This is the traditional voltage follower configuration with the 741 operational amplifier. The circuit is from 1976 documentation and the power supply must be symmetrical from 6 to 15 V.
This filter is inserted between the interfering device and the interfering device. The coils are...
One touch on S1 and the circuit turns on. With a tap on S2 it turns off. This is the purpose of...
The purpose of this circuit is to prevent TTL circuits from receiving a voltage greater than 5 V...