Interface device for remote control

Details Interface device for remote control Interface device for remote control

1979-11-16

1982-03-02

Pitts, Harold I.

Communications: electrical

Condition responsive indicating system

Specific condition

340660, 340664, G08B 2100

Patent

active

043180949

ABSTRACT:
An interface device for the remote control of pulse activated, mechanically held relays or master switches by control devices which have a continuous output, such as time clocks, security system devices, and thermostats. The presence of a continuous input signal is decoded by the electronic circuitry into a momentary output signal to be applied to the "on" side of a remote control relay. When the input signal is removed, the device decodes this lack of signal and produces a momentary signal to be applied to the "off" coil of the relay. Input terminals are provided with four types of input signals -120 volts AC, 12 volts DC, a contact closure, and a contact opening. Three output terminals are provided, namely, "common," "on," and "off" terminals for connection to the remote control relays. Another set of terminals can be provided to allow the use of an external power supply load with the device, by incorporating a control relay within the device capable of handling 20 amps. Also several sets of "on" and "off" output terminals which are isolated from one another can be provided.

REFERENCES:
patent: 3766432 (1973-10-01), Markowitz
patent: 3826968 (1974-07-01), Visser
patent: 3943409 (1976-03-01), Brown

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