US Patent 11305128 Defibrillator discharge testing

A variety of methods and discharge test circuits are described that are well suited for testing H-bridge based defibrillator discharge circuits. The H-bridge includes four switches and two outputs. In one aspect, a test discharge circuit is provided that includes a resistive element and a switch that are coupled to the second H-bridge output. The H-bridge and test circuit may be controlled to test various aspects of the H-bridge based defibrillator discharge circuit.