Speed control apparatus for d.c. motor

Details Speed control apparatus for d.c. motor Speed control apparatus for d.c. motor

1984-05-27

1984-10-02

Weldon, Ulysses

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318331, 318345B, G05B 500

Patent

active

044750714

ABSTRACT:
A speed control apparatus for d.c. motor includes a bridge circuit formed by the motor and a plurality of resistors. A branch of the bridge circuit which is located opposite to a branch defined by the motor comprises a resistor circuit including a thermistor, thereby achieving a speed control having a reduced temperature dependency.

REFERENCES:
patent: 2814012 (1957-11-01), Swanson
patent: 3560828 (1971-02-01), Kobayashi et al.
patent: 3568027 (1971-03-01), Bacon et al.
patent: 3777244 (1973-12-01), Kosaka
patent: 4085356 (1978-04-01), Meinema
patent: 4163182 (1979-07-01), Tanikoshi

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