Found a DIY component checker (Capacitance ESR Inductance Resistor NPN PNP Mosfet)
I wonder how accurate it is, when thing go haywire this might help check some components for accuracy
Measurement Range:
Resistor: 0.5Ω ~ 50MΩ
Capacitor: 30pF ~ 100mF
Inductance: 0.01MH ~ 10H
Working voltage: can use 6FF22 9V Battery, or DC 5.5V ~ 12V via DC socket
Controller: ATmega168 (has been programmed)
Standby current: 0.02uA
Operating current: 25mA
Possibly a few good leads and a those SMD component tweezers might be helpful too
I don’t have any test equipment for something like this, anyone have any experience with these or something like these?
If you think you can get anywhere near .01pf out of those I have a couple of nice bridges and a lovely canyon you might want to buy. Buy all three and I’ll toss in a nifty tower in Paris…
Usually $25,000 ESI VideoBridge with 4-wire Kelvin connections. And even that won’t do 0.01 pF. That takes elaborate test fixtureis and things like Vector Network Analyzers to resolve. Just the wrench to tighten the connectors on those costs a few grand.
The cables on those cheap meters may have well over 50pF of capacitance… good luck resolving .01 pF in that mess. Just because the display shows down to 0.01 pF does not mean the numbers have any basis in reality.
Probably, but I would not get one. Get a pair of those SMD tester tweezers. Measures voltage, resistance, capacitance, diodes, etc. Most cheap ones don’t do inductors… but inductor measurement tends to have lots of problems anyway…
