CN102931964B - Start control circuit - Google Patents
Start control circuit Download PDFInfo
- Publication number
- CN102931964B CN102931964B CN201210436885.0A CN201210436885A CN102931964B CN 102931964 B CN102931964 B CN 102931964B CN 201210436885 A CN201210436885 A CN 201210436885A CN 102931964 B CN102931964 B CN 102931964B
- Authority
- CN
- China
- Prior art keywords
- resistance
- circuit
- diode
- audion
- electric capacity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Electronic Switches (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of start control circuit, the starting-up signal port triggered including low level；For the pulse generating circuit of output pulse signal when remaining battery is connected；And the on-off circuit being held on when receiving described pulse signal, two ports of described on-off circuit respectively at being connected with described starting-up signal port and described pulse generating circuit, another port ground connection of described on-off circuit.Start control circuit provided by the present invention, as long as the good just Auto Power On of battery terminal contact, not only can provide the user operational facility, save operating procedure and available machine time, still prevent starting key and pressed the damage caused by multi-frequency.
Description
Technical field
The present invention relates to electronic technology field, particularly relate to the start control circuit of mobile terminal.
Background technology
The mobile terminal-opening control circuit of prior art, be both provided with starting-up signal port (PowerOn) and
Starting key switchs, and described starting-up signal port (PowerOn) is connected with baseband chip, when user presses
During key, described starting key turns on, and now the level on starting-up signal port (PowerOn) is pulled low,
So baseband chip just can detect that the low level on starting-up signal port (PowerOn), thus controls mobile
Enter starting procedure eventually.
But such start control circuit, needs user after installing battery, also to carry out starting key
Operation can realize start, especially when mobile terminal receives collision, falls, distorts or jolt, causes electricity
Pond loose contact and power down, mobile terminal thus shuts down, even if after battery recovery connects, mobile terminal still will not
Auto Power On, and need user's Manual press starting key can realize start.So, not only cause the user
Operation and the trouble used, but also it is unfavorable for extending service life of starting key.If there being one to open
Machine control circuit, as long as the good just Auto Power On of battery terminal contact, not only can provide the user operational facility,
Save operating procedure and available machine time, still prevent starting key and pressed the damage caused by multi-frequency.
Summary of the invention
It is an object of the invention to provide a kind of start control circuit.
Start control circuit provided by the present invention, the starting-up signal port triggered including low level；For when it
The pulse generating circuit of output pulse signal when remaining battery is connected；And keep when receiving described pulse signal
Conducting on-off circuit, two ports of described on-off circuit respectively at described starting-up signal port and described arteries and veins
Punching occurs circuit to be connected, another port ground connection of described on-off circuit.
The start control circuit that the present invention provides, also includes the delay switching circuit with ON time；Described switch electricity
Two ports on road respectively at being connected with one end of described delay switching circuit and described pulse generating circuit, described in open
Close another port ground connection of circuit；The other two ends of described delay switching circuit connect described starting-up signal port respectively
With mobile terminal power supply.
Described on-off circuit is NPN type the first audion that turn-on voltage is less than described pulse signal voltage value,
Its base stage is connected with described pulse generating circuit；Its source ground；Its colelctor electrode connects described starting-up signal end
Mouthful.
Described pulse generating circuit includes the first electric capacity, the first diode, the first resistance and the second resistance；Described
The positive pole of the first electric capacity is for being connected with battery and one end of negative pole and the first resistance is connected；Described first electricity
The other end of resistance is connected with the described base stage of the first audion or the grid of transistor；Described second resistance one end
With the described base stage of the first audion or the grid of transistor is connected and other end ground connection；Described first diode
Plus earth and negative pole are connected with the negative pole of described first electric capacity.
Described delay switching circuit includes the second electric capacity, the second diode, the 3rd resistance, the 4th resistance and conducting voltage
Value is less than the second audion of the electric power output voltage value of mobile terminal；The emitter stage of described second audion and institute
The collector circuit stating the first audion connects；The colelctor electrode of described second audion connects described starting-up signal end
Mouthful；Described second diode cathode connects power supply and one end of negative pole described 3rd resistance of connection of mobile terminal；
The other end of described 3rd resistance connects the base stage of described second audion；Described second electric capacity one end ground connection and another
One end connects the negative pole of described second diode；Described 4th resistance one end ground connection and the other end connect described second
The base stage of audion.
Described first diode and described second diode are Zener diode.
Described first electric capacity and the second electric capacity are 2.2 microfarads；Described first resistance is 2.2 kilo-ohms；Described
Two resistance are 100 kilo-ohms；Described three resistance are 15 kilo-ohms；Described 4th resistance is 200 kilo-ohms.
Described on-off circuit is the first metal-oxide-semiconductor that turn-on voltage is less than described pulse signal voltage value, its grid
It is connected with described pulse generating circuit；Its source ground；And its drain electrode connects described starting-up signal port.
Described delay switching circuit includes the second electric capacity, the second diode, the 3rd resistance, the 4th resistance and conducting voltage
Value is less than the second metal-oxide-semiconductor of the electric power output voltage value of mobile terminal；The source electrode of described second metal-oxide-semiconductor is with described
The drain circuit of the oneth MOS connects；The drain electrode of described second metal-oxide-semiconductor connects described starting-up signal port；Described
Second diode cathode connects power supply and one end of negative pole described 3rd resistance of connection of mobile terminal；Described 3rd
The other end of resistance connects the grid of described second metal-oxide-semiconductor；Described second electric capacity one end ground connection and the other end connect
The negative pole of described second diode；Described 4th resistance one end ground connection and the other end connect described second metal-oxide-semiconductor
Grid.Described mobile terminal power supply is VDD18 or VDD28.
Start control circuit provided by the present invention, as long as the good just Auto Power On of battery terminal contact, can be not only to use
Family provides operational facility, saves operating procedure and available machine time, still prevent starting key by multi-frequency by
The damage that pressure causes.
Accompanying drawing explanation
The structural representation of the start control circuit that Fig. 1 provides for embodiment one；
The circuit diagram of the start control circuit that Fig. 2 provides for embodiment one；
The structural representation of the start control circuit that Fig. 3 provides for embodiment two；
The circuit diagram of the start control circuit that Fig. 4 provides for embodiment two.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, real below in conjunction with the present invention
Execute the accompanying drawing in example, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that institute
The embodiment described is a part of embodiment of the present invention rather than whole embodiments.Based on the reality in the present invention
Execute example, the every other enforcement that those of ordinary skill in the art are obtained under not making creative work premise
Example, broadly falls into the scope of protection of the invention.
Embodiment one
As it is shown in figure 1, the present embodiment provides a kind of start control circuit, the starting-up signal triggered including low level
Port (PowerOn), it is characterised in that: also include for the output pulse signal when remaining battery is connected
Pulse generating circuit；And the on-off circuit being held on when receiving described pulse signal, described switch electricity
Two ports on road respectively at being connected with described starting-up signal port and described pulse generating circuit, described switch
Another port ground connection of circuit.It will be understood by those skilled in the art that when described pulse generating circuit and power supply
After realizing electrical connection, producing described pulse signal, described on-off circuit keeps leading under the control of this impulse circuit
Logical state, is achieved that described starting-up signal port ground connection, the most described starting-up signal port is low level, from
And trigger mobile terminal and enter starting procedure.So, as long as being achieved that described battery keeps good connection, use
Family just can be with Auto Power On without operating starting key again.
As in figure 2 it is shown, described on-off circuit is that conducting voltage VBE1 value is less than described pulse signal voltage value
NPN type the first audion Q1, its base stage is connected with described pulse generating circuit；Its grounded emitter；Its collection
Electrode connects described starting-up signal port.
Described on-off circuit can also is that conducting voltage VBE1 value is less than the first of described pulse signal voltage value
Metal-oxide-semiconductor (field effect transistor, Metal Oxid Oemiconductor), its grid and described pulse generating circuit
It is connected；Its source ground；And its drain electrode connects described starting-up signal port.
It will be understood by those skilled in the art that described first audion Q1 or the conducting voltage of the first metal-oxide-semiconductor
VBE1 value is both less than described pulse voltage value, as long as battery connects good, described pulse generating circuit exports institute
State pulse signal, it is possible to control described first audion Q1 and the conducting of the first metal-oxide-semiconductor, it is achieved start believed
Number port is down for low level, thus controls mobile terminal and enter starting procedure.
As in figure 2 it is shown, described pulse generating circuit includes the first electric capacity C1, the first diode D1, the first electricity
Resistance R1 and the second resistance R2；The positive pole of described first electric capacity C1 is for being connected and negative pole and first with battery
One end of resistance R1 is connected；The other end of described first resistance R1 and the base stage of described first audion Q1
Or the grid of transistor is connected；The base stage of described second resistance R2 one end and described first audion Q1 or crystalline substance
The grid of body pipe is connected and other end ground connection；Described first diode D1 plus earth and negative pole and described the
The negative pole of one electric capacity C1 is connected.It will be understood by those skilled in the art that when described battery and the present embodiment institute
When the start control circuit provided realizes circuit connection, the rear end of described first electric capacity C1 can produce positive pulse letter
Number, owing to the conducting voltage VBE1 value of the first audion Q1 selected or the first metal-oxide-semiconductor is less than this pulse signal
Magnitude of voltage, as long as therefore battery realizes circuit with described start control circuit and is connected, described first audion
Q1 or the first metal-oxide-semiconductor are maintained for conducting, and described starting-up signal port is grounded, thus triggers mobile terminal
Enter starting procedure.
It will be understood by those skilled in the art that described first electric capacity C1, the first diode D1, the first resistance R1
Different with the parameter of the second resistance R2, the magnitude of voltage of described pulse signal is different.Generally, battery of mobile terminal
Output voltage be 3.6V to 4.2V, the present embodiment select the first electric capacity C1 of 2.2UF, the of 2.2 kilo-ohms
One resistance R1, the second resistance R2 of 100 kilo-ohms；Described first diode D1 selects Zener diode；Use
Conducting voltage VBE1 is the first audion Q1 or first metal-oxide-semiconductor of 0.6V；The pulse signal so produced
Magnitude of voltage is more than 1V, it is ensured that the magnitude of voltage of pulse signal is more than conducting voltage VBE1 value.
Embodiment two
As it is shown on figure 3, the present embodiment provides a kind of start control circuit preventing instant power-down, including low level
The starting-up signal port (PowerOn) triggered, it is characterised in that: also include for being connected with battery when it
Time output pulse signal pulse generating circuit；The on-off circuit being held on when receiving described pulse signal；
And there is the delay switching circuit of ON time；Two ports of described on-off circuit respectively at described delay switching circuit
One end and described pulse generating circuit be connected, another port ground connection of described on-off circuit；Described in limited time
The other two ends of circuit connect described starting-up signal port and mobile terminal power supply respectively.Those skilled in the art can
To understand, tend to remain on when delay switching circuit is in its ON time, now turn on such as described on-off circuit,
Achieve that described starting-up signal port ground connection, the most described starting-up signal port is low level, thus triggers shifting
Dynamic terminal enters starting procedure.When delay switching circuit is beyond its ON time, described delay switching circuit is non-conduction shape
State, whether the conducting of the most described on-off circuit turns on, and all cannot drag down the level of described starting-up signal port,
So, it is achieved that when mobile terminal power down time is less than described ON time T, can be by connecting battery certainly
Dynamic start；And power down time ON time T as described in exceeded, then cannot Auto Power On.So, both can protect
Card, due to mobile phone Auto Power On after the collision of mobile phone, the short time power down caused of falling, distort or jolt, also may be used
When again installing battery with guarantee user after transfering to the battery long period, mobile phone remains turned off state, carries for user
Convenient and the impression for more operation.
As shown in Figure 4, described on-off circuit is that conducting voltage VBE1 value is less than described pulse signal voltage value
First audion Q1, described first audion Q1 is NPN type, and its base stage is connected with described pulse generating circuit
Connect；Its grounded emitter；Its colelctor electrode connects described delay switching circuit.
Described on-off circuit can also is that conducting voltage VBE1 value is less than the first of described pulse signal voltage value
Metal-oxide-semiconductor (field effect transistor, Metal Oxid Oemiconductor), its grid and described pulse generating circuit
It is connected；Its source ground；And its drain electrode connects described delay switching circuit.
It will be understood by those skilled in the art that described first audion Q1 or the conducting voltage of the first metal-oxide-semiconductor
VBE1 value is both less than described pulse voltage value, as long as battery connects good, described pulse generating circuit exports institute
State pulse signal, it is possible to control described first audion Q1 and the conducting of the first metal-oxide-semiconductor, if now in limited time
Circuit is conducting state, then can realize starting-up signal port down for low level, thus controls mobile terminal and enter
Enter starting procedure.
As shown in Figure 4, described pulse generating circuit includes the first electric capacity C1, the first diode D1, the first electricity
Resistance R1 and the second resistance R2；The positive pole of described first electric capacity C1 is for being connected and negative pole and first with battery
One end of resistance R1 is connected；The other end of described first resistance R1 and the base stage of described first audion Q1
Or the grid of transistor is connected；The base stage of described second resistance R2 one end and described first audion Q1 or crystalline substance
The grid of body pipe is connected and other end ground connection；Described first diode D1 plus earth and negative pole and described the
The negative pole of one electric capacity C1 is connected.It will be understood by those skilled in the art that when described battery and the present embodiment institute
When the start control circuit provided realizes circuit connection, the rear end of described first electric capacity C1 can produce positive pulse letter
Number, owing to the conducting voltage VBE1 value of the first audion Q1 selected or the first metal-oxide-semiconductor is less than this pulse signal
Magnitude of voltage, as long as therefore battery realizes circuit with described start control circuit and is connected, described first audion
Q1 or the first metal-oxide-semiconductor are maintained for conducting, if now delay switching circuit is conducting state, described starting-up signal end
Mouth can be grounded, thus trigger mobile terminal and enter starting procedure.
It will be understood by those skilled in the art that described first electric capacity C1, the first diode D1, the first resistance R1
Different with the parameter of the second resistance R2, the magnitude of voltage of described pulse signal is different.Generally, battery of mobile terminal
Output voltage be 3.6V to 4.2V, the present embodiment select the first electric capacity C1 of 2.2UF, the of 2.2 kilo-ohms
One resistance R1, the second resistance R2 of 100 kilo-ohms；Described first diode D1 selects Zener diode；Use
Conducting voltage VBE1 is the first audion Q1 or first metal-oxide-semiconductor of 0.6V；The pulse signal so produced
Magnitude of voltage is more than 1V, it is ensured that the magnitude of voltage of pulse signal is more than conducting voltage VBE1 value.
Described delay switching circuit includes the second electric capacity C2, the second diode D2, the 3rd resistance R3, the 4th resistance R4
The second audion Q2 of electric power output voltage value VDD of mobile terminal it is less than with turn-on voltage VBE2；Described
The emitter stage of the second audion Q2 is connected with the collector circuit of described first audion Q1；Described two or three pole
The colelctor electrode of pipe Q2 connects described starting-up signal port；Described second diode D2 positive pole connects mobile terminal
Power supply and negative pole connect one end of described 3rd resistance R3；The other end of described 3rd resistance R3 connects described the
The base stage of two audion Q2；Described second electric capacity C2 one end ground connection and the other end connect described second diode
The negative pole of D2；Described 4th resistance R4 one end ground connection and the other end connect the base stage of described second audion Q2.
It will be understood by those skilled in the art that under mobile terminal-opening state, the power vd D of mobile terminal is through institute
State the second diode D2 to described second electric capacity C2 charging, until described second electric capacity C2 voltage be increased to
The equal VC=VDD of magnitude of voltage of mobile terminal power supply output.After mobile terminal power down, electric capacity C1 is through described
Three resistance R3 and the 4th resistance R4 discharge over the ground, and final C1 voltage reduces to 0V.Those skilled in the art are permissible
Understand, when the magnitude of voltage VC of described second electric capacity C2 is more than conducting voltage VBE2 of described second audion Q2
Time, described second audion Q2 will be held on, and the most such as connects battery, described first audion Q1
Or first metal-oxide-semiconductor conducting, it is possible to realize described starting-up signal port ground connection；When described second electric capacity C2's
When magnitude of voltage VC elapsed time T drops to VC=VBE2, described second audion Q2 will be no longer turned on, now
No matter whether battery connects, and all cannot be realized by the conducting of described first audion Q1 or the first metal-oxide-semiconductor
Auto Power On.Thus achieve, when the power down time of mobile terminal is less than T, can the function of Auto Power On,
Solve the skill needing manually to start shooting after user is collided at mobile terminal, falls, distorts, jolts or shakes
Art problem.
Described second audion Q2 can also replace with described second metal-oxide-semiconductor, its grid and described 3rd resistance
R3 and the 4th resistance R4 is connected；The colelctor electrode of its source electrode and described first audion Q1 or the first metal-oxide-semiconductor
Drain electrode be connected；Its drain electrode connects described starting-up signal port.
Described mobile terminal power supply can be VDD18 or VDD28.
It will be understood by those skilled in the art that described ON time T along with described electric power output voltage VDD, with
And the second electric capacity C2, the 3rd resistance R3 and the parameter of the 4th resistance R4 and change, as described second electric capacity C2
The resistance of capacitance, the resistance of the 3rd resistance R3 or the 4th resistance R4 the biggest time, described ON time T is the biggest.
Here the second electric capacity C2 of 2.2UF is used；The 3rd resistance R3 of 15 kilo-ohms and the 4th resistance of 200 kilo-ohms
R4；Described second diode D2 uses Zener diode.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；
Although being described in detail the present invention with reference to previous embodiment, those of ordinary skill in the art should manage
Solve: the technical scheme described in foregoing embodiments still can be modified by it, or to wherein part skill
Art feature carries out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from this
Invent the spirit and scope of each embodiment technical scheme.
Claims (5)
1. a start control circuit, it is characterised in that: include starting-up signal port, pulse that low level triggers
There is circuit, delay switching circuit and on-off circuit；Described on-off circuit is that conducting voltage (VBE1) value is less than pulse
The NPN type the first audion (Q1) of signal voltage value, its base stage is connected with described pulse generating circuit；Its
Source ground；Its colelctor electrode connects described starting-up signal port；Described pulse generating circuit includes the first electric capacity
(C1), the first diode (D1), the first resistance (R1) and the second resistance (R2)；Described first electric capacity
(C1) positive pole is for being connected with battery and one end of negative pole and the first resistance (R1) is connected；Described
The other end of one resistance (R1) is connected with the described base stage of the first audion (Q1) or the grid of transistor；
Described second resistance (R2) one end is connected with the described base stage of the first audion (Q1) or the grid of transistor
And other end ground connection；Described first diode (D1) plus earth and negative pole and described first electric capacity (C1)
Negative pole is connected；Described delay switching circuit includes the second electric capacity (C2), the second diode (D2), the 3rd resistance
(R3), the 4th resistance (R4) and turn-on voltage (VBE2) are less than the electric power output voltage value of mobile terminal
(VDD) the second audion (Q2)；The emitter stage of described second audion (Q2) and described one or three pole
The collector circuit of pipe (Q1) connects；The colelctor electrode of described second audion (Q2) connects described starting-up signal
Port；Described second diode (D2) positive pole connects power supply and negative pole described 3rd resistance of connection of mobile terminal
(R3) one end；The other end of described 3rd resistance (R3) connects the base stage of described second audion (Q2)；
Described second electric capacity (C2) one end ground connection and the other end connect the negative pole of described second diode (D2)；Described
4th resistance (R4) one end ground connection and the other end connect the base stage of described second audion (Q2).
2. start control circuit as claimed in claim 1, it is characterised in that: described first diode (D1)
It is Zener diode with described second diode (D2).
3. start control circuit as claimed in claim 2, it is characterised in that: described first electric capacity and the second electricity
Hold and be 2.2 microfarads；Described first resistance is 2.2 kilo-ohms；Described second resistance is 100 kilo-ohms；Described three
Resistance is 15 kilo-ohms；Described 4th resistance is 200 kilo-ohms.
4. start control circuit as claimed in claim 1, it is characterised in that: described on-off circuit is electric conduction
Pressure (VBE1) value is less than the first metal-oxide-semiconductor of described pulse signal voltage value, its grid and described pulse generation electricity
Road is connected；Its source ground；And its drain electrode connects described starting-up signal port.
5. a start control circuit, it is characterised in that: include starting-up signal port, arteries and veins that low level triggers
There is circuit, delay switching circuit and on-off circuit in punching；Described on-off circuit is that conducting voltage VBE1 value is less than pulse
First metal-oxide-semiconductor of signal voltage value, its grid is connected with described pulse generating circuit；Its source ground；And
Its drain electrode connects described delay switching circuit；Described pulse generating circuit includes the first electric capacity (C1), the first diode
(D1), the first resistance (R1) and the second resistance (R2)；The positive pole of described first electric capacity (C1) for
Battery is connected and one end of negative pole and the first resistance (R1) is connected；Another of described first resistance (R1)
End is connected with the base stage of the first audion (Q1) or the grid of transistor；Described second resistance (R2) one end
With the described base stage of the first audion (Q1) or the grid of transistor is connected and other end ground connection；Described first
Diode (D1) plus earth and negative pole are connected with the negative pole of described first electric capacity (C1)；Described electricity in limited time
Road includes the second electric capacity (C2), the second diode (D2), the 3rd resistance (R3), the 4th resistance (R4)
The second metal-oxide-semiconductor of the electric power output voltage value (VDD) of mobile terminal it is less than with turn-on voltage (VBE2)；
The source electrode of described second metal-oxide-semiconductor is connected with the drain circuit of a described MOS；The drain electrode of described second metal-oxide-semiconductor
Connect described starting-up signal port；Described second diode (D2) positive pole connects power supply and the negative pole of mobile terminal
Connect one end of described 3rd resistance (R3)；The other end of described 3rd resistance (R3) connects described second
The grid of metal-oxide-semiconductor；Described second electric capacity (C2) one end ground connection and the other end connect described second diode (D2)
Negative pole；Described 4th resistance (R4) one end ground connection and the other end connect the grid of described second metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210436885.0A CN102931964B (en) | 2012-11-06 | 2012-11-06 | Start control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210436885.0A CN102931964B (en) | 2012-11-06 | 2012-11-06 | Start control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102931964A CN102931964A (en) | 2013-02-13 |
| CN102931964B true CN102931964B (en) | 2016-10-05 |
Family
ID=47646693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210436885.0A Active CN102931964B (en) | 2012-11-06 | 2012-11-06 | Start control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102931964B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330984B (en) * | 2013-09-25 | 2016-10-05 | 广州三星通信技术研究有限公司 | Prevent portable terminal and the method thereof of Auto Power On |
| CN113467333B (en) * | 2021-07-28 | 2022-12-20 | 深圳市广和通无线股份有限公司 | Startup control circuit and startup control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1782954A (en) * | 2004-11-30 | 2006-06-07 | 鸿富锦精密工业（深圳）有限公司 | Computer system with re-starting control circuit |
| CN101025636A (en) * | 2006-02-24 | 2007-08-29 | 李上灿 | Transformer coupled purallel switch type voltage-stabilized source |
| CN101388986A (en) * | 2008-09-28 | 2009-03-18 | 深圳创维－Rgb电子有限公司 | Power-on pulse eliminating circuit |
| CN101626227A (en) * | 2009-07-31 | 2010-01-13 | Tcl通力电子（惠州）有限公司 | Circuit for forced shutdown |
-
2012
- 2012-11-06 CN CN201210436885.0A patent/CN102931964B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1782954A (en) * | 2004-11-30 | 2006-06-07 | 鸿富锦精密工业（深圳）有限公司 | Computer system with re-starting control circuit |
| CN101025636A (en) * | 2006-02-24 | 2007-08-29 | 李上灿 | Transformer coupled purallel switch type voltage-stabilized source |
| CN101388986A (en) * | 2008-09-28 | 2009-03-18 | 深圳创维－Rgb电子有限公司 | Power-on pulse eliminating circuit |
| CN101626227A (en) * | 2009-07-31 | 2010-01-13 | Tcl通力电子（惠州）有限公司 | Circuit for forced shutdown |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102931964A (en) | 2013-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205489605U (en) | Time delay starting circuit and mobile unit | |
| CN214153992U (en) | Control circuit for realizing load switch control and detection protection of single-chip microcomputer IO port | |
| CN205318129U (en) | Time -delay control circuit | |
| CN101783503B (en) | Overvoltage protection circuit | |
| CN102931964B (en) | Start control circuit | |
| CN207691419U (en) | A kind of circuit released for bus-bar charge | |
| CN202906437U (en) | Input undervoltage protection circuit | |
| CN203313051U (en) | Efficient release circuit structure | |
| CN210780130U (en) | Power-off control circuit | |
| CN204859144U (en) | Auto -lock switch circuit | |
| CN204180037U (en) | Reset control circuit and electronic equipment | |
| CN208971480U (en) | The DC power supply switch circuit that can be rapidly switched off and the electronic equipment using it | |
| CN207651425U (en) | A kind of relay drive circuit with delay function | |
| CN110350902A (en) | A kind of Anti-misoperation circuit and anti-misoperation apparatus | |
| CN203813867U (en) | Reset circuit and television set | |
| CN106533409B (en) | Zero power consumption control device of dust collection cup lithium battery | |
| CN106648012B (en) | One kind stirring control switch electromechanics road | |
| CN203933582U (en) | A kind of switching circuit that reduces shutdown electric leakage | |
| CN210572482U (en) | Power supply voltage detection circuit | |
| CN202995351U (en) | Buzzer and switch-assembly multiplexing system | |
| CN203661026U (en) | Light-operated touch circuit | |
| CN209184578U (en) | A kind of mechanical triggering self-locking electronic switching circuit | |
| CN209390032U (en) | A kind of ON-OFF control circuit based on Schmidt trigger | |
| CN202886881U (en) | Full-hardware startup and shutdown circuit | |
| CN203398743U (en) | Safe starting circuit with self-locking function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |