Signal controller overload protection circuit - has disconnection store controller, two threshold switches and flip=flop

摘要

The circuit controls blinking lights on motor vehicles. It has a disconnection store controlled through a threshold switch by a critical voltage drop across a resistor in series with a power switch and the load. A first threshold switch is between the power switch and the resistor and has a delay element. A second threshold switch is between the power switch and the loads, and outputs of both threshold switches are connected to the setting input of a flip-flop whose blocking output is connected to the blocking input of the signal controller. Its resetting input is connected through the main switch to a voltage source.