Method and switching apparatus for recording the current in...

Details Method and switching apparatus for recording the current in... Method and switching apparatus for recording the current in...

2007-09-18

2007-09-18

Masih, Karen (Department: 2837)

Electricity: motive power systems

Limitation of motor load, current, torque or force

C318S430000, C318S432000, C318S434000, C318S433000, C318S254100

Reexamination Certificate

active

11203735

ABSTRACT:
A system and method for measuring the electrical current used by an electrical device and controlled according to the Pulse Width Modulation (PWM) method, such as a DC motor, the system using a Field Effect Transistor (FET) coupled to the electrical device such that the voltage applied to the FET is measured to ascertain in part, the current usage of the electrical device.

REFERENCES:
patent: 5204594 (1993-04-01), Carobolante
patent: 6016042 (2000-01-01), Miura et al.
patent: 197 04 861 (1998-08-01), None
patent: 98/10301 (1998-03-01), None

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