This circuit was found in a 2002 publication. It is a circuit that indicates when an extension is being used. The LED is common, and the relay is 12 V sensitive type with a trigger current of 50 mA or less.
This circuit was found in a 2002 publication. It is a circuit that indicates when an extension is being used. The LED is common, and the relay is 12 V sensitive type with a trigger current of 50 mA or less.