Extended range wired remote control circuit

Details Extended range wired remote control circuit Extended range wired remote control circuit

1995-03-06

1996-06-25

Wong, Peter S.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

34082569, 307117, 307141, E05B 4700

Patent

active

055303005

ABSTRACT:
A range extender module for extending the range capability of a barrier control system comprising a low voltage AC control unit which receives low voltage AC control signals conveyed by wires to input terminals thereof from a plurality of remotely located switches and responds to such AC control signals by controlling the barrier. The controlled barrier may be, for example, a garage door or a driveway gate. The range extender module is inserted into the wires between the low voltage AC control unit and the remote switches and includes a source of DC voltage, which is used to energize the formerly AC energized switches and responds to DC input signals created by operator interaction with the switches by selectively gating low voltage AC control signals to appropriate input terminals of the low voltage AC control unit for controlling the barrier. The use of DC voltage to energize the remote switches avoids problems caused by the use of low voltage AC signals over wires which exhibit a significant reactive component of impedance.

REFERENCES:
patent: 4771218 (1988-09-01), McGee
patent: 4878052 (1989-10-01), Schulze
patent: 5029662 (1991-07-01), Pena
patent: 5281970 (1994-01-01), Blaese
Catalog page and dealer price list: "New Productsion Offered.Pneumatic Edge Controls"; pricing eff. Feb. 1, 1992; MMTC, Inc., Chester, New Jersey 07930.

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