Circuit and method for measuring current in an H-bridge drive ne

Details Circuit and method for measuring current in an H-bridge drive ne Circuit and method for measuring current in an H-bridge drive ne

1995-07-28

1997-12-30

Brown, Glenn W.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324651, 324725, 363 98, G01R 2728

Patent

active

057034907

ABSTRACT:
A circuit measures the driving and circulating current in an H-bridge drive network directly and linearly. Voltage across two current sensing resistors are input to two precision half-wave rectifiers. The output of the rectifiers are input to a differential amplifier via a circuit of resistors. The output of the differential amplifier is a signal representative of the current in the H-bridge for both the driven periods and non-driven or freewheeling periods.

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