Load control apparatus and load control system

Details Load control apparatus and load control system Load control apparatus and load control system

2008-01-01

2008-01-01

Pham, Toan N. (Department: 2612)

Communications: electrical

Systems

Selsyn type

C340S537000, C340S538000

Reexamination Certificate

active

07315234

ABSTRACT:
A load control apparatus is connected to a master station through a power line supplied with direct-current power. The load control apparatus is driven by the direct-current power supplied from the power line to communicate with the master station through the power line. The load control apparatus includes a PLC part, first and second branch lines, connected to the power line, an impedance element connected to only the second branch line, a motor connected to only the first branch line, a condenser connected in parallel with the motor, the condenser having a capacitance resonating with an inductance component of the motor and frequency of the communication signal, a control part configured to perform a variety of processes, based on the communication signal received by the communication part communicating with the master station, and a circuit power part connected to the second branch line through the impedance element and configured to supply the PLC part and the control part with the desired power.

REFERENCES:
patent: 6229432 (2001-05-01), Fridley et al.
patent: 2004/0223275 (2004-11-01), Yanagida et al.
patent: 2006/0224278 (2006-10-01), Yanagida et al.
patent: 2007/0013492 (2007-01-01), Yanagida et al.
patent: 2004-120740 (2004-04-01), None

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