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  • Stepped Timer (ART726E)
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Circuit Bench

  • LM386 Oscillator (CB24988E)

      Circuits like this one, using the LM386 audio amplifier, are available from other sources in this...

  • Geiger counter with high voltage source (CB22333E)

      This circuit includes a high voltage inverter to power a Geiger tube. We found it in an American...

  • Zero-crossing synchronized switch (CB25077E)

      We found this circuit in the October 1987 issue of Radio Electronics magazine. The circuit uses...

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