Found in the CQ radio amateur magazine, this circuit generates a standard 100 kHz signal. The circuit is from 1965 and can be made with modern equivalent transistors.
This CMOS Flasher was found in a Popular Electronics from 1978. It can still be easily assembled, as all...
This circuit was found in an old manual of linear integrated circuits of the 80's. Equivalent...
With this circuit you can control up to 3 A of LEDs in different sequences, using a PWM...