Control bistable (CB21261E)

This simple control circuit was found in American documentation from the 1990s.

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Simple power supply (CB24570E)
This power supply with only 4 components has basic full-wave configuration. The diodes depend on...
1-Transistor Medium and Short-Wave Radio (CB18413E)
This two-band receiver capable of tuning medium waves and the 3.5 to 10 MHz band was sold in Japan...
JFET Current Drain (CB13422E)
This circuit was obtained in a 1974 documentation. It shows how to use a JFET as a low intensity...