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Post subject: ESR meters for testing caps in circuit
Posted: Wed Oct 05, 2011 7:48 am
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Does anyone have experience using an ESR (equivalent series resistance) meter for testing capacitors in-circuit without having to desolder?

I need more info before buying one such as:

http://www.eds-inc.com/cap.html

This also checks DC Resistance (DCR).

Thanks,
Kurt


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Post subject: Re: ESR meters for testing caps in circuit
Posted: Wed Oct 05, 2011 7:02 pm
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That really looks interesting,but I didn't see the price.


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Post subject: Re: ESR meters for testing caps in circuit
Posted: Wed Oct 05, 2011 8:16 pm
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One of the distributors sells online and it said 229.95 cheers


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Post subject: Re: ESR meters for testing caps in circuit
Posted: Thu Oct 06, 2011 5:42 am
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wingman111 wrote:
One of the distributors sells online and it said 229.95 cheers

eeeyow!! :shock:


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Post subject: Re: ESR meters for testing caps in circuit
Posted: Thu Oct 06, 2011 8:27 am
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I'm always afraid mesuring component in circuit because lots of other components are in parallele with the capacitor you want to check. The cap checker can't make difference.

IMO we should always desolder at least one lead.


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Post subject: Re: ESR meters for testing caps in circuit
Posted: Thu Oct 06, 2011 8:33 am
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stratele52 wrote:
IMO we should always desolder at least one lead.


+1

That's the way I was taught too.

Arjay

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"Here's why reliability is job one: A great sounding amp that breaks down goes from being a favorite piece of gear to a useless piece of crap in less time than it takes to read this sentence." -- BRUCE ZINKY


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Post subject: Re: ESR meters for testing caps in circuit
Posted: Thu Oct 06, 2011 8:50 am
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What do you expect to do with this tester ? All test equipment have a ( ? ) zone. You have to know some electronic basic , But sometimes when you buy a new test equipment like a new gear this drive you to learn someting,

But it is a lot of money do some research before.
I see many year ago a test equipment desing for mesuring something IN circuit , I don't remember what . But the joke is in the user manual they said " even this test equip can mesure in circuit, is allway better to unsolder the component to be tested "...................


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Post subject: Re: ESR meters for testing caps in circuit
Posted: Thu Oct 06, 2011 10:34 am
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Retroverbial wrote:
stratele52 wrote:
IMO we should always desolder at least one lead.


+1

That's the way I was taught too.

Arjay

That's what I've always heard,and read,...if the tester was a decent price it would be interesting to check it both ways to see what the difference could be in the readings you came up with,but I'm not that interested. :mrgreen:


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