FET Follower (CB6132E)

This 1967 Electronics World circuit is suitable for frequencies up to 1 MHz. The setting applies to virtually any junction FET.

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Bistable Logic Relay (CB25738E)
We found this circuit in the magazine Eletcronics Now of July 1994. The power supply is according to...
Pendulum Alarm or Sismograph (CB869E)
This simple circuit produces a tone when triggered by any vibration picked up by the sensor. The...
Center Tap Simulation with Diodes (CB4140E)
In the figure we show how two diodes can be used to simulate the center tap of a push-pull driver step....