Published:2011/7/9 9:29:00 Author:Lena | Keyword: temperature detection, voltage-frequency switch | From:SeekIC
As shown in the figure, the temperature detection, temperature-voltage switch and voltage-frequency switch circuit is used to remote detect temperature. We connect the circuit and wireless transmitting circuit forming a temperature detection remote control transmitting circuit. In the circuit, temperature detection and temperature-voltage switch adopt integrated temperature sensor LM35DZ, this circuit detection temperature range is 0~100℃±O.25℃, linearity span range is 10mV/℃, work voltage range is 4~30V. Voltage-frequency switch circuit adopts special voltage-frequency switch integrated circuit LM131.
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