How to make a simple capacitor in home easily?


2 Answers

Oddman Profile
Oddman answered
A simple capacitor of low capacitance value can be made a number of different ways. One with a fairly low working voltage can be made by sandwiching a piece of waxed paper between two sheets of tinfoil. Of course, the tinfoil on either side of the paper dielectric must not touch that on the other side. If you put additional waxed paper on either side to insulate it, you can roll it up.

You can also sandwich foil or metal sheets between plates of glass. This will give a higher working voltage, depending on the methods of connection to the plates, and the manner of insulating the edges.

One interesting way to make a capacitor--though it tends to be a bit leaky (low Q)--is to fill an area on opposite sides of a piece of paper with pencil marks. That is, you heavily color the area with black carbon pencil, forming a conductive area. You can color a connection point out to the edge of the paper and make contact using a paper clip.

A capacitor is essential to the operation of certain high-voltage apparatus such as a Tesla coil. Any description of the construction of one of those will also show the construction of the associated capacitor. (These can be very dangerous, so observe appropriate safety precautions.)

Making high-value capacitors generally involves dielectric material that will usually not be found at home. Making capacitors that withstand high voltage and/or rapid discharge requires appropriate appreciation of the laws of physics regarding voltage and current. A good capacitor can store a dangerous charge for a long time. Be safe.
Chips Ters Profile
Chips Ters answered

Hello. I would like to show how a Leiden bank or the simplest capacitor is made.

But first, a little information for those who do not know what it is, but those who are in the know can skip or read in order to refresh their memory.

The Leiden Bank is the first electrical capacitor invented by the Dutch scientist Peter Van Muschenbrook and his student Kuehneus in 1745 in Leiden. In parallel and independently of them, a similar device called the ""medical bank"" was invented by the German scientist Ewald Jurgen von Kleist.

This old device can accumulate static electricity, which attracted me.

It consists of a container (jar) wrapped in foil on the outside and an inner one glued with the same foil two-thirds of the height, they will be the plates of our capacitor, and the capacitance (by the way, it should not allow electricity to pass through, so I installed a high voltage resistor) will be a dielectric between them.

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