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Using DMM on Possibly Charged Caps
Rob wrote: I have several DMMs, including a Fluke 77. Let's say I'm testing a high voltage, possibly charged cap such as a motor run capacitor. Is it safe to use the DC voltage measurement function to see if the cap has been safely discharged? What about on cheaper DMMs, is this typically possible? Does it make sense to measure the resistance across the leads of a cheap DMM with another DMM when it is in DC Voltage mode to see if this would be the case? What on earth do you have in mind ? Why would you do that ? Is it ever safe to use a DMM to measure a voltage in your mind ? Graham |
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