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 car turn signal circuit was found in the April 1969 issue of Radio Electronics magazine. The...
We found this circuit in a documentation about SCRs from the 70s. The circuit can be implemented with a...
This circuit was found in a 1998 documentation and its purpose is to automate controls by timing its...