capacitors question

[Ed Richards]

Kevin;

It depends on the circuit and how much more capacity you use. For
electrolytic caps it usually doesn't make much difference to go twice the
value. A lot of electrolytics have a tolerance like -20%, +80%; so you
never know what you really have. On the other hand; if it is a timing
circuit (VOX delay, etc.) it is more critical. Also, too large of a
filter capacitor can increase the inrush current and damage the
rectifiers. Coupling caps are sometimes chosen to provide a certain
frequency response or filter shaping. Bypass caps are sometimes chosen to
resonate with the circuit inductance to make a trap for some frequency.

As a rule of thumb, the answer to your question is NO. If you want the
circuit to perform the way the designer intended it to, stick with the
prescribed values. Good luck.

Ed Richards

On Thu, 15 Jun 2000 11:20:41 -0400 kevin smith <kev-0 at WEBTV.NET> writes:
> if i have the right voltage on a cap, can i use a higher mfd,or will
> mess it all up.--kevin
>
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