Patent ID: 9305729
Filing Date: 2016-04-05
CPC Classification: H01H

Claim Text:
1. A normal relay emulator comprising: a trigger circuit configured to detect a condition on a first power rail, the first power rail having a first voltage supply level; a boost converter electrically coupled to the first power rail and configured to boost the first voltage supply level to a second voltage supply level, the second voltage supply level higher than the first voltage supply level; a bi-stable relay having a first terminal and a second terminal; and an actuator electrically coupled to the boost converter and communicatively coupled to the trigger circuit, the actuator configured to energize the bi-stable relay using the second voltage supply level such that electrical contact between the first terminal and the second terminal changes between a first state and a second state based on the trigger circuit detecting the condition, wherein the trigger circuit monitors the first power rail to determine when a voltage of the first power rail is restored and exceeds a threshold voltage after interruption of the first power rail providing the first voltage supply voltage, the trigger circuit causing the bi-stable relay to enter a known state upon determining the voltage of the first power rail is restored and exceeds the threshold, the trigger circuit to determine a voltage output of the boost converter, the trigger circuit to prevent the actuator from energizing the bi-stable relay when the voltage output of the boost converter is determined to be insufficient.