-55℃ to +150℃ digital thermometer circuit

Published:2011/5/10 22:31:00 Author:Christina | Keyword: digital, thermometer circuit | From:SeekIC

This circuit is composed of the new semiconductor temperature sensor IC two-terminal device SL590 and the 3-bit half-digital voltage panel meters 5GM14433, and it can measure the -55 to +150 ℃ temperature range. The temperature is changed into the current signal by SL590, and the current signal is changed into the voltage signal (corresponds to the Celsius temperature) by the operational amplifier, then the voltage signal gets into the 5GM14433's VX input port and becomes the digital signal that is desplayed by the LED. The power supply is the AC, DC-style. AC power supply has 220V voltage, or you can use four 1.5V batteries as the power.



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