Over-temperature self-tripping protection system

The utility model provides an over-temperature self-tripping protection system. The circuit comprises a temperature detection and signal conversion circuit, a temperature signal comparison and amplification control circuit and a state indication circuit. The method is characterized in that the metho...

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Bibliographische Detailangaben
Hauptverfasser:	TAN ZHENGYANG, REN YINXIA, FAN QIXU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION MEASURING MEASURING QUANTITY OF HEAT MEASURING TEMPERATURE PHYSICS PULSE TECHNIQUE TESTING THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:	The utility model provides an over-temperature self-tripping protection system. The circuit comprises a temperature detection and signal conversion circuit, a temperature signal comparison and amplification control circuit and a state indication circuit. The method is characterized in that the method is characterized by comprising the following steps; the temperature detection and signal conversion circuit comprises an operational amplifier chip U1. The in-phase input end of the operational amplifier chip U1 is grounded through a wire. The inverting input end of the operational amplifier chipU1 is connected with the positive end of a temperature sensor St through a resistor R1. The negative end of the temperature sensor St is grounded through a wire. A terminal UT is led out from a firstbranch of the output end of the operational amplifier chip U1, a second branch of the output end of the operational amplifier chip U1 is connected with one end of a resistor R2 through a variable resistor RP1, the other end of