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LM134-LM10 Thermometer/Temperature Sensor

2014-11-17 17:03  
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UsingLM134andLM10integrated circuits, we can build athermometerwhich has -55 to 150°C sensing range.? The ideal meter for this circuit is a 0-200uA digital ampere meter, which can show both positive and negative polarity. This will make the circuit suitable for indicatingtemperaturesbelow 0°C.? LM134 is basically a current source with very accurate and consistent temperature coefficient, so many temperature sensing application find it suitable for the sensor. Here is the schematic diagram of the circuit:

Thermometer circuit schematic

[Circuit's schematic diagram source: National Semiconductor Application Note]

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