JPS55143620A - Temperature controller - Google Patents

Abstract

PURPOSE: To exercise temperature control over an air conditioner, etc., by making into a semiconductor integrated circuit a part including a comparator, load output circuit and cooling-heating switching inverter, by providing a terminal for the selection of either cooling or heating operation, and then by controlling OR-ELSE to give effect to both the cooling and heating.

CONSTITUTION: On detecting the temperature of a controlled system such as an air conditioner controlled by a heat source by a thermistor, etc., bridge 33 puts comparator 34 into operation. Load output circuit 39, on the other hand, drives the heat source and between comparator 34 and circuit 39, cooling-heating switching inverter 61 consisting of OR-ELSE is interposed. Then, a part including at least comparator 34, circuit 39 and inverter 61 is made into a semiconductor integrated circuit and as one of input-output terminals of the circuit, terminal 29 is provided which provides the selection of either of cooling or heating operation to control OR- ELSE, thereby giving effect both the cooling and heating. Consequently, this system can be used for both cooling and heating, so that the temperature control over the air conditioner, etc., can be exercised.

COPYRIGHT: (C)1980,JPO&Japio