Switching regulator system for a motor driving circuit

Details Switching regulator system for a motor driving circuit Switching regulator system for a motor driving circuit

1985-10-11

1987-07-21

Salce, Patrick R.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318812, 307313, 307315, H02P 528

Patent

active

046820965

ABSTRACT:
A motor driving circuit includes an equivalent power PNP transistor constituted by a Darlington connection of a small-current PNP transistor and a large-current NPN transistor, and a switching regulator of a step-down and variable type is provided between the collector of the NPN transistor and the emitter of the PNP transistor. Electric power loss in the motor driving circuit can be reduced, and the electric power required to operate the motor driving circuit can be saved.

REFERENCES:
patent: 3671833 (1972-06-01), Rakes
patent: 3909628 (1975-09-01), Muto
patent: 4054843 (1977-10-01), Hamada
patent: 4443750 (1984-04-01), Altena
patent: 4580090 (1986-04-01), Bailey et al.

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