Fan motor drive control apparatus

Details Fan motor drive control apparatus Fan motor drive control apparatus

2006-02-17

2009-06-23

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Plural diverse motor controls

C318S066000, C318S067000, C318S069000, C318S280000

Reexamination Certificate

active

07550936

ABSTRACT:
A fan motor drive control apparatus comprises a plurality of drive circuits for driving respectively a plurality of fan motors, and a speed change-over control circuit for transmitting a control signal for changing over speeds of the fan motors, to the plurality of the drive circuits, wherein each of the drive circuit comprises a stopping detection terminal for detecting stopping of a fan motor as an object to be driven, and the speed change-over control circuit transmits the control signal in accordance with a signal received from the stopping detection terminal.

REFERENCES:
patent: 5438226 (1995-08-01), Kuchta
patent: 7305316 (2007-12-01), Frankel et al.
patent: 5-2570 (1993-01-01), None

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