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'Polarity of electronic capacitor when using both p'
2005\12\23@085743 by olin piclist

face picon face
Bill Kuncicky wrote:
> Only thing is, I have read some postings recently where tantalum
> capacitors were exploding because of the wrong polarity, and I am
> feeling a little bit insecure in what I am doing.  :-(

Good.  That will keep you on your toes.  Never forget that this stuff can be
dangerous if abused.

> I have an operational amplifier (op amp) breadboarded up, with +12 volts
> and -12 volts.  Each leg of the voltage has a 10 microfarad electrolytic
> capacitor going to ground.  On the +12 volts side, I have the minus side
> of the capacitor going toward ground.  On the -12 volts side, I have the
> plus side of the capacitor going to ground, since ground in this case is
> more positive than the -12 volts.

This is correct, assuming the capacitors are rated for at least 12V,
preferably a bit more.


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