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USB charging circuit for methanol gasoline detectors

A charging circuit and methanol gasoline technology, which is applied to battery circuit devices, circuit devices, current collectors, etc., can solve the problems of inaccurate detection values, inconvenient use and portability, and inability to transmit signals, and achieve accurate signal transmission, easy portability, simple structure

Inactive Publication Date: 2015-06-10
XIAN TIANHOU ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The structure of the USB charging circuit of the existing methanol gasoline detector is complicated, which leads to the large volume of the methanol gasoline detector, which is inconvenient to use and carry, and the signal of the existing charging circuit is very unstable, and the signal cannot be transmitted accurately, resulting in The detection value is not accurate

Method used

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  • USB charging circuit for methanol gasoline detectors

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Embodiment Construction

[0009] The present invention will be described in detail below in combination with specific embodiments.

[0010] see figure 1 , a USB charging circuit of a methanol gasoline detector, the charging circuit includes an integrated circuit chip, a transistor Q2, a diode D1, a diode D2, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C5, a capacitor C6, a capacitor C7, and a capacitor C8 , MOSFET switch Q1, inductor L1, transformer BT and Zener diode U2; 10 pins of the integrated circuit chip are connected to the base of the triode Q1 through a resistor R8, and its 6 pins are grounded through a capacitor C7, and the integrated circuit chip The 1-pin is grounded through the capacitor C3, the 3-pin is grounded through the capacitor C5, and the 5-pin and 7-pin are both grounded;

[0011] The collector of the transistor Q1 is connected to the 5V power supply through the resistor R6, one end of the MOSFET switch Q1 is connected to the collector of the transistor Q1, and th...

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Abstract

The invention relates to a USB charging circuit for methanol gasoline detectors. The existing USB charging circuit for methanol gasoline detectors is complex in structure, which makes a methanol gasoline detector big in size and inconvenient to use and carry; moreover, the existing charging circuit results in inaccuracy of detection values. The USB charging circuit for methanol gasoline detectors comprises an integrated circuit chip LS99701, a triode Q2, a diode D1, a diode D2, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, an MOSFET switch Q1, an inductor L1, a transformer BT, and a Zener diode U2. According to the invention, the integrated circuit chip LS99701 is employed as the control chip, the USB charging circuit is simple in structure and accurate in signal transmission, and a detector adopting the circuit is convenient to carry.

Description

technical field [0001] The invention relates to a USB charging circuit, in particular to a USB charging circuit of a methanol gasoline detector. Background technique [0002] The structure of the USB charging circuit of the existing methanol gasoline detector is complicated, which leads to the large volume of the methanol gasoline detector, which is inconvenient to use and carry, and the signal of the existing charging circuit is very unstable, and the signal cannot be transmitted accurately, resulting in The detection value is not accurate. Contents of the invention [0003] The object of the present invention is to provide a USB charging circuit of a methanol gasoline detector with simple structure and stable detection transmission signal. [0004] In order to solve the above technical problems, the technical solution of the present invention is: a USB charging circuit of a methanol gasoline detector, which is special in that: the charging circuit includes an integrate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/00
Inventor 张钢柱何寻社杨振辉
Owner XIAN TIANHOU ELECTRONICS TECH