Electronic speed regulator for a d.c. motor

Details Electronic speed regulator for a d.c. motor Electronic speed regulator for a d.c. motor

1981-11-09

1984-05-22

Weldon, Ulysses

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318331, 318334, 318345B, 318345F, G05B 500

Patent

active

044503920

ABSTRACT:
An integrated circuit regulator in which current regulation is effected by means of a current mirror utilizing motor current as an input. The base currents of the transistors of this current mirror are supplied by a second current mirror whose operation depends on that of the first one. The device is used for speed control in battery-operated motors for record players and recorders.

REFERENCES:
patent: 3705337 (1972-12-01), Grabl
patent: 4163182 (1979-07-01), Tanikoshi
patent: 4189666 (1980-02-01), Tetsugu et al.
patent: 4227127 (1980-10-01), Fukaya et al.
patent: 4234835 (1980-11-01), Ota et al.
patent: 4272709 (1981-06-01), Mizumoto et al.
patent: 4345189 (1982-08-01), Kukaya et al.

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