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Heating resistor type flow-measuring device having a heating resistor and a thermoresistance, whose resistance value varies in response to the ambient temperature
Heating resistor type flow-measuring device having a heating resistor and a thermoresistance, whose resistance value varies in response to the ambient temperature
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机译:具有发热电阻和热电阻的发热电阻式流量测量装置,其电阻值根据环境温度而变化
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摘要
A heating resistor type flow-measuring device is capable of adjusting heating temperature of a heating resistor according to the ambient temperature as well as making the initial adjustment. A heating resistor, a thermoresistance, a group of the resistors, and an amplifier constitute a bridge circuit, and leading terminals of the group of resistors are connected to one of input terminals of an amplifier for amplifying an error voltage through MOS transistors. The heating temperature of the heating resistor can be changed by selecting one of the MOS transistors and turning it on.
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