This detector uses an unusual sensor today. The circuit is from an 80s documentation. Its sensitivity is 10 ppm. The transformer has two secondary voltages.
This circuit was obtained from 1967 documentation. It uses a sensor to determine the trigger...
Found in an old Popular Electronics this circuit can also be adapted to be used as a shield. In...
This one-digit TTL modulus for 7-segment display can be parto f digital projects. Many of them can be...