Found in Motorola's 1968 power circuit manual, this circuit has a high input voltage and no information was given about the transformers as the original types are commercial at the time.
Found in a Popular Electronics from the 90's, this circuit is used to indicate the operation of...
The integrated circuit used in this 1987 project is not very common these days. However, if found...
This car alarm was found in an American '80s documentation. The circuit automatically activates...