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Excess Physical Gold Investment

Jumat, 16 November 2012
Posted by Unknown
Excess Physical Gold Investment

Gold investment now comes in various forms and packaging, but you must make sure that investing in physical gold (bullion / coins) have a lot more benefits than investing in gold in other forms.

Here are 6 reasons and advantages that you consider worthy to prefer to invest in physical gold:

    1. Protecting Wealth (Wealth Preservation)
       Gold 'preserve' our worth. The increase in the value of gold compared to the dollars each year is always much higher than the rise in inflation. This makes the value of our wealth management, is not consumed by the evils of inflation.
    2. Risk Low To Medium (Medium to Low Risk Investment)
       Gold is an investment with low to medium risk tends to increase in yields high enough value on a certain period of time.
    3. Real Assets (Tangible Assets)
       Gold bullion / coin investment is 'real', really have intrinsic value, not a piece of paper that has a declared value of the collateral would hope.
    4. Property Rights (Private Property Rights)
       Gold bars / coins you have is your private property completely. Character gold bars / coins made ​​of real independent, not dependent on a particular institution. You can do anything against your gold.
    5. Easy Disbursed (Liquid Asset)
       Gold is the most easily traded assets any place and time, independent institution. In fact you can make gold as collateral debt (mortgage), other investments may very rarely did so.
    6. Tax Exempt (Tax Free)
       In Indonesia, gold included as commodity production that is not subject to tax. So if you invest in gold bullion, then you have invested in tax-exempt assets.

Coffee Benefits and Dangers

Posted by Unknown
Coffee is one of the types of drinks that can be enjoyed by all people. Both the top and the bottom. Once famous for its coffee only black coffee, but now no longer so. The coffee was much mixed with an assortment of flavors, such as milk, chocolate, and more. His name was from the start a cappucino, coffelatte, or moccacino are seen at a cafe or restaurant branded "coffee".Even the coffee trap has become a "prestige" for the community. There is a special restaurant or cafe that sells coffee drinks at exorbitant prices. Many people now go out just for coffee and chat with relatives.I really liked the coffee, not just for the prestige, but I really liked this one kind of drink. As a student, of course, the usefulness of coffee for me is a friend to stay up for the sake of doing the coursework. Not for prestigeThis time I will discuss about the benefits and dangers of coffee.During this time there are many who think about the harmful effects of coffee consumption. But actually, if taken properly (not excessive) coffee has some benefits for preventing diseases that attack our bodies.Regarding the benefits of the coffee itself was already reflected in its name, "coffee" is taken from the Arabic word "qahwah" which means "strength". The word was later changed qahwah in different languages ​​are "kahveh" (Turkey) - "koffie" (Netherlands) - "coffee" (Indonesia).Based on the results of research conducted by the Harvard Women's Health, the benefits of drinking coffee a few cups a day can prevent us from type 2 diabetes, colon cancer, Parkinson's, kidney stones, to cirrhosis / damaged liver function, and prevent us from declining cognitive brain.Meanwhile, according to the results of 20 studies conducted by various researchers around the world to explain the benefits of coffee can actually keep us from the attacks of type 2 diabetes by 50%. Chlorogenic acid content and substance trigonelin (pro-vitamin B3) which is found in coffee may inhibit the absorption of sugar, stimulating the formation of the hormone insulin and GLP-1.Some of the benefits of coffee for health are as follows:

    
* To avoid heart attacks and strokes. Coffee has a content that can keep us from heart attack to stroke. This has been demonstrated in a study involving more than 83,000 women aged 24 years or more. They drank 2-3 cups of coffee / day. The results showed that these women had a 19% lower risk than non-coffee drinkers. It also carried out on some Finnish men. And the results obtained are also relatively common.
    
* To avoid attack cancer. The benefits of coffee is known from a variety of research done consistently by researchers. The results showed that liver cancer, colon cancer, breast cancer could be prevented by the consumption of coffee.
    
* To prevent cirrhosis.
    
* To avoid Parkinson's disease.UNFORTUNATELY, coffee drinking often led to the effect of "addiction" both psychologically and physiologically. Common characteristics such as coffee addiction fatigue or tired, listless and sleepy that day just did not drink coffee. Reasonable is consuming as much as 85-200 mg coffee or 1-3 cups of coffee. However, drinking coffee above 250 mg once can cause health problems, such as heart palpitations, anxiety, insomnia (trouble sleeping), nervous tremors (shaking hands), and even nausea to vomiting.Coffee drinking is also harmful to the suffering of hypertension (high blood pressure) because the compound caffeine can cause blood pressure to rise sharply. In addition, coffee can also increase blood flow to the kidneys caused by urine production increases. So, do not be surprised if soon after consuming coffee fast bladder is full.Drinking too much coffee can also reduce fertility, especially when combined with alcohol. For women the age of menopause, drinking coffee in large quantities can increase the risk of kekeroposan bones (osteoporosis).Similarly, researchers report from the Harvard School of Public Health, as noted Balch and Stengler in Prescription for Natural Cures. While leaving a question mark Happenings case, they found that women who consume 5-7 grams of caffeine per month (the equivalent of two cups of coffee per day) had twice as likely than those not exposed endrometriosis caffeine.The problem impacts rude or filtered coffee iini studied by a number of researchers in the Netherlands. They observed high levels of homocysteine ​​in the blood of a coffee addict. Homocysteine ​​is a substance that is formed when the body remove proteins. Though closely associated with homocysteine ​​increased the risk of heart disease.Although it was not clear exactly how the essential amino acids interfere with the heart, it is evident that these zazt often cause injuries in various layers of the arteries and then into a fatty acid and calcium buildup. This could lead to a shift embankment walls of the arteries (arteriosclerosis).On the other hand according to Dr. Elvina Naidoo, nutritionists, homocysteine ​​body needs for a variety of biochemical reactions, especially in the process of changing methionine into sistationin and was instrumental in forming propionilkoa (substance that plays a role in fat metabolism and karbbohidrat), as long as the levels are not high. Normal levels of 7-22 ug mol / L.A Dutch researcher added, two weeks after each day of drinking six cups of coffee, someone homocysteine ​​concentrations up 10% of the normal rate. Likewise, cholesterol and triglycerides. However, this increase is not permanent. When coffee is stopped and the healthy state of the body, homocysteine ​​can naturally kalebihan normal again. In addition to reducing caffeine, increased levels of homocysteine ​​can also be prevented by reducing consumption of animal protein which contains methionine.When the day drinking coffee 1.360 g crude (about 6-7 cups), estimated the risk for heart attack or stroke increased by 10%. Besides vitamin b6 can be reduced to 21%.On that basis it is better not drink coffee, especially for those at high risk of heart disease. If one must drink coffee, for we should only 1-3 cups a day (the European standard for 3-5 cups). It was not at bedtime. Coffee can be replaced by a glass of orange juice, green vegetables, along with vitamin B6 and B12 types of foods and beverages do not contain zinc and caffeine but high in minerals, vitamins and folic acid. Whereas vitamin B6, B12 and folic acid plays an important role in lowering levels of homocysteine ​​in the body, so that coronary heart disease could be avoided.

Honey Benefits

Kamis, 15 November 2012
Posted by Unknown
Activity collecting honey is said to have been held since 10,000 years ago. Proof of this is the opinion containing findings of an image on a wall in a cave in Valencia, Spain. The figure shows two men using a ladder made from a type of wild grass was reaching for a beehive containing honey. At first, people are more use honey as food. Then, no longer limited to the use of honey as a sweetener consumption only.
Here Honey Benefits
1. Honey for energy sources
In the past, the ancient Greek and Roman athletes drink honey before and after competing as a remedy for stamina and energy recovery. For centuries, honey has been known as a fuel athletes because honey contains sugar is rapidly absorbed by the digestive system so honey is a source of instant energy. Until now, the sports world and the honey given before the game instead of carbohydrates used during exercise.
2. Honey effective as glucose
Their report, issued a medical journal says the levels of glycemic index (GI measure to quantify the negative impact of food on blood sugar) is low on honey slows the absorption of sugar in the blood so that more healthy digestive system and ensure the availability of carbohydrates during exercise. Meanwhile, Nutrition Laboratory at the University stated that honey is as effective Mempish glucose carbohydrate replacement during heating.
3. Honey for wound healer
In the world of medicine the Greeks and Romans pioneered the use of honey to treat nasal congestion while the ancient Egyptian nation to pioneer the use of honey to treat wounds. They make an ointment of honey to treat burns and puncture wounds caused by sharp objects.
4. Honey as an antibiotic
After thousands of years of use, the efficacy of honey as a wound revealed in scientific medicine. Honey works as a natural antibiotic sangggup defeat deadly bacteria. Honey is very acidic so it is not suitable for the growth and proliferation of bacteria. Honey produces hydrogen peroxide which is an incredible anti-septic. The process of osmosis to eradicate bacteria in honey viscosity of honey contains little water osmosis permeate water produced from bacteria in wounds and burns, and is like a sponge absorbs water. Honey dried bacteria so the bacteria difficult to grow.
5. Honey to kill germs
Extraordinary nutrient content such as free amino acids in honey can help cure the disease. Honey contains antibiotic substances that are useful for defeating pathogens causing infections panyakit. Following the ancient Egyptian nation after a study to discover the scientific facts, honey ointment for wounds are now in production in Australia.
6. Honey for the Treatment
Bangsaa Egypt known as the most skilled of the drug mix natural ingredients. Honey is included in 500 of the 900 prescription prescription drugs that are known. Modern medicine refers to the therapeutic use of honey from ancient Egypt are satisfied with the results.
7. Honey to Treat ulcers
Hospital University of Wisconsin Medical School and Public Health, for example, apply honey therapy for ulcers suffered by diabetics. The trial of a 79-year-old patient successfully heal finger ulcers on his feet. The patient does not even amputated due to the honey treatment.
8. Honey for Antioxidants
In New Zealand, honey therapy cured patients scars on your back for too long lying in a hospital bed. In the United Arab Emirates, honey therapy for injuries caused by herpes and genital lips penyambuhan accelerate and reduce pain. Meanwhile, to prove the role of honey as an antioxidant researcher at the University of California proved consumption of honey can increase antioxidants in the blood. Tests in mice to assess the ability of honey increases calcium absorption gives satisfactory results. Research at Purdue University that concluded that calcium supplements with honey can increase calcium absorption by the body.
9. Honey for Ageless
Why did the British Empire Empress and Queen Elizabeth longevity? Be believed, honey plays a major role in maintaining the health thus making both of them lived. For the British royal family, honey breakfast is a habit every day they put on a high-quality honey on the bread. The natural sweetness of honey used in England until the mid-17th century. These habits had changed when sugar is considered more classy start production. But after the widespread use of sugar is no longer limited to the upper class, the royal family back honey. That's why their health maintained.

Often Due to Risk Begadang For Women

Posted by Unknown
Risk often stay up, stay up for women due to the risk due to staying up and causing trouble having children.
Irregular sleep patterns will not only increase the risk of chronic diseases, but also affect fertility. Women often stay up all night, for example, tend to be more difficult than if the child had always been irregular sleep patterns.

This assumption is based on the theory that living things, especially mammals and plants have a biological clock called the circadian cycle. This cycle regulating various functions of organs in the body, including the reproductive system.

When a person is often rare sleep disorder cycle. One of the effects that can be observed in women are menstrual cycles become irregular, which means it also affects their fertility.

To prove this theory, researchers from Northwestern University and then did an experiment in female rats. Once in buahi males, 18 rats were placed in a cage lamp is always lit and 18 others in a dark cage.

In the next few days, only 50 percent of the first group of mice that gave birth to the child while the rats in the second group only 20 percent instead. The difference looks quite striking in comparison to the control group, the birth rate reached 90 percent.

"I think the idea is very interesting in this study is that the biological clock in the ovary plays an important role in the process of pregnancy," said Keith Summa, who led the study, as quoted from Dailymail

However not all experts agree with the results of this study, including Dr. Neil Goodman, an expert in endocrinology from Boston. Although proven in mice, he doubted that the same applies to humans because he thinks most test animals have similarities with the human reproductive system is not rats but apes.

The relationship between sleep patterns in particular the reproductive system of women actually have ever been meticulously before. One of them proves that nurses are often included in the night are likely to have irregular menstrual cycles.

How to Maintain a Healthy School Environment

Posted by Unknown
School is one of the formal educational institutions that serve to enhance the knowledge and abilities, ekolah is where we get a variety of science as a basis for survival in the future. Pemahan and the introduction of the environment can be obtained menditail children through education in schools.
The way - the way it needs to do to maintain a school environment are as follows.

   
1. Develop and promote green schools perogram.
   
2. Sign Up or invest and implement green schools perogram, yaiut;

        
* Build a living pharmacy activities at school.
        
* Menurangi or conserve lamp cooling classrooms, water and energy consumption.
        
* Establish mechanisms garbage in school.
        
* Allowing for efficient activity or even recycle all paper, plastic and the like
        
* Provide trash bins by type.
        
* Extra-curricular activities to condition-based environments, such as the green, nature lovers and the like.
        
* Conducting discussions or case studies of the school maintenance and the like. Sample mennton environmentally-themed films and then discuss or discuss it together
        
* Conducting field trips or study in order bnding maintenance and improvement of hygiene and preservation laingkungan school

   
1. Carry out the order and cleanliness of the school environment.
   
2. Students develop a love and concern for the environment through a variety of grasping caring school environment, such as inter-class cleanliness competitions, writing, drawing, or a variety of other creativity that are environmentally friendly.
   
3. Conducting surveillance and enforcement of discipline.
   
4. Maneuver love the cleanliness and health of the school environment
   
5. take advantage of the great days of national environmental care movement
Overall, the cleanliness and beauty of the school is the responsibility of every citizen of the school. In addition to teachers and students, maintenance and manifestation bersihm school environment healthy and beautiful is not separated from the role of parents, private sector NGOs mapupun government. Such conditions will bear smart student, grade, environmentally friendly and able to apply an attitude of love and caring environment in the school and Community Sector.
Also read the article here:

    
* Understanding Causes Pollution & Elements
      
Pollution is the environmental pollution resulting decline in environmental quality and health and peace of life terganggunnya hiup creatures including humans. The occurrence of pollution ...
    
* 5 Things Covered in EIA Studies
      
To avoid damage to the environment caused by the exploitation of resources in the process of sustainable development, the development of the system implemented based on an analysis of the impact of ...
    
* Differences Polluted Air and Water is Contaminated
      
Water is an indispensable element of life living creatures on this earth especially for human life, plants and animals. It is therefore important for us to know the difference between ...
    
* 6 Rules for Caring for Animals
      
In order to preserve the animals, especially animals that are endangered or rare, hunting or catching animals must follow and obey the following rules. The hunters had to ...
    
* Causes of Air Pollution
      
The air in the environment contaminated by pollutants that are not clean anymore and is impaired for living things / people around. With the advancement of technology today, air pollution have ...
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understanding CAPACITORS

Rabu, 14 November 2012
Posted by Unknown
Understanding CAPACITORSElectronics components this time we will discuss is kapasitor.Selain capacitor's name was condensator.Komponen like resistors are also included in the group of passive components, the type of components that work without the need for bias current.The types of capacitors are various, such as below.* According to the Polarity- Capacitors PolarPolarity (+) and (-).Polarity in the installation must be considered and should not be installed upside down. In a sign bodynya polarity to the polarity mark foot (+) or (-).- Non Polar Capacitor (Capacitor Bipolar)This capacitor type can be mounted back and forth.* According to the Material PembuatannyaThe capacitor is basically two pieces of metal plate (dielectric) separated by a material Isulator. Well, here's the clincher material Isulator capacitor name.According to the materials of manufacture jenis2 capacitor is:- Electrolytic Capacitors → isulatornya made from electrolytic- Capacitors Mika → isulatornya material made from mica- Capacitors Air → isulatornya material made from the air.- Paper capacitors, tantalum, mylar, etc..* According to the assessment value is- Capacitors Fixed / PermanentCapacity value can not be changed.- Variable Capacitors sometimes called VC or Varco (variable capacitor)Capacitors of this type we can change the value to change.The function of a capacitor is to store the current / voltage. For current DC capacitors serve as Isulator / retaining an electrical current, while AC current function as a conductor / passing an electric current.In application is used as a filter capacitor / filter, rectifier voltage DC to AC to DC converters, ac wave generator or oscillator etc..Capacitor value can be seen in the writings found on her body, for example, 10 uF/16 V means that the capacitor value is 10 micro Farad and can operate at maximum voltage of 16 V, if it exceeds 16 V, the capacitor will experience 'break down' aka ko'it :-).Farad is the unit value of the capacity of the capacitor.1 uF → 1 micro Farad = 1 x 10 ^ (-6) = 0.000001 Farad Farad1 nF → 1 nano farad = 1 x 10 ^ (-9) Farad1 pF pico Farad → 1 = 1 x 10 ^ (-12) Farad# Code Number In CapacitorsFor capacitors rated capacity below 1 uF capacity value normally written in code numbers.Example:1. 104 → 10 x 10 ^ 4 (in units of pico Farad) = 100000 pF or 100 nF or 0.1 uF2. 222 → 22 x 10 to the power 2 (pF) = 2200 pF or 2.2 nF* How are we rewrite the first two numbers, then we multiply by 10 to the last digit.3. 4N7 → 4.7 nano farad4. 2P5 → 2.5 pico faradCapacitors are uF value below 1 is generally non-polar type, except for the type of electrolyte.IniDalam image below schematics capacitor is a capacitor electronics symbols are as under iniYang no sign (+) and (-) is a symbol of the non-polar capacitor while the (+) and (-) is a non-polar capacitor symbol.CAPACITOR (Condenser)Capacitors (capacitors) that the electronic circuit is denoted with the letter "C" is a device that can store energy / electric charge in an electric field, by collecting internal imbalance of electric charge. Capacitors discovered by Michael Faraday (1791-1867). Unit called the Farad capacitor (F). One farad = 9 x 1011 cm2, which means the surface area of ​​the strip.The structure of a capacitor is made of two pieces of metal plates separated by a dielectric material. Dielectric materials are commonly known as air vacuum, ceramics, glass and others. If both ends of the metal plate was given voltage, the positive charges will accumulate on one leg (electrode) metal and at the same time the negative charges accumulated on the other end of the metal. The positive charge can not flow toward the negative pole and the opposite end of the negative charge can not go to the end of the positive pole, being separated by a dielectric material that is non-conductive. Electric charge is stored for no conduction at the ends of the legs. In the wild, these capacitors phenomenon occurs when the accumulation of positive charges and negative in the cloud.1.1. CapacitanceCapacitance is defined as the ability of a capacitor to hold the charge of electrons. Coulombs in the 18th century calculate that 1 coulomb = 6.25 x 1018 electrons. Then Michael Faraday made postulate that a capacitor will have a capacitance of 1 farad when a voltage of 1 volt can contain as much as 1 coulombs electron charge. With the formula can be written:Q = C VQ = the electron charge in C (coulombs)C = capacitance in F (farad)V = the voltage in V (volts)In practice the manufacture of capacitors, capacitance is calculated by knowing the area of ​​the metal plate (A), distance (t) between the two metal plates (dielectric thickness) and constant (k) dielectric materials. With the formula can be written as follows:C = (8.85 x 10-12) (k A / t)Here is a sample table constants (k) of some dielectric materials is simplified.For practical electronic circuits, unit farad is a very large one. Generally capacitors on the market has units: μF, nF and pF.1 Farad = 1,000,000 μF (micro Farad)1 μF = 1,000,000 pF (pico Farad)1 μF = 1.000 nF (nano Farad)1 nF = 1000 pF (pico Farad)1 pF = 1.000 μμF (micro-micro-Farad)1 μF = 10-6 F1 nF = 10-9 F1 pF = 10-12 FConversion unit for ease of reading is important to know the amount of a capacitor. 0.047μF example can also be read as 47nF, or another example of the same 0.1nF 100pF.Identified condenser has two legs and two poles is positive and negative and has a liquid electrolyte and usually tubular.While most of the other types of rated capacity is lower, does not have a positive or negative pole on her feet, mostly in the form of flat round brown, red, green and other such tablets or buttons often called capacitors (capacitor).2.2 The nature and kind of capacitorBased on usefulness condenser is divided into:1. Fixed capacitors (rated capacity can not be changed)2. Electrolytic Capacitor (Condenser electrolit = Elco)3. Variable capacitor (rated capacity can be changed)In a large capacitor, the capacitance value is generally written by the sheer numbers. Complete with a maximum voltage value and polarity. For example, the elco capacitor capacitance was clearly written by 100μF25v which means the capacitor / capacitor has a capacitance of 100 μF value by the maximum allowable working voltage of 25 volts.Capacitors are small physical size is usually only read 2 (two) or 3 (three) numbers only. If there are only two numbers, unit is pF (pico farads). For example, a capacitor that reads two numbers 47, the capacitor capacitance is 47 pF. If there are 3 digits, the first and second shows the nominal value, while the 3rd digit is the multiplier. Multiplying factor according to the nominal rate, respectively 1 = 10, 2 = 100, 3 = 1000, 4 = 10000, 5 = 100000, and so on.Example:For polyester capacitors capacitance value can be known by the color as in the resistor.Example:As with other components, there is a large nominal capacitance tolerance. In Table 2.3 are shown the value of tolerance with codes specific numbers or letters. In the table the user can easily determine tolerance capacitors are usually listed accompany nominal capacitor value. For example, if a written 104 X7R, then the capacitance is 100nF with a tolerance of + / -15%. Please also note that once the recommended working temperature is between-55Co to +125 Co.From the above it can be known that the addition capacitance capacitor characteristics is equally important that the working voltage and operating temperature. The working voltage is the maximum allowable voltage that the capacitor can still work well. For example 10uF25V capacitor, the voltage that can be given should not exceed 25 volts dc. Generally, polar capacitors work on DC voltage and non-polar capacitor works on AC voltage. While working temperature limit is the temperature at which the capacitor can still work optimally. For example, if the written X7R capacitor, the capacitor has a recommended operating temperature between-55Co to +125 Co. Usually these characteristics specifications presented by the manufacturer in the datasheet.2.3. The series capacitorThe series capacitor in series will result in less total capacitance value. Below is an example of capacitors arranged in series.In a series of capacitors arranged in series applies the formula:The series capacitors in parallel will result in the greater capacitance value replacement. Below is an example of capacitors arranged in parallel.In parallel capacitor circuit applies the formula:2.4. Function CapacitorsThe function uses a capacitor in a circuit:1. As the coupling between one circuit to another circuit (the PS = Power Supply)2. As a filter in series PS3. As the frequency generator circuit antenna4. To save power the neon lights5. Eliminating bounce (stepping fire) when installed on a switch2.5. Type CapacitorsThe capacitor consists of several types, depending on the dielectric material. For more simple can be divided into 3 parts, namely electrostatic capacitors, electrolytic and electrochemical.• Electrostatic CapacitorElectrostatic capacitors are the capacitors are made with a dielectric material of ceramic, film and mica. Ceramic and mica is a popular material and cheap to make small capacitance capacitors. Quantities available from pF to several μF, usually for a series of applications relating to high frequency. Including the dielectric films are raw materials such as polyester (polyethylene terephthalate, also known as Mylar), polystyrene, Polyprophylene, polycarbonate, metalized paper and more.Mylar, MSM, MKT are some examples of the trademark name for a capacitor with a dielectric material film. Generally this group of capacitors are non-polar.• Electrolytic CapacitorsElectrolytic capacitor group consisting of capacitors dielectric materials are metal-oxide layer. Generally capacitor including this group is polar capacitor with the + and - in the body. Why are these capacitors can have a polarity, is due to the manufacturing process uses electrolysis to form the positive pole and the negative pole anode cathode.It has long been known for some metals such as tantalum, aluminum, magnesium, titanium, niobium, zirconium and zinc (zinc) surface can be oxidized to form metal-oxide layer (oxide film). Oxidation layer is formed through the process of electrolysis, as in the process of gold plating. Metal electrodes immersed in an electrolyte solution (sodium borate) and given a positive voltage (anode) and the solution given electrolit negative voltage (cathode). Oxygen in electrolyte solution apart and oxidize the surface of the metal plate. For example, if you use aluminum, it will form a layer of aluminum oxide (Al2O3) on the surface.Thus successive metal plate (anode), layer-metal-oxide and the electrolyte (cathode) form a capacitor. In this case the metal-oxide layer as a dielectric. From the formula (2) the unknown capacitance is inversely proportional to the dielectric thickness. Metal-oxide layer is very thin, and thus can be made large enough capacitance capacitors.Due to economical and practical reasons, it is generally a lot of metal materials used are aluminum and tantalum. Most materials are plentiful and cheap aluminum. To get the surface area, the material is typically rolled aluminum plate radial. So in a way that can be obtained large capacitance capacitors. For example 100uF, 470uF, 4700uF and others, which is also called a capacitor elco.Electrolyte materials in liquid tantalum capacitors there but there are also solid. Called solid electrolyte, but are not really the solution electrolit its negative electrode, but other materials are manganese-dioxide. Thus this type of capacitors can have a large capacitance, but becoming more slender and petite. In addition, because all the solid, then their work time (lifetime) to be more durable. This type of capacitor has a leakage current is very small so it is understandable why Tantalum capacitors become relatively expensive.• Electrochemical CapacitorsOne other type of capacitors are electrochemical capacitors. Including this type of capacitors and batteries is the battery. In fact, battery and capacitor batteries are very good, because it has a large capacitance and leakage current (leakage current) is very small. This type of capacitor types are also still in development for a large capacitance, but small and light, for applications such electric cars and mobile phonesCapacitors are electronic components that can store electrical charge. The structure of a capacitor is made of two pieces of metal plates separated by a dielectric material. Dielectric materials are commonly known as air vacuum, ceramics, glass and others. If both ends of the metal plate was given voltage, the positive charges will accumulate on one leg (electrode) metal and at the same time the negative charges accumulated on the other end of the metal. The positive charge can not flow toward the negative pole and the opposite end of the negative charge can not go to the end of the positive pole, being separated by a dielectric material that is non-conductive. Electrical charge is "stored" as long as no conduction at the ends of the legs. In the wild, these capacitors phenomenon occurs when the accumulation of positive charges and negative in the cloudRectifier circuit with Filter CapacitorsThe average rectifier output is DC voltage with ripple (ripple). To change this ripple to a fixed DC voltage, it takes a strainer (filter) using a capacitor as shown in figure 6Figure 6. The hand with filters CThe process of charging and discharging currents (charging and discharging) the capacitor circuit, relies heavily on the prices of Resistors and Capacitors. Voltage at kapasistor when the charging process is as follows:while the flow equations for the disposal process is as follows:where konstantat time decay, commonly known as the time constant t, ie: t = RCRole Capacitors in Electrical Energy UsageNuclear Batteries: Sources Unidirectional Flow Before DevelopedModern life one character is a large consumption of electrical energy. The amount of electrical energy or load that is used is determined by the reactance (R), inductance (L) and capasitansi (C). The amount of electrical energy consumption was due to numerous and diverse equipment (load) of electricity used. While commonly used electrical load is inductive and capacitive. Where the load is inductive (positive) reactive power required as the rectifier transformers, induction motors (AC) and fluorescent lamp, while the capacitive load (negative) issue of reactive power. Reactive power is power that is useless and so can not be converted into energy but it is necessary for the transmission of electrical energy to the load. So that led to a waste of electrical energy is the amount of equipment that is inductive. Means of using electrical energy turns customers not only burdened by the active power (kW), but also the reactive power (KVAR). The sum of the two forces that will produce real power is the power supplied by PLN. If a value is magnified power that is usually done by industry customers the power loss becomes big is the active power (kW) and voltages up to the consumer is reduced. Thus, the industry's production will decline this certainly should not be going for it from the power supply plus PLN should mean increased costs. Because the power is P = VI, then by increasing the amount of power means a decline in prices and the rising prices of V I. Thus, active power, reactive power and apparent power is an entity that would be described as a right-angled triangle in Figure 1.From Figure 1 it is obtained that the ratio of active power (kW) to apparent power (kVA) can be defined as the power factor (pf) or cos r.cos r = pf = P (kW) / S (kVA) ........ (1) P (kW) = S (kVA). cos r ................ (2)As we know that the price cos r is from 0 s / d 1. Means the best conditions, namely when the price P (kW) maximum [P (kW) = S (kVA)] or the price cos r = 1 and is also called the cos r the best. But in reality the price cos r determined by PLN as the party of power supply is at 0.8. So for the price cos r <0.8 means pf say ugly. If the customer pf bad (low) then the capacity of active power (kW) that can be used customer will be reduced. Capacity will continue to decline along with the decline pf electrical system customers. By decreasing pf it will display some of the problems as follows: a. Enlarged kWH power usage due to losses. b. The growing use of electrical power kVAR. c. Power quality to be low because of the voltage drop. Theoretically the system with a low pf course will cause the current required from a major supplier. This will lead to a total loss of power (reactive power) and voltage drop becomes large. Thus, the penalty shall be paid sebabpemakaian increased reactive power to be great. Excess fines or fees imposed if the amount of reactive power usage in a month tercata kVARH which is higher than 0.62 kWH amount in question so that pf an average of less than 0.85. While the excessive use of kVARH in dollars using the following formula: [B - 0.62 (A1 + A2)] Hk Where: B = k VARH use kWH usage WPB A1 = A2 = kWH usage LWBP Hk = price overuse kVARH To increase prices r cos (pf) is low easy thing to do is to reduce the angle so that it becomes r1 r means r> r1. Moderate to minimize the angle r is the possible is to reduce component reactive power (KVAR). Means that there are components of reactive power is inductive to be reduced and that the reduction can be done by adding a source of reactive power in the form of capacitor.The process of reduction is possible because both the load (inductor and capacitor) opposite direction as a result of reactive power to be small. When reactive power to active power remains small while the price of a big result pf apparent power (kVA) to be small so that the electricity bill is reduced. Meanwhile, another advantage with decreasing reactive power is:• Reduced power losses in the system.• An increase in voltage as the power increases.Capacitors Work ProcessCapacitors to be used to enlarge pf in parallel with the load circuit. When the series was rated voltage the electrons will flow into the capacitor. At the time of the capacitor filled with the electron charge voltage will change. Then out of the electrons will flow into the capacitor and the circuit thus the need saaat that generate reactive power capacitors. When the voltage is changed it back to normal (still) the capacitor will keep returning electrons. By the time capacitor emit electrons (Ic) means the same treaktif power supply capacitors to the load. Faucets load is inductive (+) while the reactive power is the capacitor (-) as a result of reactive power tends to be small.Power loss before replacing capacitors:Active power losses ............. = I2 R Watt (5)Reactive power loss = I2 x VAR ......... (6)Power loss after capacitor installed:Active power loss = (I2 - IC2) R Watt ... (7)Reactive power loss = (I2 - IC2) x VAR (8)Installation of CapacitorsCapacitors to be used to minimize or correct placement pf there are two ways:1. Centralized capacitors placed on:a. Primary and secondary side of the transformerb. At the central bus controller2. How limited capacitors placeda. Small Feederb. At the branch circuitc. Jump on the loadTreatment CapacitorsCapacitors are used to improve the pf so durable would have to be treated on a regular basis. In the nursing care must be taken in damp areas that are not protected from dust and dirt. Before conducting the examination confirm that the capacitor is not connected anymore to the source. Then, because it still contains the capacitor charge means that there is no current / voltage, the capacitor is shorted should be linked so that the load is lost. The type of inspection to be performed include:• Examination of leakage• Checking cables and buffer capacitor• Examination of insulator

Coulomb's law

Coulomb's lawWe already know that two similar charges attract each other and the two are not similar charges will repel. When it was junior class IX, knowledge is not enough. We also need to know how large a force of attraction and repulsion how-reject.Charles Augustin de Coulomb, found an association between electric force with the charges and the distance between the charge. This relationship is known as Coulomb's law."The magnitude of the force of attraction and repulsion is proportional to the respective charge and inversely proportional to the square of the distance of the two charges."The force of attraction or repulsion reject is called the Coulomb force or electric force.Now let's peel this carefully Coulomb's law:a. The force of attraction or repulsion is proportional to the charge of eachExample:Two charges each + Q + 2Q and separated by d electric force experienced by F. How big style if each charge to +3 Q and +4 Q?CompletionFrom the above can be made about the following diagram.clip_image001Because the magnitude of the Coulomb force F is proportional to the charge-charge, it can be writtenclip_image002Consider the following diagram.clip_image003It appears that, when charge-charge becomes greater then the Coulomb force is also greater.b. The magnitude of the Coulomb force is inversely proportional to the square of the distance the two chargesWhen two separate charges farther away, of course, the influence of the two will be smaller. More tiny, but it is not simply inversely proportional to the square distance of both.Example:Two charges each + QC + QC and separated by d Coulomb force experienced by F. How repulsive force-resist, when charge-charge distance to 2d?clip_image004CompletionThe magnitude of the Coulomb force is inversely proportional to the square of the distance of the two charges, so that the force Couomb F 'it becomes:The following diagram clip_image006Perhatikanclip_image007
So, when the distance of the two charges to be 2 times larger, the style Coulombnya ¼ times the force of the original, when the distance to 3 times, then the force Coulombnya to 1/9 times its original style and so on.Exercise:1. Two charges each + 2Q and 3Q + d separated by an electric force experienced by F. If the load each into +6 +4 Q and Q,a. Draw a diagram?b. How Coulombnya style now?2. Two charges each + QC + QC and separated by d Coulomb force experienced by F. When the distance between the two cargo into ½ d,a. Draw a diagram?b. How Coulombnya style now?Coulomb's law formulaFrom the sound of Coulomb's law, which is "the force of attraction and repulsion is proportional to the respective charge and inversely proportional to the square of the distance of the two charges", it can be formulated:clip_image009F = magnitude of the Coulomb force (N)Q1, 2 = charge of 1 and 2 (C)r = distance between the two charges (m)k = 9109 N m2/C2Example:Two charges each 2μ + 3μ + C and C, separated by 2 cm. If k = 9109 N m2/C2, how much repulsion-reject?CompletionGiven:k == 9109 N m2/C2Q1 = 2μ + C = 2106 CQ2 = 3μ + C = 3106 Cr = 2 cm = 2.10-2 mAsked: F?Answer:clip_image011= Clip_image013= Clip_image015= 13.5. 109-6-6 - (-4)= 13.5. 101= 135 N
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