Patent ID: 8698426
Filing Date: 2014-04-15
Classification: G01R,H02H

Abstract:
1. A self-powered current sensing switch with digital setpoint comprising: a current transformer operative to develop an alternating current (AC) output; an alternating-current-to-direct-current (AC/DC) converter having an input coupled to the AC output of the current transformer and having a direct current (DC) output; an analog-to-digital (A/D) converter coupled to the AC output of the current transformer; a digital processor powered by the DC output of the AC/DC converter and having an input coupled to an output of the A/D converter; an electrically controlled output switch coupled to an output of the digital processor; a manually controlled input switch coupled to the digital processor and having a switch mode position and a calibration mode position; and digital memory coupled to the digital processor including code segments executable on the digital processor for: