CN205427761U - Switching on and shutting down circuit of panel computer - Google Patents
Switching on and shutting down circuit of panel computer Download PDFInfo
- Publication number
- CN205427761U CN205427761U CN201620241868.5U CN201620241868U CN205427761U CN 205427761 U CN205427761 U CN 205427761U CN 201620241868 U CN201620241868 U CN 201620241868U CN 205427761 U CN205427761 U CN 205427761U
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- Prior art keywords
- panel computer
- audion
- feet
- bilateral diode
- electric capacity
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Abstract
The utility model discloses a switching on and shutting down circuit of panel computer, it relates to a switching on and shutting down circuit. 3 feet of bilateral diode connect the button extremely to hold, 3 feet of bilateral diode, 2 the foot connects first electric capacity respectively, first resistance is extremely held, panel computer main control chip's output control signal terminal, 2 feet of bilateral diode connect second resistance respectively, fourth electric capacity to the source electrode of MOS pipe, the ground end, the source electrode of MOS pipe meets panel computer main control chip's output control signal terminal, the grid of MOS pipe connects 2 feet of third resistance to bilateral diode, the drain electrode of MOS pipe connects the parallel circuit of second electric capacity and third electric capacity extremely to hold, 2 feet of bilateral diode respectively with first triode, the collecting electrode of second triode is connected, first triode, the equal ground connection of projecting pole of second triode. The utility model discloses subtract low production costs for the maintainability of panel computer improves, and the practicality is strong.
Description
Technical field
The utility model relates to a kind of on/off circuit, be specifically related to the on/off circuit of a kind of panel computer.
Background technology
Panel computer on/off circuit is typically to be realized by power management chip at present, but the problem that there is high cost, and some power management chip encapsulation welding tray pin-pitch are too small, certain difficulty is brought to the processing of circuit board paster, increase the fraction defective produced, and when a problem occurs, the maintainability of panel computer is the highest, based on this, design the on/off circuit of a kind of novel panel computer or necessary.
Utility model content
For not enough present on prior art, this utility model purpose is to be to provide the on/off circuit of a kind of panel computer, simple in construction, reasonable in design, lower production cost, improve and produce yield, the maintainability making panel computer improves, practical, it is easy to promote the use of.
nullTo achieve these goals，This utility model is to realize by the following technical solutions: the on/off circuit of a kind of panel computer，Including button、Bilateral diode、Metal-oxide-semiconductor、First audion and the second audion，3 feet of bilateral diode connect button to ground end，3 feet of bilateral diode、2 feet connect the first electric capacity respectively、First resistance is to ground end、The output control signal end of panel computer main control chip，2 feet of bilateral diode connect the second resistance respectively、4th electric capacity is to the source electrode of metal-oxide-semiconductor、Ground end，The source electrode of metal-oxide-semiconductor connects the output control signal end of panel computer main control chip，The grid of metal-oxide-semiconductor connects the 3rd resistance to 2 feet of bilateral diode，The drain electrode of metal-oxide-semiconductor connects the parallel circuit of the second electric capacity and the 3rd electric capacity to ground end，2 feet of bilateral diode respectively with the first audion、The colelctor electrode of the second audion connects，First audion、The equal ground connection of emitter stage of the second audion，First audion、The base stage of the second audion connects the 4th resistance respectively、5th resistance is to ground end.
As preferably, described button uses button IT-1207A-250H3.5R, and bilateral diode uses bilateral diode BAT54C-7-F, and metal-oxide-semiconductor uses P-channel field-effect transistor (PEFT) transistor AO3415A, and the first audion, the second audion all use audion MMBT3904.
The beneficial effects of the utility model: the panel computer not having power management chip can be made to realize power on/off function, also the on/off circuit making existing panel computer solves the higher problem of fraction defective on producing, improve and produce yield, decrease the cost of complete machine so that the maintainability of panel computer is greatly improved simultaneously.
Accompanying drawing explanation
This utility model is described in detail below in conjunction with the accompanying drawings with detailed description of the invention；
Fig. 1 is circuit diagram of the present utility model.
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and be easy to understand with effect, below in conjunction with detailed description of the invention, this utility model is expanded on further.
nullWith reference to Fig. 1，This detailed description of the invention is by the following technical solutions: the on/off circuit of a kind of panel computer，Including button SW1、Bilateral diode D1、Metal-oxide-semiconductor Q1、First audion Q2 and the second audion Q3，3 feet of bilateral diode D1 meet button SW1 to ground end，3 feet of bilateral diode D1、2 feet meet the first electric capacity C1 respectively、First resistance R1 is to ground end、The output control signal end of panel computer main control chip，2 feet of bilateral diode D1 meet the second resistance R2 respectively、The source electrode of the 4th electric capacity C4 to metal-oxide-semiconductor Q1、Ground end，The source electrode of metal-oxide-semiconductor Q1 connects the output control signal end of panel computer main control chip，The grid of metal-oxide-semiconductor Q1 connects 2 feet of the 3rd resistance R3 to bilateral diode D1，The drain electrode of metal-oxide-semiconductor Q1 connects the parallel circuit of the second electric capacity C2 and the 3rd electric capacity C3 to ground end，2 feet of bilateral diode D1 respectively with the first audion Q2、The colelctor electrode of the second audion Q3 connects，First audion Q2、The equal ground connection of emitter stage of the second audion Q3，First audion Q2、The base stage of the second audion Q3 meets the 4th resistance R4 respectively、5th resistance R5 is to ground end.
It should be noted that, described button SW1 uses button IT-1207A-250H3.5R, bilateral diode D1 uses bilateral diode BAT54C-7-F, metal-oxide-semiconductor Q1 to use P-channel field-effect transistor (PEFT) transistor AO3415A, the first audion Q2, the second audion Q3 all to use audion MMBT3904.
This detailed description of the invention controls a P-channel field-effect transistor (PEFT) transistor Q1 with a bilateral diode D1 and two transistors Q2, Q3 respectively, and work process is divided into start, standby, standby wakeup, five parts of charging of shutting down and start shooting.
(1) start: long button SW1, the grid of metal-oxide-semiconductor Q1 is dragged down by bilateral diode D1, metal-oxide-semiconductor Q1 is turned on, realize rear class to power, the first audion Q2 conducting is made by main control chip IO output control signal after system start-up, so that metal-oxide-semiconductor Q1 conducting, now can unclamp button SW1, system enters open state；
(2) standby: short button SW1, drag down main control chip IO by bilateral diode D1, main control chip enters holding state after obtaining I/O interrupt signal；
(3) standby wakeup: by short button SW1 after standby, dragging down main control chip IO by bilateral diode D1, chip wakes up up after obtaining I/O interrupt signal, panel computer enters normal boot-strap state；
(4) shutdown: long button SW1, main control chip ejects prompting menu after recognizing off signal, after determining shutdown, main control chip is cancelled the control signal of IO and metal-oxide-semiconductor Q1 is turned off, rear class power-off automatic shutdown；
(5) start charging: when after couple in adapter, input interface providing high level signal to control the second audion Q3 and make metal-oxide-semiconductor Q1 turn on, late-class circuit is powered by power supply, and main control chip is electrically accessed entrance charged state outside automatically recognizing.
This detailed description of the invention increases discrete device and realizes power on/off function, existing conventional flat-panel computer can be made to realize the on/off circuit of discrete device, lower production cost, improve and produce yield, have wide market application foreground.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described.Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description, principle of the present utility model is simply described; on the premise of without departing from this utility model spirit and scope; this utility model also has various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (5)
- null1. the on/off circuit of a panel computer，It is characterized in that，Including button (SW1)、Bilateral diode (D1)、Metal-oxide-semiconductor (Q1)、First audion (Q2) and the second audion (Q3)，3 feet of bilateral diode (D1) connect button (SW1) to ground end，3 feet of bilateral diode (D1)、2 feet connect the first electric capacity (C1) respectively、First resistance (R1) is to ground end、The output control signal end of panel computer main control chip，2 feet of bilateral diode (D1) connect the second resistance (R2) respectively、4th electric capacity (C4) is to the source electrode of metal-oxide-semiconductor (Q1)、Ground end，The source electrode of metal-oxide-semiconductor (Q1) connects the output control signal end of panel computer main control chip，The grid of metal-oxide-semiconductor (Q1) connects the 3rd resistance (R3) to 2 feet of bilateral diode (D1)，The drain electrode of metal-oxide-semiconductor (Q1) connects the second electric capacity (C2) parallel circuit with the 3rd electric capacity (C3) to ground end，2 feet of bilateral diode (D1) respectively with the first audion (Q2)、The colelctor electrode of the second audion (Q3) connects，First audion (Q2)、The equal ground connection of emitter stage of the second audion (Q3)，First audion (Q2)、The base stage of the second audion (Q3) connects the 4th resistance (R4) respectively、5th resistance (R5) is to ground end.
- The on/off circuit of a kind of panel computer the most according to claim 1, it is characterised in that described button (SW1) uses button IT-1207A-250H3.5R.
- The on/off circuit of a kind of panel computer the most according to claim 1, it is characterised in that described bilateral diode (D1) uses bilateral diode BAT54C-7-F.
- The on/off circuit of a kind of panel computer the most according to claim 1, it is characterised in that described metal-oxide-semiconductor (Q1) uses P-channel field-effect transistor (PEFT) transistor AO3415A.
- The on/off circuit of a kind of panel computer the most according to claim 1, it is characterised in that described the first audion (Q2), the second audion (Q3) all use audion MMBT3904.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620241868.5U CN205427761U (en) | 2016-03-28 | 2016-03-28 | Switching on and shutting down circuit of panel computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620241868.5U CN205427761U (en) | 2016-03-28 | 2016-03-28 | Switching on and shutting down circuit of panel computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205427761U true CN205427761U (en) | 2016-08-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620241868.5U Expired - Fee Related CN205427761U (en) | 2016-03-28 | 2016-03-28 | Switching on and shutting down circuit of panel computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205427761U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109495097A (en) * | 2018-12-17 | 2019-03-19 | 成都国星通信有限公司 | A kind of chance taps circuit and its on-off method |
| CN114089837A (en) * | 2021-10-14 | 2022-02-25 | 深圳市华曦达科技股份有限公司 | Control method and device of equipment and computer readable storage medium |
-
2016
- 2016-03-28 CN CN201620241868.5U patent/CN205427761U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109495097A (en) * | 2018-12-17 | 2019-03-19 | 成都国星通信有限公司 | A kind of chance taps circuit and its on-off method |
| CN114089837A (en) * | 2021-10-14 | 2022-02-25 | 深圳市华曦达科技股份有限公司 | Control method and device of equipment and computer readable storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20200328 |