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Circuit Bench

  • Light relay (CB23551E)

      This photoelectric cell light relay was found in Radio Electronics magazine from April 1958. The...

  • Wireless Microphone MW (CB12886E)

      This experimental AM microphone was found in an Argentine publication from 1973. The recommended...

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      This is an improvement on the previous circuit with a preamplification stage. The circuit is from...

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