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Capacitor goes BOOM! What went wrong ?
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ThermallyFrigid:
So,
I built a circuit from a schematic that is a battery deSulfator (or claims to be)
I realize most likely it does nothing....but I built it anyway as an experiment.

So after connecting the battery to be desulfated to the output end, I connected 12.9v to the input end.

For about 12 seconds all seemed well.....them a startlingly loud pop as the circuit's 100uF 25v capacitor blew itself apart.
I'm wondering if someone can look at this schematic and tell me what is wrong?
Thanks


Here is the circuit Schematic


jpanhalt:
What type of capacitor?  Was it installed with proper polarity?
ThermallyFrigid:
Hello,
It was a 100uF 25v Electrolytic capacitor and I'm nearly certain it was installed correctly.
rsjsouza:
The remnants (black side to the positive) seem to indicate the capacitor was installed in the correct polarity.
My suspicion is that the capacitor was already faulty - either it went through excessive stress during soldering or was already defective. 
bdunham7:
That's exactly what would happen if the capacitor was installed in reverse polarity.  I can't see enough remnants to know either way.  Don't overlook the possibility that the silkscreen is wrong--it's happened before.  Verify that there is continuity between the negative side of the capacitor and GND.  Then try again with a new one.
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