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Circuit Bench

  • Intercom LM388 (CB12190E)

      This circuit from a National Semiconductor manual from the 1980s shows how to use the LM388, a...

  • Beam Communicator (CB25533E)

      This circuit was found in the December 1992 Radio Electronics magazine. Range depends on optical...

  • Amplifier for Magnetic Transducer CA3140 (CB11972E)

      In the figure we show a widely used configuration for the CA3140. The power of this circuit can be...

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