We found this circuit in an American documentation from the 90's. The circuit makes use of general purpose NPN transistors. The 0.005 uF (5nF) capacitors determine the frequency.
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...