JPS54142480A - Control circuit - Google Patents

Abstract

PURPOSE: To eliminate the time lag and to reduce the temp. change, by means of changing the set temp. of temp. regulation of an air conditioner and the time of a timer which controls the starting of a compressor.

CONSTITUTION: The control circuit of an air conditioner is constituted of a temp. regulating part X, a timer part Y, and an output part Z. When the detected temp. by a thermistor Th is lower than the set value, the compressor is stopped by means of releasing the excitation of a sub-relay Ry by becoming to be ON of a transistor T₁, to be OFF of a transistor T₂, and to be OFF of T₆. When the transistor T₂ is OFF, the charging circuit of an interlocking variable resistance VR₂ and a condenser C is formed, and after a prescribed time elapse a transistor T₃ becomes to ON, and a transistor becomes to OFF. When the transistor T₂ becomes conductive along with the beaking of the transistor T₁ by the temp. rising, the charge of the condenser C is discharged via the transistor T₂ and a resistor R₂, the compressor starts by means of operating the sub-relay by becoming to be OFF of the transistor T₃, to be On of the transistor T₄, to be OFF of the transistor T₅ and to be ON of the transistor T₆.

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