Re: what kind of capacitor do I need? (preamp circuit)
- From: Lostgallifreyan <no-one@xxxxxxxxxxx>
- Date: Wed, 25 Jul 2007 21:09:40 GMT
Mad Scientist Jr <usenet_daughter@xxxxxxxxx> wrote in
news:1185395236.694218.296830@xxxxxxxxxxxxxxxxxxxxxxxxxxxx:
If you just want to power your circuit with a 9V battery,
would components rated for 100V drain the battery more than you would
like,
or otherwise be overkill?
No overkill. :) Small ceramic capacitors usually have a high(ish) working
voltage. The ability to take 100V will also make sure that any leakage at
9V is low, not high, so that makes them ideal on low-volt circuits.
The epoxy coating is impermeable to moisture, and withstands a lot of heat
too, so unless there is some quality you specifically need from another
type, those small epoxy coated ones are a good first choice. Maybe if
you're making mass-produces stuff they aren't the cheapest for general use,
but in small scale work it's worth buying them, they don't cost a lot.
.
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