This circuit was found in a 1967 documentation. It is intended for triggering a xenon LASER. Observe the high operating voltages of the circuit. The components used are uncommon today.
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...