The circuit shown in the figure below is from the 1993 Linear Technology Applications. The operational ones used are uncommon and the use of equivalents can be analyzed.
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...