Tool Review: MESR-100 ESR Meter for in-circuit Capacitor Testing

Unbox and brief demo of MESR-100 ESR meter for testing electrolytic capacitors in or out of circuit.
If you need one: amzn.to/2WPNo2C

[@fritzj6803]

Great tutorial. You can also test the resistance and microhenries of the inductors with the esr meter. The reactance formula is 2𝛑FL. That would be 2 x 3.14 x frequency of esr meter which is 100kHz x 100uH Just plug it in.
R=0.628 X L(uH)
L(uH)=R(ohms)/0.628

[@andysummersthxcinemaandmyc7748]

houston , we have yanmis
i got mine to no day , from the amazon forest . i see you get your bats from them as well .
i have few items to possible repair , just randomly looking at videos get idea on how to use the device and build up some motivation
1:19 it got me as well , thinking i need 9v bat , i have bundles of 1.5v

[@btasler]

Dude that first one is a polyfuse.

[@joelstolarski2244]

Is this one better than the Peak in circuit cap tester ?

[@mariuszkalwer5278]

What the f..ck????

[@edwardrenas1026]

Nope, I wish I would have just ordered the Peak or Blue ESR meter because of their better build and longer leads. The leads compatible with the MESR-100 are about six inches long making it difficult to use on circuit boards. You can try longer leads but I've not found anything that would calibrate (zero) properly.

[@MrOner07]

peak esrs are better.it measures capacitance. and more user friendly... but it also costs £80... where this chinese one costs just £30...and it works really well too!

[@qua7771]

So does it measure ESR?

[@hotpuppy72]

Yes