This circuit uses components that are still common despite being from 1995 documentation. The circuit can be powered by 6 to 12 V voltages and the speed of the LEDs' sliding effect is set to P1.
Found in a 90s Popular Electronics, this circuit triggers a relay in case of overvoltage. Can be used as a...
The pulses applied to input C of the SAA1027 integrated circuit determine the engine speed. Each...
Found a documentation on PCs from 1996, this circuit can be used as a shield. The relay is rated at...