Using operational amplifiers of the time, we found this circuit in documentation from the 90s. The configuration can be adapted to use modern operational amplifiers.
With this circuit you can control up to 3 A of LEDs in different sequences, using a PWM...
This is the typical circuit of a 60's tape recorder. The circuit uses only two transistors and has a...
This application is from a circuit manual from the 90s and only works with incandescent lamps. The triac...