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Author Topic: Capacitor conducting DC?  (Read 1581 times)

flester

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Capacitor conducting DC?
« on: December 14, 2017, 09:24:10 AM »
Just troubleshooting an LM386 amp build on veroboard very similar to the Ruby Amp on runoffgroove.com. (it worked on breadboard!) when i do a continuity test one of the capacitors seems to conduct. Is this normal or does it indicate a bad capacitor? Its 100uF electrolytic.

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Jazz P Bass

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Re: Capacitor conducting DC?
« Reply #1 on: December 14, 2017, 10:56:20 AM »
The only 100uf cap on the drawing is for the battery.

What problem are you troubleshooting?


Katoda

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Re: Capacitor conducting DC?
« Reply #2 on: December 14, 2017, 12:03:10 PM »
When tested with an ohm meter, every capacitor will conduct for a short period of time, depending on the RC charge time. R being the internal resistance of the ohm meter. If it conducts continuously, the cap went bad.

flester

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Re: Capacitor conducting DC?
« Reply #3 on: December 14, 2017, 04:49:42 PM »
When tested with an ohm meter, every capacitor will conduct for a short period of time, depending on the RC charge time. R being the internal resistance of the ohm meter. If it conducts continuously, the cap went bad.
Thanks all. I just had no output or even a click when powered up. To be honest it ended up a mess with broken copper strips etc as I'm new at this. Just going to start again and use 8 pin socket instead of soldering chip to board. Have spares for all the parts anyway.

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