Oil pressure display circuit

Published:2011/5/26 1:33:00 Author:Christina | Keyword: Oil pressure, display circuit | From:SeekIC

The sensor changes the oil pressure into the variable resistance RT. The variation of RT changes the bias voltage of each crystal transistor, the three LEDs (red, yellow and green) light in different positive biases. So we can ensure that every time there is only one light-emitting diode shining to indicate the corresponding hydraulic.



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