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Circuit Bench

  • CB21304E TV Transmitter (CB21304E)

      This small analog TV transmitter was found in an Electronics Now from the 90s. The range is around...

  • Zero Crossing Detector LM339 (CB15189E)

      We found this circuit in the 1982 SGS Linear Integrated Circuits Manual. Diode D1 prevents the...

  • 5 MHz oscillator with 250 kHz variation (CB13852E)

      We found this oscillator in a documentation for radio amateurs from the 1970s. The circuit can use...

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