The temperature controller 4

Published:2011/8/5 2:24:00 Author:Ecco | Keyword: temperature controller | From:SeekIC

The temperature controller circuit is composed of the power supply circuit, the temperature detection control circuit and over-temperature alarm circuit, and it is shown as the chart. Power supply circuit is composed of the power transformer T, rectifier diodes VD4 ~ VD7, filter capacitor C3 and Zener VS. Temperature detection control circuit consists of the N1 ~ N3 which are inside of four operational amplifier integrated circuit IC (M ~ N4), resistors R1 ~ R1O, transistors V1 ~ V3, potentiometer RP, thermistor RT, LEDs VL1, VL2, diode VD2 and relay K. VD1 ~ VD3 select 1N4l48 silicon switching diodes; VD4 ~ VD7 select 1 N4007 silicon rectifier diodes.



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