초록 ▼

An apparatus for interconnecting a four wire control such as a thermostat and a four wire system such as a heating/cooling system with two wires. An encoder encodes signals provided by the thermostat so that four encoded signals may be transmitted over a two wire system. The apparatus includes induc

An apparatus for interconnecting a four wire control such as a thermostat and a four wire system such as a heating/cooling system with two wires. An encoder encodes signals provided by the thermostat so that four encoded signals may be transmitted over a two wire system. The apparatus includes inductors which are selectively connected to the thermostat thereby providing varying signals which can be delivered over the two wires between the thermostat and the system.

대표청구항 ▼

An apparatus for use in combination with a control thermostat having first, second, third and fourth control ports which are associated with first, second, third and fourth system ports of a heating/cooling system responsive to the control, said apparatus comprising: first means for encoding signals

An apparatus for use in combination with a control thermostat having first, second, third and fourth control ports which are associated with first, second, third and fourth system ports of a heating/cooling system responsive to the control, said apparatus comprising: first means for encoding signals provided by the control thermostat, said first means having first, second, third and fourth encoding input ports connected to the first, second, third and fourth control thermostat ports, respectively, and said first means having only first and second encoded ports; second means for decoding signals provided by the first means, said second means having only first and second decoding ports and having first, second, third and fourth decoded output ports connected to the first, second, third and fourth heating/cooling system ports, respectively; third means for interconnecting the first and second encoded ports to the first and second decoding ports, respectively; and fourth means for supplying power to said second means.