Test circuit to check state of switch in battery powered equipment operating in standby mode has voltage supply connected to parallel circuit that connects with control unit and switching stage

摘要

The test circuit has a voltage supply that is connected to a parallel circuit (2) that connects with a control unit (3) and the switching stage (4). The test cycle is activated when the switch is in the stand by mode to check that the electrical system is fully switched off. The parallel circuit has a resistor (21) and a capacitor (22) and the check is made on a signal threshold basis.