General PWM output signal drive circuit who examines test table of four car combination meter in state

The utility model discloses a general PWM output signal drive circuit who examines test table of four car combination meter in state, including PWM drive circuit above at least all the way, outside singlechip is connected to PWM drive circuit's input, and it includes two high frequency switch t...

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Bibliographische Detailangaben
Hauptverfasser:	Xiao Yongjun, Tu Lifen, Ding Yaoming, Xiong Zenggang, Li Jiping
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS BASIC ELECTRONIC CIRCUITRY ELECTRICITY INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT MEASURING MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS PULSE TECHNIQUE TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	The utility model discloses a general PWM output signal drive circuit who examines test table of four car combination meter in state, including PWM drive circuit above at least all the way, outside singlechip is connected to PWM drive circuit's input, and it includes two high frequency switch triode Q7, Q8, PWM drive circuit still includes current -limiting resistor R32, R40, R37 and retrieval fuse F64, current -limiting resistor R32, R40 are used for carrying out the current -limiting to the triode base, and wherein current -limiting resistor R32 one end links to each other with the singlechip, other end linked switch triode Q7's base, current -limiting resistor R40 one end and singlechip link to each other, other end linked switch triode Q8's base, high frequency switch triode Q7, Q8's collecting electrode links to each other, and positive is connected to high frequency switch triode Q7's projecting pole, and high frequency switch triode Q7's emitter?ground, Q7, Q8 are used for constituting and recommend ou