This interesting circuit of the 50s uses a fluorescent lamp to obtain a stroboscope useful for the rotation of motors. The circuit uses a power valve to control the 10W fluorescent lamp.
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...