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|06-06-2012, 22:13||#1 (permalink)|
Join Date: May 2011
Thanked 7 Times in 7 Posts
what is the best method to check if capacitor short ?
until today i've examine a lot of pics that ask to check if capacitor is short , im doing it right remove him and measure by ,multimeter or just look for any bad signs on him , like color , shape etc ... ?
Thank you all
|06-06-2012, 22:39||#2 (permalink)|
No Life Poster
Join Date: Aug 2006
Location: Free Palestine
Thanked 6,636 Times in 3,719 Posts
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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