how to make non contact induction tester | electric induction tester | non contact tester

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  • Опубліковано 21 вер 2024
  • how to make non contact electrical induction tester
    electrical induction tester using three bc 547 transistor. use buzzer and LED for indication. use your old mobile battery for circuit power supply.
    visit my previous video to know how to recharge the battery.
    link is below
    • How to repair torch | ...

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