Output circuit and brushless motor using the same

Details Output circuit and brushless motor using the same Output circuit and brushless motor using the same

1985-04-29

1986-08-26

Shoop, Jr., William M.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318439, H02P 602

Patent

active

046085246

ABSTRACT:
An output circuit to drive a current into a load. Collector voltage of a current controlling transistor is automatically adjusted to maintain h.sub.FE of the transistor constant, whereby saturation of the transistor and excessive power consumption are avoided. A brushless motor using the output circuit. Current detectors detect emitter current and base current of output transistors and h.sub.FE of the transistors are kept constant, whereby excessive torque loss and harmful vibration are avoided. A limiter limits excessive torque control to prevent power transistor saturation. A switching mode power supply adjusts the collector voltage of the transistor in a feedback loop to keep h.sub.FE constant.

REFERENCES:
patent: 4449081 (1984-05-01), Doemen
patent: 4472666 (1984-09-01), Akeda et al.
patent: 4494053 (1985-01-01), Gotou
patent: 4527102 (1985-07-01), Gotou
patent: 4535276 (1985-08-01), Yokobori

Affiliated with

Also associated with

Rating

Output circuit and brushless motor using the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Output circuit and brushless motor using the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Output circuit and brushless motor using the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2314061