This 1988 circuit makes a back-and-forth of LEDs whose speed is controlled by P1. All components used are common and the circuit can be powered by voltages from 6 to 9 V.
This circuit is an application for an operational amplifier with field effect transistors from...
With the circuit shown, you can turn the lamp on or off in the living room, without the need to...
This simple circuit aims to visualize the modulation of a signal from a transceiver. Capacitor C1 is from...