Temperature control circuit with the temperature range of -10℃ to 20℃

Published:2011/5/9 19:51:00 Author:TaoXi | Keyword: Temperature control, temperature range | From:SeekIC

Related components PDF download: TCA965BC327BCW80 This circuit can be used to adjust the temperature of room or container. It uses the thermistor K274S1 (with the metal shell) as the sensor, and it can be used in the air or liquid. The amplifier circuit is assumed by the window discriminator TCA965 and the rear PNP transistor. By designing the input divider, we can observe the cut-off point of the sensor, when you cut off it, the yellow LED will turn on, and the relay will release. If the temperature is too low, the relay will turn on (red LED turns on), we can heat the 2x1.5kW equipment by using the relay, the given temperature is adjusted by the potentiometer R. Main technical data: Operating voltage: 220VDC supply voltage: 12VRelay max current: 200mARelay turn-on temperature: -10 ℃ to +25 ℃Hysteresis width: max 15mV (equivalent to 1 ℃)Relay connection equipment power: 2x1.5kW



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