Interface circuit for use in multi-split air conditioning system

Details Interface circuit for use in multi-split air conditioning system Interface circuit for use in multi-split air conditioning system

1995-05-11

1996-11-05

Tanner, Harry B.

Refrigeration

Automatic control

Diverse, cascade or compound refrigeration-producing system

62298, 236 51, 34087017, F25B 4902

Patent

active

055705863

ABSTRACT:
An interface circuit for producing a single DC control voltage in response to any one of a plurality of different AC control voltages. The interface circuit includes a plurality of AC inputs for receiving different respective AC control voltages and a DC output. A comparator controls the voltage at the DC output in accordance with a reference voltage and a DC control voltage. An AC to DC converter includes a scaling network which generates the same DC control voltage without reference to which one of the AC inputs is receiving its respective AC control voltage.

REFERENCES:
patent: 4643002 (1987-02-01), Dennis et al.
patent: 4763485 (1988-08-01), Sparks
patent: 4829779 (1989-05-01), Munson et al.
patent: 5039009 (1991-08-01), Baldwin et al.
patent: 5237826 (1993-08-01), Baldwin et al.
patent: 5247805 (1993-09-01), Dennis

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