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 Audio System circuit was found in 1965 documentation. It is a 50 ohm line circuit with 22 dB...
This 1.5 A circuit has the output voltages adjusted by a selector switch. We found it in a Popular...
Three LM158, LM258, LM358, or LM2904 operational amplifiers are used in this instrumentation amplifier....