MOSFET Amplifier Stage (CB26315E)

Found in a 1990s Popular Electronics, this circuit uses a small transformer matched to the impedance of the speaker being driven.

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Binary demonstrator (CB22148E)
This circuit serves as a binary demonstrator using 3 LEDs. The circuit can be scaled up for a...
Automatic Hand Dryer (CB17658E)
Of course, the design indicates a specific application for a touch switch. Thus, analyzing the...
Double Action Timer (CB13166E)
The configuration shown in the figure has been requested a lot by many readers who need a circuit...