The breeze ceiling fan temperature control circuit

Published:2011/6/28 21:12:00 Author:qqtang | Keyword: ceiling fan, temperature control | From:SeekIC

In the figure is the breeze ceiling fan temperature control circuit which consists of the temperature detection circuit and step-down rectifier power supply. In the circuit, the power supply provides with VDD=+5V DC voltage for the control circuit. The temperature detection control circuit is the dual steady trigger whose core is composed of IC(555), R5, R7, W1 and R6, and R6 and R7 is adopted with the NTC thermistor as the temperature detection element.When the environment temperature is rising, the resistance of R6 and R7 is falling down, which makes the IC to be reset because the LEV of 2-pin is dropping to 1/3VDD, and 3-pin is outputting a high LEV.



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