This 1977 circuit only allows the solenoid to energize if the right combination of switch positions is selected. The relay is 6 or 12 V depending on the low voltage supply used.
This circuit, which appears elsewhere on this website, was obtained from 1967 General Electric...
This circuit can be found elsewhere on this site as part of alarms or sirens. The circuit given is...
This circuit is intended for charging 12 V Nicad batteries, which corresponds to 10 common...