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Circuit Bench

  • CMOS Proximity Switch (CB1277E)

        This circuit was found in a 1977 CMOS Integrated Circuit Cookbook. The circuit should not be...

  • Telephone Test (CB16866E)

      The purpose of this circuit, found in a 1994 documentation, is to provide resources for testing...

  • Process timer (CB21865E)

      We found this timer for times of a few minutes in a 1974 Ferranti transistor manual. The relay is 37...

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