This circuit trips when the current in a load exceeds the programmed value that depends on Rx. The circuit is from the Radio Electronics magazine of June 1986.
Found in a 1980s documentation, this circuit works with a 12V relay. The horn is the boat's own. |...
This circuit was found in Delco documentation from 1966. The components are from that time....
This circuit, which can be built with several CMOS gates, was found in the March 1996 issue of...