Detection circuit

The invention provides a detection circuit which comprises first to fourth resistors, first and second PNP triodes, first and second detection ends, a power source voltage input end and a power sourcevoltage output end; and the emitter electrode of the first PNP triode is connected with the power so...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WANG JUNFENG, PENG XIAO, MOU JIANBIN, ZHANG GANG, WU WENXING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The invention provides a detection circuit which comprises first to fourth resistors, first and second PNP triodes, first and second detection ends, a power source voltage input end and a power sourcevoltage output end; and the emitter electrode of the first PNP triode is connected with the power source voltage output end, the collector electrode of the first PNP triode is grounded via the thirdresistor and connected to the first detection end, the base electrode of the first PNP triode is connected to the base electrode of the second PNP triode, the emitter electrode of the second PNP triode is connected to one end of the second resistor, the other end of the second resistor is connected to the power source voltage input end and connected to the power source voltage output end via the first resistor, and the collector electrode of the second PNP triode is grounded via the fourth resistor and is connected to the base electrodes of the first and second PNP triodes. The detection circuit is low in cost and powe