Author Topic: Peaktech 4250 AC/DC current clamp teardown and repair.  (Read 102 times)

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Offline The Soulman

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Peaktech 4250 AC/DC current clamp teardown and repair.
« on: January 13, 2018, 07:40:01 AM »
I've owned this clamp now for a while but never was satisfied with the low current readings there was to much noise and drift to be useful.
After reading here:  http://www.eevblog.com/forum/testgear/hantek-cc-65-acdc-current-probe-teardown-and-testing/
about insufficient decoupling in the Hantek CC-65 I decided to open up my (similair but not exactly the same) Peaktech.
And discovered there weren't any electrolytic capacitors fitted at all!  :-//
Fitted some 33uf 35V caps because that is what I had and it functions much better now.  :-+
Anyone has an idea about who could be the OEM of these clamps and what each of those trim pots does?
No point in making a point just to make a point, that would be pointless.
 

Offline The Soulman

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Re: Peaktech 4250 AC/DC current clamp teardown and repair.
« Reply #1 on: January 13, 2018, 07:41:06 AM »
More pics..
No point in making a point just to make a point, that would be pointless.
 

Offline The Soulman

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Re: Peaktech 4250 AC/DC current clamp teardown and repair.
« Reply #2 on: January 13, 2018, 07:42:14 AM »
Caps fitted..
No point in making a point just to make a point, that would be pointless.
 


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