Motor drive circuit

Details Motor drive circuit Motor drive circuit

1989-11-16

1990-07-17

Ro, Bentsu

Electricity: motive power systems

Limitation of motor load, current, torque or force

318432, 318472, H02P 706

Patent

active

049423479

ABSTRACT:
There is disclosed a motor drive circuit, into which an output circuit for supplying a drive output to a motor is incorporated, having a temperature compensating circuit or an output current regulating circuit added to a transistor, interposed between a servo IC for generating a servo signal and the output circuit, for supplying the output circuit with a drive current corresponding to the control output. A dependency on the temperature is obviated by arbitrarily setting an operating point of the output current and compensating temperature characteristics, and the motor is thereby protected from an excessive current.

REFERENCES:
patent: 4227127 (1980-10-01), Fukaya et al.
patent: 4338551 (1982-07-01), Mizumoto
patent: 4472666 (1984-09-01), Akeda et al.
patent: 4496885 (1985-01-01), Nitschke
patent: 4633358 (1986-12-01), Nagano

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