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Ohmmeter and bad capacitor

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smiles

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With the exploded capacitor, use ohmmeter to measure the ohm value of capacitor, how does that value change ?
Thanks !!!
 

hbaocr

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hi, smile
Using Ohmetter to test the leak resistor of capacitor. and check equality of the capacitor which have big capacity (>10uF).
If u use VOM, choose Ohmmetter and choose the lowest scale.

Initially,the Ohm value decreases to near 0 fast. Then OhmValue increase to max value slowly (upon to Capacity of Cap) . Cap is usefull. But If the Ohm value donot increase the cap is shorted.If Ohm value donot Increase to near by max scale , the leak current of cap is considerable and u should give that CAP way
Be carefull.If You use DVM (digital mutimetter) the electric charge on CAP can destroy your DVM
 

    smiles

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smiles

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Thanks, if you don't mind tell me more when the case is Voltmeter for bad capacitor !
 

hbaocr

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Before test CAP let CAP be empty electric charging
when the value showed decrease to 0 fast initially, then
If it don't increase :the CAP is shorted
If it increases but the Ohm value showed is too small about <= 2/3 scale value the Cap maybe have problem with leak current!
 

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