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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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![]() I seem to be accumulating a pile of things with faults that are most likely down to dodgy capacitors, but my homebrew ESR meter's one of those things that is still in deep storage back in the UK. So... 1) I know that there was a thread a few weeks ago about ESR meters, and someone suggested one that was being sold on ebay - I think that listing's gone, but the site seems to be awash with others (all via China) which I believe are exactly the same product (e.g. http:// tinyurl.com/ces3y7m). They all show a capacitor hooked directly to the meter, though - so can anyone confirm that this meter is suitable for in- circuit testing? (typically I think meters output a sine wave around 100kHz with an amplitude below that which will trip TTL logic gates, do they not?) 2) Any other recommendations for a cheap meter? I really don't need inductance, transistor testing etc. as my DMM does that anyway ,so just plain ol' ESR will do. 3) Any recommendations for schematics for a DIY meter? I think I've got at least one moving-coil meter in the junk box, and a few op-amps of various types. I don't think I've got the schematic for the "in-storage" meter that I built any more. There are quite a few schematics available via google, but I don't know if any of them are any good or not... cheers Jules |
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