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.
The integrated circuit of this 1976 configuration is the 7400 and the type crystal in televisions of the...
This circuit, from a technical documentation from the 1970s, converts a low frequency sinusoidal signal...
March 2017 - The new 2W DC-DC converters from Recom can now be porchased at Mouser Electronics. The new...