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Circuit Bench

  • Small Amplifier for Handset 2SB77 and 2SD77 (CB18861E)

      This small earphone amplifier with germanium transistors was obtained in a Japanese publication from...

  • 5 V x 10A power supply (CB15926E)

      This powerful regulator, shown in the figure is for 5V (TTL) is suggested by Motorola and makes use...

  • Operational Overcurrent Switch (CB12313E)

      We found this circuit in an English publication in 1991. The circuit can be assembled with...

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