Drive control circuit of motor drive unit

Details Drive control circuit of motor drive unit Drive control circuit of motor drive unit

1976-09-07

1979-02-20

Wintercorn, Richard A.

G03B 118

Patent

active

041403827

ABSTRACT:
The brake transistor connected across the winding of a film winding motor is provided with a capacitor connected to the base so that when the power supply for the motor is stopped, the charging of the capacitor is initiated and causes flow of a base current to the transistor.

REFERENCES:
patent: 3582747 (1971-06-01), Kearns
patent: 3820141 (1974-06-01), Aizawa et al.
patent: 4021826 (1977-05-01), Iwata et al.

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