Electronics & Technical Hub

electronics easy with ETH

  • Parts List:- Transistor BC547/548/2n2222 or any NPN Transistor
  • Diode IN4001-4007 1pc, LED any color
  • Resistor 1k, 100k, 100ohm 1pc each
  • 3volt battery (comos Battery/cell)
  • Probes red and Black or you can use wire also

Hello friends this is very simple component/continuity tester you can check any component like resister, coil, transformer, bulb ,tube , diode, transistor and also you can use this as a continuity tester . see video for detail

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