Operating in class AB1, this high-fidelity amplifier was found in the 1961 RCA tube manual. The circuit has high input impedance and good gain.
To operate with high input voltages using a 3-terminal voltage regulator such as the LM340-15, we...
This circuit was found in an American magazine in 1976. It doubles the frequency of TTL signals in the...
Found in a 90s Maxim documentation, this circuit disconnects the battery in case of overload. The...