Current sensing of DC or a stepper motor

Details Current sensing of DC or a stepper motor Current sensing of DC or a stepper motor

1989-02-22

1991-07-16

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307574, 307270, 307257, 323315, 357 234, H03K 17687, H03K 301, H03K 1774, H01L 2910

Patent

active

050327453

ABSTRACT:
A H-bridge circuit is disclosed using DMOST switches having current sensing parallel connected elements. An op-amp control circuit is coupled to the power and sense sources to force the sense source to the same potential as the power source. The op-amp circuit drives FET output devices which produce an output current proportional to the H-bridge current. A high voltage op-amp configuration is set forth.

REFERENCES:
patent: 4454454 (1984-06-01), Valentine
patent: 4590456 (1986-05-01), Burton et al.
patent: 4680490 (1987-07-01), Baker et al.
Grebene, "Analog Integrated Circuit Design", 1972, pp. 244-245.

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