LED lamp bead display ESR test meter

[daisizhou]

Found an ESR meter.I am going to make it
advantage:
1、Easy to use when repairing work(Don't want traditional analog or digital instruments,Obtaining ESR values also requires manual comparison,Capacitor performance is invalid)
2、Just look at the LED to judge the work efficiency

I hope that interested friends will discuss

[daisizhou]

Looks like( a real picture)

[kripton2035]

this picture is NOT the schematic above.
it is this one : http://kripton2035.free.fr/commercial%20esr/esr-zajic.html

( and the schematic above is this one : http://kripton2035.free.fr/analog%20esr/esr-baliasov.html)

[Tek Tech]

That's pretty neat.

I have personal preference for a needle microamp meter in ESR meters.

With the steady demand, simple construction, and very high prices of "factory-made" ESR meters, I am surprised that no one offers cheap ebay kits -- a PCB with parts could be less than $10. With case and meter: $20.

[daisizhou]

Yes,The physical map corresponding to the circuit diagram is not a picture like this.
I hope that the appearance looks like a picture.I am still looking for suitable materials and workable tools.

I am worried that the number of LEDs is too small.The measured ESR value is not accurate

[daisizhou]

That's pretty neat.

I have personal preference for a needle microamp meter in ESR meters.

With the steady demand, simple construction, and very high prices of "factory-made" ESR meters, I am surprised that no one offers cheap ebay kits -- a PCB with parts could be less than $10. With case and meter: $20.

Simulating the esr table, I am worried that the measurement is not accurate enough.
Of course, the analog table is easier to make.
But after all, pure mechanical pointer deflection error,And the effect of gravity, leading to the deflection of the pointer