CN203522679U - Reset circuit - Google Patents
Reset circuit Download PDFInfo
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- CN203522679U CN203522679U CN201320685354.5U CN201320685354U CN203522679U CN 203522679 U CN203522679 U CN 203522679U CN 201320685354 U CN201320685354 U CN 201320685354U CN 203522679 U CN203522679 U CN 203522679U
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Abstract
The utility model belongs to the technical field of an electronic circuit and especially relates to a reset circuit. The reset circuit comprises a VCHG high-level terminal, a resistor R212, a resistor R213, a resistor R215, a capacitor C223, a transistor Q204, a MOS transistor Q205, a diode D1, a startup and shutdown key K1 and a reset interface. The reset circuit is designed by utilizing simple and cheap transistors; a charging power source is utilized as a trigger power source for resetting; the startup and shutdown key of an electronic product is utilized as a switch for resetting; and the reset circuit is reliable and effective, and low in cost.
Description
Technical field
The utility model belongs to electronic circuit technology field, relates in particular to a kind of reset circuit.
Background technology
The development of advancing by leaps and bounds along with electronic technology, the electronic products such as intelligent machine, MP3, PAD, Baffle Box of Bluetooth are seen everywhere, wherein greatly cannot power-off between the electronic system of electronic product and battery, this causes electronic product cannot reset by power-off means when crashing.In order to make electronic product can reset and restart when crashing, must add special reset circuit, conventionally adding reset circuit has following several scheme: 1, separate physical key switch resets; 2,, by reset chip, use that key is multiplexing to be resetted; 3, software reset.
For the first scheme, need product structure additionally to open reset hole, this has affected the overall appearance of electronic product on the one hand, and needs extra switch key to increase cost, especially for some, has fixed in advance the product of structure, and this scheme is infeasible especially.For first scheme, be the scheme that most electronic product is used, due to scheme mature and reliable, by most of electronic products, used, but need to increase extra reset chip, greatly increased the hardware cost of electronic product.The third scheme is generally in software code, to use the form of WATCHDOG, when electronic product crashes, places certain hour, and system just can be restarted, although this scheme cheapness allows user face, crashes at one's wit's endly, greatly affects user and experiences.
Utility model content
Given this, the utility model provides a kind of neither to be needed additionally to offer reset hole and not to need again the reset circuit of extra reset chip, and this reset circuit is reliably effective, with low cost.
Technical solutions of the utility model:
A reset circuit, comprises charge power supply VCHG high level end, resistance R 212, resistance R 213, resistance R 215, capacitor C 223, triode Q204, metal-oxide-semiconductor Q205, diode D1, switch switch K1 and reseting interface, one end of described VCHG high level end and resistance R 212, one end of resistance R 213 connects, one end of the other end of resistance R 213 and capacitor C 223, the base stage of triode Q204 connects, the grounded emitter of the other end of capacitor C 223 and triode Q204, the collector electrode of the other end of resistance R 212 and triode Q204, the grid of metal-oxide-semiconductor Q205, one end of resistance R 215 connects, the other end ground connection of resistance R 215, the drain electrode of metal-oxide-semiconductor Q205 is connected with described reseting interface, the source electrode of metal-oxide-semiconductor Q205 is connected with the positive terminal of described diode D1, the negative pole end of described diode D1 is connected with one end of described switch switch K1, the other end ground connection of described switch switch K1.
Further, described triode Q204 is MMBT3904 model.
Further, described metal-oxide-semiconductor Q205 is DMN601K model.
Further, described diode D1 is RB521S-30 model.
Further, described capacitor C 223 is 10uF.
Further, described resistance R 212 is 100K, and described resistance R 213 is 330K, and described resistance R 215 is 100K.
The utility model beneficial effect:
Reset circuit described in the utility model, the transistor design reset circuit of employing cheap and simple, utilizes charge power supply as the triggering power supply resetting, and utilizes the switch switch of electronic product as the switch resetting, and reset circuit is reliably effective, with low cost.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model.
Embodiment
In order to illustrate in greater detail the technical solution of the utility model, below in conjunction with accompanying drawing, the utility model is described in more detail.
Referring to Fig. 1, Fig. 1 is reset circuit figure of the present utility model.The utility model adopts the metal-oxide-semiconductor design reset circuit of cheap and simple, utilizes charge power supply as the triggering power supply resetting, and utilizes the switch switch of electronic product as the switch resetting, and physical circuit is referring to Fig. 1:
A reset circuit, comprises charge power supply VCHG high level end, resistance R 212, R213, R215, capacitor C 223, triode Q204, metal-oxide-semiconductor Q205, diode D1, switch switch K1 and reseting interface, one end of described VCHG high level end and resistance R 212, one end of resistance R 213 connects, one end of the other end of resistance R 213 and capacitor C 223, the base stage of triode Q204 connects, the grounded emitter of the other end of capacitor C 223 and triode Q204, the collector electrode of the other end of resistance R 212 and triode Q204, the grid of metal-oxide-semiconductor Q205, one end of resistance R 215 connects, the other end ground connection of resistance R 215, the drain electrode of metal-oxide-semiconductor Q205 is connected with described reseting interface, the source electrode of metal-oxide-semiconductor Q205 is connected with the positive terminal of described diode D1, the negative pole end of described diode D1 is connected with one end of described switch switch K1, the other end ground connection of described switch switch K1.
The principle of the utility model reset circuit is: when electronic product crashes, with the head of a household, press switch switch K1, turn on-switch switch K1; Then insert charger charging, charge power supply VCHG high level end can be given circuit supply; Moment at VCHG high level end to circuit supply, due to capacitor C 223 chargings, cause the base stage of triode Q204 in low level, triode Q204 cut-off; Moment at VCHG high level end to circuit supply, the grid of metal-oxide-semiconductor Q205 is drawn high as high level, and metal-oxide-semiconductor Q205 conducting make reseting interface be pulled down to ground by switch switch K1, thereby system reset is restarted; Capacitor C 223 is full of after electricity, the base stage of triode Q204 is drawn high, triode Q204 conducting, now the grid of metal-oxide-semiconductor Q205 is dragged down, metal-oxide-semiconductor Q205 cut-off, the PIN pin that now resets recovers the pull-up state of acquiescence and system is normally moved, and affected by switch switch K1, and doing is like this that switching on and shutting down may cause system reset problem when charging normal.Add diode D1, on the PIN pin that can prevent from starting shooting, draw level exceed reset PIN pin on the electric current that produces while drawing level pour in down a chimney problem.
In reset circuit described in the utility model, triode Q204 is MMBT3904 model, and metal-oxide-semiconductor Q205 is DMN601K model, diode D1 is RB521S-30 model, and capacitor C 223 is 10uF, and resistance R 212 is 100K, resistance R 213 is 330K, and resistance R 215 is 100K.
The utility model adopts transistor and the capacitance resistance ware of cheap and simple to design reliable and effective reset circuit, need on electronic product, additionally not offer reset hole, does not also need extra reset chip, with low cost, reliably effective.
Below described in conjunction with specific embodiments know-why of the present utility model, these are described is in order to explain principle of the present utility model, and can not be interpreted as by any way the restriction to the utility model protection range.Explanation based on herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present utility model, within these modes all will fall into protection range of the present utility model.
Claims (6)
1. a reset circuit, is characterized in that, comprises charge power supply VCHG high level end, resistance R 212, resistance R 213, resistance R 215, capacitor C 223, triode Q204, metal-oxide-semiconductor Q205, diode D1, switch switch K1 and reseting interface, one end of described VCHG high level end and resistance R 212, one end of resistance R 213 connects, one end of the other end of resistance R 213 and capacitor C 223, the base stage of triode Q204 connects, the grounded emitter of the other end of capacitor C 223 and triode Q204, the collector electrode of the other end of resistance R 212 and triode Q204, the grid of metal-oxide-semiconductor Q205, one end of resistance R 215 connects, the other end ground connection of resistance R 215, the drain electrode of metal-oxide-semiconductor Q205 is connected with described reseting interface, the source electrode of metal-oxide-semiconductor Q205 is connected with the positive terminal of described diode D1, the negative pole end of described diode D1 is connected with one end of described switch switch K1, the other end ground connection of described switch switch K1.
2. a kind of reset circuit according to claim 1, is characterized in that, described triode Q204 is MMBT3904 model.
3. a kind of reset circuit according to claim 1, is characterized in that, described metal-oxide-semiconductor Q205 is DMN601K model.
4. a kind of reset circuit according to claim 1, is characterized in that, described diode D1 is RB521S-30 model.
5. a kind of reset circuit according to claim 1, is characterized in that, described capacitor C 223 is 10uF.
6. a kind of reset circuit according to claim 1, is characterized in that, described resistance R 212 is 100K, and described resistance R 213 is 330K, and described resistance R 215 is 100K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320685354.5U CN203522679U (en) | 2013-10-30 | 2013-10-30 | Reset circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320685354.5U CN203522679U (en) | 2013-10-30 | 2013-10-30 | Reset circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203522679U true CN203522679U (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320685354.5U Expired - Fee Related CN203522679U (en) | 2013-10-30 | 2013-10-30 | Reset circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203522679U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825593A (en) * | 2014-03-18 | 2014-05-28 | 青岛歌尔声学科技有限公司 | Reset signal generating circuit and electronic equipment |
| CN107276623A (en) * | 2017-07-29 | 2017-10-20 | 深圳中集电商物流科技有限公司 | A kind of express delivery cabinet and its control circuit, method |
| WO2021212718A1 (en) * | 2020-04-23 | 2021-10-28 | 深圳市豪恩声学股份有限公司 | Wireless earbud resetting circuit, wireless earbud, and resetting method |
-
2013
- 2013-10-30 CN CN201320685354.5U patent/CN203522679U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825593A (en) * | 2014-03-18 | 2014-05-28 | 青岛歌尔声学科技有限公司 | Reset signal generating circuit and electronic equipment |
| CN107276623A (en) * | 2017-07-29 | 2017-10-20 | 深圳中集电商物流科技有限公司 | A kind of express delivery cabinet and its control circuit, method |
| CN107276623B (en) * | 2017-07-29 | 2023-01-24 | 深圳市丰巢电商物流科技有限公司 | Express cabinet and control circuit and method thereof |
| WO2021212718A1 (en) * | 2020-04-23 | 2021-10-28 | 深圳市豪恩声学股份有限公司 | Wireless earbud resetting circuit, wireless earbud, and resetting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI ZHUOYI TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHANGHAI TYD ELECTRONIC TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 200233 Guiping Road, Xuhui District, No. 391, building 20, floor 3, Patentee after: Shanghai Zhuo Yi Science and Technology Co., Ltd. Address before: 200233 Shanghai City, Xuhui District Guiping road B new Caohejing International Business Center No. 391 20 floor Patentee before: Shanghai TYD Electronic Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20171030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |