This 1968 Hughes circuit uses period components and operates at 8 Hz. Current equivalent components may be employed. Note the high supply voltage.
This fully isolated control circuit provides an output signal by triggering a 130 mA relay when...
The capacitor used in this circuit can have values between 5 and 30 uF. The circuit is of old...
We found this circuit in an old Argentine publication. The transistor can be replaced by a more...