Introduction: How to Make a Capacitor

Picture of How to Make a Capacitor

In this instructable I tell you how to make a capacitor your own. This is very easy to make. However it can use with 230v

Step 1:

Picture of
You need
  1. Aluminum foil
  2. A4 sheet
  3. glue
  4. paper cutter
  5. tape

Step 2:

Picture of

First cut 2 small strip of aluminum foil (about 2 x 15 cm )

Now get the A4 sheet and cut tow small strips (about 2.5 cm x 15 cm)

next, fall aluminum strip like in the picture

Step 3:

Picture of

now past them

  1. paper
  2. aluminum
  3. paper
  4. aluminum

Now, roll it and past a tape.


MarPok made it! (author)2015-09-20

I made it. I tried use a tape instead of a paper. My capacitor has C = 2.6 nF. After pressing the capacitor with my fingers, capacity is changing. Maybe after some experiments i will build a pressure sensor. Maybe.

For computing the capacity you can see formula e.g. here:

namindu (author)MarPok2017-05-02

thank you for information.

0010000 (author)2015-09-20

could you please create a video about it

namindu (author)00100002017-05-02

sorry for late response. I'll make. But I think I'm too late.

lite12 (author)2015-10-03

i want the formula of motor starting capacitors like 80-110 uf and 138-182 uf and 200-250 uf and 250-300 uf and 300-400 uf and 400-450 uf and 450-500 uf....plz

JasonP155 (author)lite122016-06-12

You will need to either buy or salvage. You cannot build caps like that yourself. If you did, it would need to be about the size of an oil drum.

BobV8 made it! (author)2015-09-16

Built it using your dimensions (2 cm x 15 cm, folded foil about 13 cm long). My Fluke read around 7.68 uF, but I really don't know how accurate that is. It was only like 200k Ohms across it. None of the readings were very stable. I tried to blink a LED with a 555 timer but it didn't work.

Nabiel (author)2015-09-16

Cool! But Needs more explanation please. Put it to use to we can see how it can be handy

0010000 (author)2015-09-15

how does it work

russ_hensel (author)2015-09-13

What is the capacitance?

Einaronr (author)russ_hensel2015-09-14

depends on the size of it

russ_hensel (author)Einaronr2015-09-15

Ok so what is your largest cap. so far? What was the size of it?

nqtronix (author)Einaronr2015-09-15

So, what is the capacitance of 1cm³ on avarage?

DIY Hacks and How Tos (author)2015-09-12

Nice DIY capacitor


About This Instructable



Bio: I'm Namindu. I like to make thing and also chemistry experiments. Instagram @namindu_ranathunga
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