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Circuit Bench

  • Rain alarm (CB20776E)

      This simple rain, leak or moisture detector circuit appears in other places on this site with...

  • LCD power supply (CB8713E)

           This circuit was obtained in a 90s EDN. The components used are from that time. The voltage...

  • Damped filter for triac (CB6742E)

          This circuit is from a 1967 General Electric SCR manual. The capacitors are polyester and the...

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