Drive and control circuit for a brushless DC motor

Details Drive and control circuit for a brushless DC motor Drive and control circuit for a brushless DC motor

1992-06-02

1994-05-03

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318254, 361 33, H02P 126

Patent

active

053090764

ABSTRACT:
The present invention provides a drive and control circuit for a single phase, brushless DC motor. The drive and control circuit includes an integrated circuit having a maximum rated voltage lower than the maximum net voltage of the overall circuit. Internal transistors in the integrated circuit are used to drive the emitters of two external power transistors which are connected to the windings of the DC motor. In this manner, a relatively inexpensive integrated circuit can be used to drive and control a DC motor having a much higher operating voltage.

REFERENCES:
patent: 4679112 (1987-07-01), Craig
patent: 4894745 (1990-01-01), Akagawa et al.
patent: 5091818 (1992-02-01), Morikawa et al.
patent: 5107387 (1992-04-01), Orton
patent: 5132866 (1992-07-01), Raciti et al.
patent: 5157571 (1992-10-01), Gotz
patent: 5157574 (1992-10-01), Tuusa

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