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|06-06-2012, 22:13||#1 (permalink)|
Join Date: May 2011
Thanks Meter: 14
what is the best method to check if capacitor short ?
Thank you all
|06-06-2012, 22:39||#2 (permalink)|
No Life Poster
Join Date: Aug 2006
Location: Palestine Free
Thanks Meter: 4,960
Small capacitors should read "open". Large caps will show a "kick" of low impedance, but it will quickly climb and become very high. If the value remains low, you have a shorted cap.
If you want to test a cap to verify its value, you have to get fancier. Applying 60 Hz from a small transformer (less than the cap's rated voltage) and measuring the AC current will let you calculate the capacitance and show if the cap is still within its tolerance.
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