Patent ID: 7629787
Filing Date: 2009-12-08
Classification: G01R,H02P

Abstract:
1. A current sensor circuit for monitoring current provided to a motor alternately from a first switching component coupled to a high voltage source and a second switching component coupled to a reference voltage, the current sensor circuit providing current sensor signals indicative of the monitored current to related low voltage components, the current sensor circuit comprising: a shunt resistor having a first side coupled to both the first switching component and the second switching component thereby receiving the current to be measured and a second side coupled to the motor to provide current; a first clamper diode having a negative terminal disposed to receive a first input signal, U a second clamper diode having a negative terminal disposed to receive a second input signal, U wherein the first clamper diode and the second clamper diode have equal values thereby causing said first and second input signals, U