CN207164696U - A kind of low-power dissipation power supply - Google Patents
A kind of low-power dissipation power supply Download PDFInfo
- Publication number
- CN207164696U CN207164696U CN201721089754.4U CN201721089754U CN207164696U CN 207164696 U CN207164696 U CN 207164696U CN 201721089754 U CN201721089754 U CN 201721089754U CN 207164696 U CN207164696 U CN 207164696U
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- CN
- China
- Prior art keywords
- power supply
- pin
- optocoupler
- low
- integrated circuit
- 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.)
- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of low-power dissipation power supply, including resistance R1, resistance R2, capacitor C1With capacitor C2Characterized in that, also include detecting system, optocoupler U4, integrated circuit U1With triode Q1.The utility model can automatic identification product power supply whether normally charging, when product is fully charged, detecting system is capable of detecting when, and timely closes output, when product not enough power supply, when connecting with the mains can detecting system identify and open the output of electricity and charged, when not pulling out the connection of power supply and socket, the power consumption of power supply itself is reduced, realizes the low-power consumption of power supply, the no-load power when product is fully charged is reduced, saves energy.
Description
Technical field
Power technique fields are the utility model is related to, more particularly to a kind of low-power dissipation power supply.
Background technology
Field of power supplies generally use at present：Exchange input (AC) and direct current input (DC), exchange input (AC) is first input
Current rectification is dc source, then carries out the output that DC/DC is converted to direct current, and direct current input (DC) directly carries out DC/DC conversions
Exported for direct current (DC).
Power supply does not have alternating-current switch in itself, could only be disconnected by pulling out the plug of power supply.These products need manual
To start shooting or switch on power.User is finished the electronic products such as mobile phone and carries out having three kinds of modes, first way during power-off operation
It is the connection plug for pulling out power supply and electricity, the second way is to pull out the plug that power supply is connected with mobile phone, and the third mode is then
Any operation is not done after shutdown.First way does not have a power attenuation, but because power supply and electric-connected socket are typically in shelter,
Operation inconvenience, so many people do not operate so.The second way, power supply are in Light Condition, and no-load power consumption is typically in 500mW
Left and right, the relatively good power supply done now is about in 300mW.The third mode, stand-by power consumption is in more than 1W.Second and third kind of behaviour
Energy waste is brought as mode, the energy-conserving and environment-protective theory advocated with today's society is incompatible with.
In the design of power supply, low power dissipation design is that many designers have to solve the problems, such as, reason is some
Product needs sufficient power supply supply, but some products but cannot get sufficient power supply supply, lean on battery powered, so drop
Low power consumption, have become the problem of increasingly paying close attention to.
Utility model content
Above-mentioned to solve the problems, such as, the utility model provides a kind of low-power dissipation power supply, including resistance R1, resistance R2, electric capacity
Device C1With capacitor C2Characterized in that, also include detecting system, optocoupler U4, integrated circuit U1With triode Q1, the detection system
System passes through positive source and optocoupler U41 pin be connected, the optocoupler U42 pin be connected with power cathode, the optocoupler U44 pin
It is connected to resistance R2, the resistance R1It is connected to integrated circuit U18 pin, the triode Q1Colelctor electrode be connected to integrated electricity
Road U11 pin, the U18 pin pass through R2It is connected to optocoupler U44 pin.
Further, the integrated circuit U15 pin be connected to triode Q1Emitter stage.
Further, the integrated circuit U12 pin be Voltage Feedback, the integrated circuit U13 pin be current feedback.
Further, it is characterised in that the optocoupler U4Model PC817B.
Further, the integrated circuit U1Model UC3842.
The beneficial effects of the utility model are：
Can automatic identification product power supply whether normally charging, when product is fully charged, detecting system can detect
Go out, and timely close output, when product not enough power supply, when connecting with the mains can detecting system identify and open electricity
Output charged, when not pulling out the connection of power supply and socket, reduce the power consumption of power supply itself, realize the low of power supply
Power consumption, the no-load power when product is fully charged is reduced, saves energy.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings.
The utility model provides a kind of low-power dissipation power supply, including resistance R1, resistance R2, capacitor C1With capacitor C2Its
It is characterised by, in addition to detecting system, optocoupler U4, integrated circuit U1With triode Q1, the detecting system by positive source with
Optocoupler U41 pin be connected, the optocoupler U42 pin be connected with power cathode, the optocoupler U44 pin be connected to resistance R2, it is described
Resistance R1It is connected to integrated circuit U18 pin, the triode Q1Colelctor electrode be connected to integrated circuit U11 pin, the U1's
8 pin pass through R2It is connected to optocoupler U44 pin.
The integrated circuit U15 pin be connected to triode Q1Emitter stage, the integrated circuit U12 pin for voltage it is anti-
Feedback, the integrated circuit U13 pin be current feedback, it is characterised in that the optocoupler U4Model PC817B, it is described integrated
Circuit U1Model UC3842.
When battery connection is correct, optocoupler U41 pin and 2 pin between voltage be present, and voltage is just, optocoupler U43 pin
Turned on 4 pin, triode Q1Base stage move low potential, triode Q to1Cut-off, triode Q1Current collection extremely high level, integrate
Circuit U11 pin be high level, integrated circuit is opened therewith, at this moment, it is possible to charge normal.
When product is fully charged, current detecting system detect electric current value be less than setting value, at this moment 1 pin of optocoupler and
The voltage of 2 pin is 0, the cut-off of the pin of optocoupler 3 and 4 pin, and the base stage of triode is forgotten about it high level, triode ON, triode
Current collection is extremely low level, and 1 pin of integrated circuit is low level, and at this moment integrated circuit may turn off output.
When battery is not connected with, the voltage between 1 pin and 2 pin of optocoupler is 0,3 pin of optocoupler and the cut-off of 4 pin, resistance R2
8 pin with being connected integrated circuit are high level, and the base stage of triode is by resistance R2Forget about it high level, triode ON, triode
Current collection extremely low level, integrated circuit can also close output.
When connecting with the mains can detecting system identify and open the output of electricity and charged, do not pull out power supply with
During the connection of socket, the power consumption of power supply itself is reduced, realizes the low-power consumption of power supply, reduces the sky when product is fully charged
Power is carried, saves energy.
General principle and principal character of the present utility model are the foregoing described, it should be understood by those skilled in the art that, this
Utility model is not restricted to the described embodiments, and simply illustrates original of the present utility model described in above-described embodiment and specification
Reason, on the premise of the spirit and scope of the utility model is not departed from, the utility model also has various changes and modifications, these changes
Change and improve and both fall within claimed the scope of the utility model, scope is claimed by appended claim in utility model
Book and its equivalent thereof.
Claims (5)
1. a kind of low-power dissipation power supply, including resistance R1, resistance R2, capacitor C1With capacitor C2, it is characterised in that also include detection
System, optocoupler U4, integrated circuit U1With triode Q1, the detecting system passes through positive source and optocoupler U41 pin be connected, institute
State optocoupler U42 pin be connected with power cathode, the optocoupler U44 pin be connected to resistance R2, the resistance R1It is connected to integrated electricity
Road U18 pin, the triode Q1Colelctor electrode be connected to integrated circuit U11 pin, the U18 pin pass through R2It is connected to optocoupler
U44 pin.
A kind of 2. low-power dissipation power supply according to claim 1, it is characterised in that the integrated circuit U15 pin be connected to three
Pole pipe Q1Emitter stage.
A kind of 3. low-power dissipation power supply according to claim 1, it is characterised in that the integrated circuit U12 pin for voltage it is anti-
Feedback, the integrated circuit U13 pin be current feedback.
A kind of 4. low-power dissipation power supply according to claim 1, it is characterised in that the optocoupler U4Model PC817B.
A kind of 5. low-power dissipation power supply according to claim 1, it is characterised in that the integrated circuit U1Model
UC3842。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721089754.4U CN207164696U (en) | 2017-08-29 | 2017-08-29 | A kind of low-power dissipation power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721089754.4U CN207164696U (en) | 2017-08-29 | 2017-08-29 | A kind of low-power dissipation power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207164696U true CN207164696U (en) | 2018-03-30 |
Family
ID=61718794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721089754.4U Expired - Fee Related CN207164696U (en) | 2017-08-29 | 2017-08-29 | A kind of low-power dissipation power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207164696U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111969857A (en) * | 2020-08-19 | 2020-11-20 | 东莞市大忠电子有限公司 | Massage armchair power supply |
-
2017
- 2017-08-29 CN CN201721089754.4U patent/CN207164696U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111969857A (en) * | 2020-08-19 | 2020-11-20 | 东莞市大忠电子有限公司 | Massage armchair power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180330 Termination date: 20180829 |