3.9 A platinum resistance temperature sensor has a resistance of 120 Q at 0°C and forms one arm of a Wheatstone bridge. At this temperature the bridge is balanced with each of the other arms being 1202. The temperature coefficient of resistance of the platinum is 0.0039/K. What will be the output voltage from the bridge for a change in temperature of 20°C? The loading across the output is effectively open circuit and the supply voltage to the bridge is from a source of 6.0 V with negligible internal resistance.
3.9 A platinum resistance temperature sensor has a resistance of 120 Q at 0°C and forms one arm of a Wheatstone bridge. At this temperature the bridge is balanced with each of the other arms being 1202. The temperature coefficient of resistance of the platinum is 0.0039/K. What will be the output voltage from the bridge for a change in temperature of 20°C? The loading across the output is effectively open circuit and the supply voltage to the bridge is from a source of 6.0 V with negligible internal resistance.
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Transcribed Image Text:3.9 A platinum resistance temperature sensor has a resistance of 120 Q at 0°C and
forms one arm of a Wheatstone bridge. At this temperature the bridge is balanced
with each of the other arms being 1202. The temperature coefficient of resistance
of the platinum is 0.0039/K. What will be the output voltage from the bridge for a
change in temperature of 20°C? The loading across the output is effectively open
circuit and the supply voltage to the bridge is from a source of 6.0 V with negligible
internal resistance.
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