The Shop > Electronics & IC Programing
need help with my pump!
75Plus:
Been using this capacitor tester for over 20 years. Have yet to find a swollen capacitor that checked good.
Joe
Darren:
Yes they used to be very expensive but I gather cap testers have come down a bit now?
How large a cap can it test up to, voltage and uf wise ?
75Plus:
--- Quote from: Darren on December 30, 2009, 11:09:01 AM ---
How large a cap can it test up to, voltage and uf wise ?
--- End quote ---
It will test from one pico farad (micro micro) to 20 milli farad (20 thousandth of a farad). It does not test for insulation breakdown as it only uses a 9 volt battery.
I bought it in the late 80's or early 90's. Think I paid about $40 US for it.
Joe
Bluechip:
Darren
I use one of these wotsits, not a 'stress tester' for caps but very accurate. Handy little tool to have. Chuffed with it... I have/had some 10k .01% resistors from an old analogue computer, they all read OK, so I surmise the thing is about spot on. (That's right 0.01% 1:10,000 :) )
http://www.test-meter.co.uk/products/lcr-meters/peak-atlas-lcr-meter-lcr40/
Got it some 3/4 yrs ago when Maplin mometarily lost a grip of their lifetime philosophy and sold 'em for less than Rapid/Farnell/CPC.
T'was £55 IIRC
Dave BC
Bernd:
I don't think there is anything wrong with the cap apperence wise. It looks like it was manufactured like that. The insulation may have broken down inside.
Bascially this breaks down to 2 possible problems electrical or mechanical. Since it's easier to replace the cap that would be first on my list. If that doesn't cure it, then I would think there is a binding in the bearings somewere when it gets warmed up.
Bernd
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