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Just rolled my own capacitor

Started by culturejam, September 11, 2012, 10:43:12 PM

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jkokura

Can you make your own transistor CJ?

Jacob
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culturejam

#16
Quote from: pickdropper on September 12, 2012, 01:37:28 AM
So do you measure the tolerance as a percentage of capacitance or in thickness?

I don't think tolerance is something that is measured as a property of the cap. I think what happens is that the manufacturer cranks out 100k caps and shoots for a target of, say, 100n. Then they measure them, and the ones that fall close to the target are labelled 5%, the ones that fall further out are labelled 10%, etc.

I didn't have a target capacitance, so tolerance doesn't really apply.


Quote from: jkokura on September 12, 2012, 01:39:38 AM
Can you make your own transistor CJ?

http://sparkbangbuzz.com/cds-fet/cds-fet.htm

I don't think it would be all that practical (even less so than these silly things I'm making).
Partner and Product Developer at Function f(x).
My Personal Site with Effects Projects

pickdropper

Quote from: culturejam on September 12, 2012, 01:47:49 AM
Quote from: pickdropper on September 12, 2012, 01:37:28 AM
So do you measure the tolerance as a percentage of capacitance or in thickness?

I don't think tolerance is something that is measured as a property of the cap. I think what happens is that the manufacturer cranks out 100k caps and shoots for a target of, say, 100n. Then they measure them, and the ones that fall close to the target are labelled 5%, the ones that fall further out are labelled 10%, etc.

I didn't have a target capacitance, so tolerance doesn't really apply.


Yep, the time honored practice of "binning."

I was just joking about tolerance.  Obviously it doesn't really apply to homemade caps.
Function f(x)
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Om_Audio

I double dare you!!
C

Quote from: jkokura on September 12, 2012, 12:13:24 AM
You crazy son of a gun!

Do a true DIY Fuzz Face CJ, I dare you...

Jacob
Sent via soup cans and string.

angrykoko

That is way cool!!

How did you figure it out?
The early bird may get the worm, but the second mouse gets the cheese in the trap.

culturejam

Quote from: angrykoko on September 12, 2012, 12:31:25 PM
That is way cool!!

How did you figure it out?

I saw a youtube video where somebody shows how to make one with plastic food wrap and aluminum foil. I figured packing tape would be sturdier and easier to work with.
Partner and Product Developer at Function f(x).
My Personal Site with Effects Projects

DutchMF

Missed this because of being on holiday, cool as h#ll! 

Quote from: alanp on September 11, 2012, 11:52:18 PM
That is cool. I made a capacitor out of a plastic bucket, 600mL glass bottles, salt water, and oil, once, but nothing as flash as that!

I dare you to use this in a pedal!  ;)
"If you can't stand the heat, stay away from the soldering iron!"