Posted by MarkB_MI on October 22, 2017 at 05:49:43 from (70.194.47.192):
In Reply to: Re: Bad condenser posted by Texasmark1 on October 21, 2017 at 18:40:38:
> My memory says .01 microfarad capacitance but it is old and rusty. DMM input impedance is in the multi meg ohms. 9 volt battery. Don't expect a suitable answer. You are down in the millijoules or less and they don't register to the naked eyeball.
I'm not sure what your point is, Mark. You can certainly test an automotive condenser for an open condition with a DMM. The input impedance of the DMM is irrelevant on the ohms scale. If the resistance goes negative when you reverse the leads, the capacitor is not open. I did compare the suspect condenser with the orginal one, which tested good.
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