Technology
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Harmonics in power systems
Harmonics are sinusoidal waves that are integral multiples of the fundamental frequency 50/60 Hz waveform, depending upon different country norms (e.g. 1st harmonic or fundamental = 50 Hz; 3rd harmonic = 150 Hz, 5th harmonic…
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Switching of capacitors
Capacitor banks and systems are designed with switching mechanisms to connect and disconnect them from the system as needed, often several times a day. Switching a capacitor bank is different from switching a normal load.…
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Power factor correction capacitors
Most system loads in electric utilities, right from generation equipment, up to the final consumer systems, are inductive in nature. They load the system with a highly lagging current component. The result is a low…
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Metallized films
Use of metallized films has virtually taken over most capacitor applications in the past few decades. The advantages offered by metallized films have proved to be of immense value in major areas by way of…
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POLYPROPYLENE AND POLYESTER FILM
Plastic film capacitors are mostly used in high-performance applications. Polycarbonate, polyester and polypropylene have been the ‘big three’ of film capacitors. Most capacitor manufacturers have been using these all along, although use of polyethylene naphthalate…
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Properties of dielectrics
Dielectrics are materials that define most of the parameters of capacitors, such as capacitance, loss factor, voltage capacities etc. All dielectrics are insulators. An insulator used between plates or electrodes of capacitor as a supporter…
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Introduction to Capacitors
The capacitor is one of the three basic passive circuit components of any electronic or electrical circuit. Resistance in a circuit gives rise to oh-mic or watt losses, and its current is in phase with…
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Variable Capacitor
A variable capacitor allows adjustment of capacitance in much the same way that a potentiometer allows adjustment of resistance. Large variable capacitors were developed primarily to tune radio receivers, in which they were known as…
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Capacitor: The core energy storage component of modern electronic devices
A capacitor connected across a DC power source will accumulate a charge, which then persists after the source is disconnected. In this way, the capacitor stores(and can then discharge)energy like a small rechargeable battery. The…
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Discover the benefits of aluminum electrolytic capacitors
Aluminium electrolytics do not have competition from tantalum or other capacitors in highervoltages as other electrolytics are essentially for low voltage applications. Even in low voltage,they have the advantage of lower cost per unit. There…