This circuit was found in a 1967 US publication. In it we have the implementation of a ring counter using only relays. Relay free contacts can trigger indicator lamps or LEDs.
This circuit utilizes a precision operational amplifier that can be replaced with an equivalent. The...
When we connect the power supply of the circuit shown in the figure the capacitor is discharged and thus...
This circuit has a thermal chamber that acts as a stabilizer, compensating for the ambient...