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Which tool for testing big capacitors:Atlas ESR70, DE 5000, Sencore lc53 Z-meter

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tautech:

--- Quote from: BigFarma on June 19, 2023, 07:22:14 am ---Nothing crazy in size, not even microwave sized but I guess Im trying to future-proof. The largest caps I have currently that need testing are 200v 680uf

--- End quote ---
Oh piddly little ones.
ST42 SMD tweezers have no problem with 3900uF.

sonpul:
ESR is not the most important parameter. But if it's enough for you, you can use the DE5000 to measure ESR any large-capacity capacitor at any frequency in Rs mode. For example, 18000uF at 100 kHz.

HighVoltage:
If you want one of the best capacitor testers, look for the Sencore LC103

But unfortunately the used prices these days are higher than the original Sencore list price.

alm:

--- Quote from: J-R on August 09, 2023, 06:56:36 am ---If you truly only need to test large capacitors, then the ESR70 might be OK, but personally I became frustrated with how often it simply wouldn't provide a reading.  Is the capacitor bad, does it need to be removed from the circuit or both?  I hit the 0.3uF lower limit too often.

--- End quote ---
How often do you find < 0.3 uF caps that are high in ESR or low in capacitance? In my experience ceramic and film caps are way more reliable than aluminium electrolytics.

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