Title：Current pulse circuit implanted into nerve stimulator

Country：China

Patent No.：201210192335.9

Legal Status：Authorized

Inventor：Songping Mai, Yixin Zhao, Xiaohu Li, Chun Zhang, Zhihua Wang

Assignee：Graduate School at Shenzhen,Tsinghua University

Address：Tsinghua Campus, Xili University Town, Nanshan District, Shenzhen City 518055, Guangdong Province

Filing Date：2012-06-12

Issue Date：2014-12-10

The invention discloses a current pulse circuit embedded with a nerve stimulator. The current pulse circuit comprises a microprocessor, a first inductor, a first diode, a second resistor, a fifth resistor, a filter capacitor, a boost-buck DC-DC (direct-current-direct-current) chip, a first circuit output terminal and a second circuit output terminal, wherein the first circuit output terminal is grounded through the second resistor and the fifth resistor; the boost-buck DC-DC chip comprises an error amplifier, a PWM (pulse-width modulation) comparator, a switching tube, an SR trigger and an oscillator; the common terminal of the second resistor and the fifth resistor is connected into the first inverting input terminal of the error amplifier; the non-inverting input and output terminals of the error amplifier are respectively connected with reference voltage and the inverting input terminal of the PWM comparator; the oscillation output of the oscillator is connected with the non-inverting input terminal of the PWM comparator; the oscillator outputs a switching signal to the terminal S of the SR trigger; the output terminal of the PWM comparator is connected with the terminal R of the SR trigger; and the output terminal Q of the SR trigger is connected with the control terminal of the switching tube.

Patent Certificate： PDF/Jpg