Anyone using an ESR meter? - HomeBrew Forum at eHam.net

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eHam.net Forum : HomeBrew : Anyone using an ESR meter?

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Anyone using an ESR meter?	Reply
by KC2MMI on July 22, 2004	Mail this to a friend!
And if so, has it been a useful tool to find bad caps while still in circuit? Have you tried any of the inexpensive ones (i.e. Dick Smith) or heard if they work OK?

RE: Anyone using an ESR meter?	Reply
by WB2WIK on July 23, 2004	Mail this to a friend!
I bought a "kit" ESR meter from a European source years ago...have to go home to look and see whose name is on it. It worked fine for testing electrolytic capacitors, to separate "good" from "bad," and the results are pretty digital, i.e., good or bad. If the cap has an equalizing resistor across it, this can impact the reading and may have to be removed (depends on the value of the resistor). If you have a shorted (or nearly shorted) rectifier in a power supply, that can make a capacitor reading erroneous (assuming this is an "in circuit" measurement). WB2WIK/6

RE: Anyone using an ESR meter?	Reply
by KC2MMI on August 1, 2004	Mail this to a friend!
Thanks, Steve, that's just what I'm looking for. What was once a very good quartz locked direct drive turntable that went dead on the shelf not being used, so I'm guessing some of the 2-3 dozen electrolytics in it has gone dead. Found some suppliers for the Australian model, temporarily out of stock they say, but I can wait patiently.<G> The meter is still cheaper than sending it in for an estimate, and there's not much else to do besides apply the Mark 1 Mod 0 eyeball and loupe--and they've already been through it.<G> Power supply is good, beyond that....Fool that I am, I sold my old AR turntable six months before, thinking who would ever need two.<G>

RE: Anyone using an ESR meter?	Reply
by WB2WIK on August 1, 2004	Mail this to a friend!
There's still a need for turntables? Holy cow. I got rid of every one of my turntables, save one old Bang & Olfsun (Scandanavian thing, it's very art-deco) which we still have and never use. Now that all the old stuff has been re-mastered digitally and available on CD or MP3 for a lot less than the cost of the original vinyl, I go with that. Glad to hear some people are still spinning vinyl. I stopped a long time ago. The XYL has this huge album collection from the sixties, but I can't find anything in there that hasn't been re-mastered digitally to sound better than it originally did! WB2WIK/6

RE: Anyone using an ESR meter?	Reply
by KC2MMI on August 1, 2004	Mail this to a friend!
Yes, Steve, it is called "After ten or fifteen years I got hold of an out-of-print album to replace a CD stolen from my car." The album never was released in any other format. So, I fired up the "just in case" turntable, which went woo. Woo. Woowoo. And stopped. A lot of the stuff that has been released on CD has been remastered, some of it very obviously different from the old releases. Not necessarily better or worse, ust DIFFERENT and after all the years of hearing it "this way" any other way is just irksome. Case in point, Crosby Still & Nash, where an organ(?) track that was deep in the background has been punched up enough on one cut to mke me wonder where the ice skating rink is.<G> It is't "bad" but it was inaudible on the LP (or rather, on the metal tape made from the virgin LP) after all these years. It shouldn't be on the CD, but someone decided to "improve" things. That seems to be the sad norm for a lot of CD releases.

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