This circuit was found in the August 1972 issue of Radio Electronics magazine. The circuit generates 4 types of signals as can be seen in the diagram. The maximum frequency is around 20 kHz.
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...