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You better believe it, otherwise you're in for a surprise. A capacitor is a current storage device, and even when fed by a small charge from a (say) kV supply, it will eventually acquire the full capacitance charge at the charging voltage.

The charge is stored as a distortion of the insulating material, and when it discharges, if into a low-resistance circuit, the current will be high.

And with high voltage capacitors, there may be a small hysteresis of the dielectric, and this will relax back to a zero stress position only slowly.

So you should discharge an HV capacitor several times, waiting a few seconds between discharges.

This is a mistake many technicians make, but generally only the once!

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What are the key characteristics and applications of a cylindrical capacitor?

A cylindrical capacitor is a type of capacitor that consists of two cylindrical conductors separated by a dielectric material. The key characteristics of a cylindrical capacitor include its capacitance, which is determined by the size and spacing of the conductors, and its ability to store and release electrical energy. Cylindrical capacitors are commonly used in applications where space is limited, such as in electronic devices and power supplies. They are also used in high-voltage applications, such as in medical equipment and industrial machinery, due to their ability to withstand high voltages.


Why are high tension electricity wires called that?

High tension electricity wires are called that because they carry electricity at very high voltages, typically ranging from 69,000 to 765,000 volts. These high voltages allow the electricity to be transmitted over long distances with minimal power loss.


What is the definition of a Teflon capacitor?

A Teflon capacitor is a type of capacitor that uses Teflon (polytetrafluoroethylene) as the dielectric material. Teflon is known for its high dielectric strength, stability, and low electrical loss properties, making it suitable for high frequency and precision applications in electronics. Teflon capacitors are often used in environments where temperature and stability are critical factors.


Can dc current pass through capacitor which is in series connection?

No, unless its Voltage rating is exceeded (if it fails, a capacitor acts like a short). In a series connection, only alternating current (AC) can pass, because it will allow the capacitor to discharge sometime. DC will only charge it, as it will not flow the other way.This behavior is useful, actually, when there is need to double the voltage in a circuit. Using transistors, a capacitor is charged, and then discharged into a bigger one (while simultaneously also charging the bigger one with the negative phase of AC, for example). Connect a few steps like this into a "ladder", connect the ladder to a transistor and a transformer, add a few diodes to prevent backflow, and you have yourself a flyback transformer - a device used to generate the high voltages needed to light up a TV picture tube.


Why are power lines high voltage and what are the advantages of transmitting electricity at high voltages?

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