Motor drive circuit

Details Motor drive circuit Motor drive circuit

2006-05-23

2006-05-23

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

C318S285000, C318S452000, C318S484000

Reexamination Certificate

active

07049772

ABSTRACT:
A motor drive circuit which have a first source-side transistor and a first sink-side transistor connected in series; a second source-side transistor and a second sink-side transistor connected in series; and a control circuit supplying the first source-side transistor, the first sink-side transistor, the second source-side transistor, and the second sink-side transistor with control signals for supplying a current in one direction or the opposite direction to a coil connected between a connection point of the first source-side transistor and the first sink-side transistor and a connection point of the second source-side transistor and the second sink-side transistor based on a plurality of input signals that complementarily change at a predetermined frequency. The control circuit, during each time period between timings of complementary switching of the plurality of input signals, outputs control signals for turning on and off the transistors in a predetermined manner.

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patent: 6501609 (2002-12-01), Saito et al.
patent: 6563284 (2003-05-01), Teutsch et al.
patent: 2002-272162 (2002-09-01), None

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