CN219351699U - Electronic product start key reset circuit - Google Patents
Electronic product start key reset circuit Download PDFInfo
- Publication number
- CN219351699U CN219351699U CN202223367505.0U CN202223367505U CN219351699U CN 219351699 U CN219351699 U CN 219351699U CN 202223367505 U CN202223367505 U CN 202223367505U CN 219351699 U CN219351699 U CN 219351699U
- Authority
- CN
- China
- Prior art keywords
- electronic product
- reset circuit
- triode
- switch
- power supply
- 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
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model discloses an electronic product start-up key reset circuit which comprises a lithium battery BAT1 used for supplying power to an electronic product, wherein the lithium battery BAT1 is connected with a charging power supply and a power supply, a switch K1, a MOS (metal oxide semiconductor) tube Q1, triodes Q2 and Q3, a voltage stabilizing tube U1, diodes D1 and D2, a capacitor C4 and resistors R3 and R4 are connected between the lithium battery BAT1 and the power supply, one end of the switch K1 is connected with the voltage stabilizing tube U1 and then connected with the electronic product through the diodes D1 and D2 respectively, the other end of the switch K1 is connected with the lithium battery BAT1 and then connected with the source electrode of the MOS tube Q1, the drain electrode of the MOS tube Q1 is connected with the power supply, the grid electrode of the MOS tube Q1 is connected with the collector electrode of the triode Q3 and then connected between the diode D2 and the electronic product, the base electrode of the triode Q3 is connected with one end of the capacitor C4 and then connected with the resistors R3 and R4, and the other end of the capacitor C4 is connected with the other end of the resistor R4 and then grounded. The utility model realizes the reset through the switch without waiting for the battery to run out.
Description
Technical Field
The utility model relates to a reset circuit of a start key of an electronic product, which is applicable to the technical field of switches.
Background
At present, many small electronic products in the market do not need to be turned on or off by a toggle switch (because the volume of the toggle switch is larger), but use key-type on or off, such as a mobile phone, a flat plate, a small sound box, an earphone, a shaver and the like, are built-in lithium batteries; some electronic products have only one key, double-key reset cannot be realized, and when the products are dead, even the watchdog cannot reset, the electronic products can be charged only after the battery is consumed.
Disclosure of Invention
The utility model aims to provide a power-on key reset circuit of an electronic product.
The technical solution for realizing the purpose of the utility model is as follows: the utility model provides an electronic product start key reset circuit, including being used for carrying out the lithium cell BAT1 that supplies power to electronic product, lithium cell BAT1 connects charging source and power consumption, be connected with switch K1 between lithium cell BAT1 and the power consumption, MOS pipe Q1, triode Q2, Q3, stabiliser U1, diode D1, D2, electric capacity C4, resistance R3, R4, wherein, switch K1's one end inserts electronic product after connecting stabiliser U1 through diode D1, D2 respectively, switch K1's the other end inserts MOS pipe Q1's source after being connected with lithium cell BAT1, MOS pipe Q1's drain electrode is connected and is used the power consumption, triode Q2's collecting electrode is connected to MOS pipe Q1's grid, triode Q3's collecting electrode inserts between diode D2 and the electronic product after connecting triode Q2, resistance R3, R4 inserts behind the series connection in proper order between stabiliser U1 and the diode D1, electric capacity C4's the other end inserts between resistance R3 behind the one end, R4, and the other end of electric capacity C4 connects behind the ground connection of resistance R4.
Further, the triodes Q2 and Q3 are NPN triodes.
Further, the MOS transistor Q1 is a P_MOS transistor.
Further, the voltage stabilizing tube U1 is a 3.3V voltage stabilizing tube.
Further, the collector of the triode Q3 is connected with the electronic product through resistors R2 and R5.
Further, a capacitor C1 is connected between the switch K1 and the charging power supply, and a capacitor C2 is connected between the MOS tube Q1 and the power consumption power supply.
Compared with the prior art, the utility model has the remarkable advantages that: the utility model realizes the reset through the switch without waiting for the battery to run out.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description of the embodiments of the present utility model or the drawings required to be used in the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and other drawings may be obtained according to the provided drawings without inventive effort to a person skilled in the art.
Fig. 1 is a circuit diagram of the present utility model.
Detailed Description
For a clearer description of the present utility model, specific examples are given below for further illustration.
In combination with fig. 1, an electronic product turn-on key reset circuit comprises a lithium battery BAT1, wherein the lithium battery BAT1 is used for supplying power to an electronic product, the BAT of the lithium battery BAT1 is connected with a charging power supply, VBAT is connected with an electric power supply, a switch K1, a p_mos transistor Q1, NPN triodes Q2 and Q3, a voltage regulator U1, diodes D1 and D2, a capacitor C4, a resistor R3, a resistor R4, a resistor R2 and a resistor R5 are connected between the lithium battery BAT1 and the electric power supply, GPIO1 and GPIO2 are the IO port on an MCU of the electronic product, one end of the switch K1 is connected with the voltage regulator U1 and then connected with the electronic product through diodes D1 and D2, the other end of the switch K1 is connected with the lithium battery BAT1 and then connected with the source of the p_mos transistor Q1, the drain of the p_mos transistor Q1 is connected with the electric power supply, the rear end of the NPN transistor Q2 is connected with the collector of the NPN transistor Q2, the rear end of the NPN transistor Q2 is connected with the diode D2, the rear end of the transistor Q2 is connected with the capacitor C3, the other end of the transistor is connected with the resistor C4 is connected with the resistor C1 and the other end of the resistor C4, the transistor is connected with the other end of the resistor C4 is connected with the resistor C1 and the other end of the resistor 3 is connected with the resistor C4, and the other end of the resistor is connected with the capacitor 1 is connected with the other end of the resistor 1.
When in use, the utility model is characterized in that:
k1 startup function: pressing K1, supplying power to U1 by the lithium battery through K1, outputting 3.3V, pulling down Q1 (G) through D2, R2 to Q2, and conducting Q1 to supply power to the whole machine; meanwhile, GPIO2 receives a high level (MCU can set the starting time to be 3S) and then GPIO1 outputs the high level after 3S, Q1 and Q2 work, and after 3S, the key is released and the machine is started;
k1 function key: the key is pressed in the starting state, GPIO2 receives high level (MCU can set 1S, 3S, double click to set different functions);
k1 shutdown function: when the key is pressed in the starting state, the GPIO2 receives a high level (the MCU can set 5S as shutdown) and then the GPIO1 is shut down to output a low level after 5S, and Q2 and Q1 do not work after the key is released, so that the power supply of the whole machine is disconnected.
K1 reset function: the reset function is realized by U1, R3, R4, C4 and Q3, U1 outputs 3.3V, reset time is set by adjusting R3, R4 and C4 parameters, and charging time is as follows:
t＝-R3‖R4*C4·ln[1-(R3+R4)/R4*0.6/3.3]
discharge time:
t＝-R4*C4·ln[(R3+R4)/R4*0.6/3.3]
t units: millisecond R3, R4 units: KC units: uF
When the MCU appears that the GPIO1 cannot control the output of low level to shut down, the MCU belongs to dead halt, and Q3 is conducted when C4 is charged to 0.6V through R3 according to K1 (set time 15S) 3.3V, so that Q2 and Q1 do not work to disconnect the power supply of the whole machine to play a reset role.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.
Claims (6)
1. The utility model provides an electronic product start key reset circuit, a serial communication port, including being used for carrying out the lithium cell BAT1 of power supply to electronic product, lithium cell BAT1 connects charging source and power consumption power supply, be connected with switch K1 between lithium cell BAT1 and the power consumption power supply, MOS pipe Q1, triode Q2, Q3, the regulator tube U1, diode D1, D2, electric capacity C4, resistance R3, R4, wherein, switch K1's one end inserts electronic product after connecting regulator tube U1 through diode D1, D2 respectively, switch K1's the other end inserts MOS pipe Q1's source after being connected with lithium cell BAT1, MOS pipe Q1's drain electrode is connected power consumption power supply, triode Q1's collecting electrode is connected to MOS pipe Q2's grid, triode Q2's base inserts between diode D2 and the electronic product after connecting in series in proper order between triode Q1 and the diode D1, resistance R3, R4 inserts resistance R4 after the one end of triode Q3's connection electric capacity C4, and the other end of connecting between the electric capacity C4 and the other end of R4 connects.
2. The electronic product turn-on key reset circuit of claim 1, wherein said transistors Q2 and Q3 are NPN transistors.
3. The electronic product turn-on key reset circuit according to claim 1, wherein the MOS transistor Q1 is a p_mos transistor.
4. The electronic product turn-on key reset circuit according to claim 1, wherein the voltage regulator tube U1 is a 3.3V voltage regulator tube.
5. The electronic product turn-on key reset circuit according to claim 1, wherein the collector of the triode Q3 is connected to the electronic product through resistors R2 and R5.
6. The electronic product turn-on key reset circuit according to claim 1, wherein a capacitor C1 is connected between the switch K1 and the charging power source, and a capacitor C2 is connected between the MOS transistor Q1 and the power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223367505.0U CN219351699U (en) | 2022-12-15 | 2022-12-15 | Electronic product start key reset circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223367505.0U CN219351699U (en) | 2022-12-15 | 2022-12-15 | Electronic product start key reset circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219351699U true CN219351699U (en) | 2023-07-14 |
Family
ID=87075409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223367505.0U Active CN219351699U (en) | 2022-12-15 | 2022-12-15 | Electronic product start key reset circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219351699U (en) |
-
2022
- 2022-12-15 CN CN202223367505.0U patent/CN219351699U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202443282U (en) | Zero-power-consumption standby circuit | |
| CN210669590U (en) | Lithium battery management application circuit | |
| CN114006433A (en) | Battery device | |
| CN109756021B (en) | Power supply control circuit and electrical equipment | |
| CN103973101B (en) | A kind of DC-DC power source adapter | |
| CN219351699U (en) | Electronic product start key reset circuit | |
| CN210780130U (en) | Power-off control circuit | |
| CN110932706A (en) | Control circuit for avoiding shutdown leakage current of intelligent hardware | |
| CN214474527U (en) | Startup and shutdown circuit with hardware forced shutdown function | |
| CN111262328A (en) | Vehicle-mounted terminal standby battery management system | |
| CN215185914U (en) | Standby zero-power-consumption circuit applied to battery power supply equipment | |
| CN201918798U (en) | Portable power supply | |
| CN213780904U (en) | Power supply switching system | |
| CN201497947U (en) | Power management circuit with embedded chip | |
| CN210924256U (en) | Battery starting circuit | |
| CN218767861U (en) | Low-power-consumption control circuit for power supply of single lithium battery | |
| CN212992000U (en) | Battery power supply control circuit | |
| CN220209993U (en) | Battery management module based on separation components and parts | |
| CN216016467U (en) | Low-voltage protection circuit, device and electrical equipment | |
| CN219892997U (en) | Lithium battery overcharge-preventing switching circuit and audio equipment | |
| CN204271681U (en) | The battery electric quantity protective circuit of portable equipment | |
| CN221080945U (en) | Control circuit of mobile power supply and mobile power supply | |
| CN212258491U (en) | Novel zero current shutdown circuit is awaken up to BMS electricity | |
| CN221149181U (en) | Control circuit of electric breast pump | |
| CN203071565U (en) | Power saving circuit for lithium battery protection board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |