CN206332622U - D.C. regulated power supply applied to double screen all-in-one - Google Patents
D.C. regulated power supply applied to double screen all-in-one Download PDFInfo
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- CN206332622U CN206332622U CN201720007860.7U CN201720007860U CN206332622U CN 206332622 U CN206332622 U CN 206332622U CN 201720007860 U CN201720007860 U CN 201720007860U CN 206332622 U CN206332622 U CN 206332622U
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Abstract
The utility model discloses the D.C. regulated power supply applied to double screen all-in-one, including power transformer, current rectifying and wave filtering circuit and mu balanced circuit, current rectifying and wave filtering circuit includes rectifier bridge and electrochemical capacitor C, two inputs connection of power transformer secondary coil two ends and rectifier bridge, the cathode output end of rectifier bridge is connected to electrochemical capacitor C positive terminal, and the cathode output end of rectifier bridge is connected to electrochemical capacitor C negative pole end；Mu balanced circuit includes triode T1, triode T2, voltage-regulator diode, resistance R3, resistance R4, triode T1 colelctor electrode is connected on the circuit that rectifier bridge is connected with electrochemical capacitor C, triode T1 base stage is connected with triode T2 colelctor electrode, the positive terminal of triode T1 transmitting extremely output voltage, triode T2 emitter stage and the anode tap of voltage-regulator diode are connected.The utility model provides reliable and stable dc source for double screen all-in-one, the work that double screen all-in-one can not only be made more stable, moreover it is possible to extend the service life of double screen all-in-one.
Description
Technical field
The utility model is related to power supply, and in particular to the D.C. regulated power supply applied to double screen all-in-one.
Background technology
Order now, take the mode of express delivery, cash register to be made a world of difference compared with the past, carried out using double screen all-in-one
Operation is a main selection mode of businessman, and the D.C. regulated power supply of double screen all-in-one for all-in-one normal work with
And the life-span is critically important.Voltage-stabilized power supply can provide the electronic installation of stable AC power or dc source for load.It is steady including exchange
Voltage source and the major class of D.C. regulated power supply two.D.C. regulated power supply is also known as direct current stabilizer.Its power supply is mostly exchange
Power supply, when voltage or the load resistance change of communication power supply, the direct voltage output of voltage-stablizer can keep stable.
After 220V, 50Hz one-way communication power supply are depressured through power transformer, then can to obtain low-voltage small-power straight by rectifying and wave-filtering
Flow power supply.However, because line voltage can have 10% change.In addition, load change causes pressure drop in dc source internal resistance to become
Change, cause output DC voltage after rectifying and wave-filtering to change.For that purpose it is necessary to by rectification, filtered DC voltage by steady
Load is available to after volt circuit is stable, direct current power source voltage in load is reached minimum by the influence degree of above-mentioned factor.
Utility model content
Technical problem to be solved in the utility model is that output DC voltage changes electricity after rectification in the prior art
Press stability inadequate, it is therefore intended that to provide the D.C. regulated power supply applied to double screen all-in-one, make the DC voltage after rectification more
It is stable, extend the service life of double screen all-in-one.
The utility model is achieved through the following technical solutions：
Applied to the D.C. regulated power supply of double screen all-in-one, including power transformer, current rectifying and wave filtering circuit and mu balanced circuit,
The current rectifying and wave filtering circuit includes rectifier bridge and electrochemical capacitor C, the two of the power transformer secondary coil two ends and rectifier bridge
Individual input connection, the cathode output end of rectifier bridge is connected to electrochemical capacitor C positive terminal, the cathode output end connection of rectifier bridge
In electrochemical capacitor C negative pole end；The mu balanced circuit includes triode T1, triode T2, voltage-regulator diode DZ, resistance R3, electricity
Hinder R4, the colelctor electrode of the triode T1 is connected on the circuit that rectifier bridge is connected with electrochemical capacitor C, triode T1 base stage and
Triode T2 colelctor electrode connection, triode T1 transmitting extremely output voltage Vo positive terminal, triode T2 emitter stage with
Voltage-regulator diode DZ anode tap connection；Resistance R3, resistance R4 connect, the other ends and output of the resistance R3 with resistance R4 connection ends
Voltage Vo positive terminal connection, resistance R4 is connected with the other end of resistance R3 connection ends with output voltage Vo negative pole end, resistance
R4 and the connection end of output voltage Vo negative pole end, voltage-regulator diode DZ cathode terminal, electrochemical capacitor C negative pole end connect jointly
Ground.Alternating current is introduced power supply by power transformer, and exchange is changed into direct current using current rectifying and wave filtering circuit, but this direct current is unstable
It is fixed, therefore used using mu balanced circuit being exported again after direct current progress voltage stabilizing, it can effectively extend the use effect of double screen all-in-one
Fruit and service life.
Further, mu balanced circuit also includes resistance R1, resistance R2, and described resistance R1 one end is connected to triode T1 and electricity
On the circuit for solving electric capacity C connections, its other end is connected on the circuit that triode T1 is connected with triode T2；Resistance R2 one end connects
It is connected on the circuit that triode T2 is connected with voltage-regulator diode DZ, its other end is connected to resistance R3 and output voltage Vo positive terminals
On the circuit of connection.
Further, the primary coil two ends access size of power transformer is the alternating current that 220V, frequency are 50Hz.
Further, the rectifier bridge includes diode D1, diode D2, diode D3, diode D4, and diode D1 is just
Pole is connected with diode D2 positive poles, and an input of rectifier bridge is arranged between diode D1 positive poles and diode D2 positive poles
Circuit on；Diode D3 negative poles are connected with diode D4 negative poles, and another input of rectifier bridge is arranged on diode D3
On circuit between negative pole and diode D4 negative poles；Diode D1 negative poles are connected with diode D4 positive poles, and one of rectifier bridge
Output end is arranged on the circuit between diode D1 negative poles and diode D4 positive poles；Diode D3 positive poles and diode D2 negative poles
Connect, and another output end of rectifier bridge is arranged on the circuit between diode D3 positive poles and diode D2 negative poles.
The utility model compared with prior art, has the following advantages and advantages：The utility model applied power source
Transformer, current rectifying and wave filtering circuit, mu balanced circuit are converted to alternating current in the direct current of stable output, are provided surely for double screen all-in-one
Fixed reliable dc source, the work that double screen all-in-one can not only be made more stable reduces unnecessary loss, moreover it is possible to extend double screen
The service life of all-in-one, further reduces the cost payout of user.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, constitutes the one of the application
Part, does not constitute the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the utility model structural representation.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, is not intended as limiting of the present utility model.
Embodiment
As shown in figure 1, the D.C. regulated power supply applied to double screen all-in-one, including power transformer, current rectifying and wave filtering circuit
And mu balanced circuit, the current rectifying and wave filtering circuit include rectifier bridge and electrochemical capacitor C, the power transformer secondary coil two ends with
Two inputs connection of rectifier bridge, the cathode output end of rectifier bridge is connected to electrochemical capacitor C positive terminal, the negative pole of rectifier bridge
Output end is connected to electrochemical capacitor C negative pole end；The mu balanced circuit include triode T1, triode T2, voltage-regulator diode DZ,
Resistance R3, resistance R4, the triode T1 colelctor electrode are connected on the circuit that rectifier bridge is connected with electrochemical capacitor C, triode
T1 base stage is connected with triode T2 colelctor electrode, triode T1 transmitting extremely output voltage Vo positive terminal, triode T2
Emitter stage be connected with voltage-regulator diode DZ anode tap；Resistance R3, resistance R4 connect, resistance R3 and resistance R4 connection ends it is another
One end is connected with output voltage Vo positive terminal, resistance R4 and the other end of resistance R3 connection ends and output voltage Vo negative pole end
Connection, the connection end of resistance R4 and output voltage Vo negative pole end, voltage-regulator diode DZ cathode terminal, electrochemical capacitor C negative pole
Hold common ground.Mu balanced circuit also includes resistance R1, resistance R2, and described resistance R1 one end is connected to triode T1 and electrochemical capacitor
On the circuit of C connections, its other end is connected on the circuit that triode T1 is connected with triode T2；Resistance R2 one end is connected to three
On the circuit that pole pipe T2 is connected with voltage-regulator diode DZ, its other end is connected to what resistance R3 was connected with output voltage Vo positive terminals
On circuit.The primary coil two ends access size of power transformer is the alternating current that 220V, frequency are 50Hz.The rectifier bridge bag
Diode D1, diode D2, diode D3, diode D4 are included, diode D1 positive poles are connected with diode D2 positive poles, and rectifier bridge
An input be arranged on the circuit between diode D1 positive poles and diode D2 positive poles；Diode D3 negative poles and diode
D4 negative poles are connected, and another input of rectifier bridge is arranged on circuit between diode D3 negative poles and diode D4 negative poles
On；Diode D1 negative poles are connected with diode D4 positive poles, and an output end of rectifier bridge is arranged on diode D1 negative poles and two
On circuit between pole pipe D4 positive poles；Diode D3 positive poles are connected with diode D2 negative poles, and another output end of rectifier bridge
It is arranged on the circuit between diode D3 positive poles and diode D2 negative poles.
Current rectifying and wave filtering circuit utilizes the rectifier cell diode with unilateal conduction performance, by the sine of positive and negative alternately change
Ac voltage rectifier is unidirectional pulsating volage.The present embodiment uses single phase bridge type rectifier circu, capacitive load list picture
Bridge rectifier.For full-wave rectification, the inverse peak voltage born for the diode of cut-off state is 43V, is examined
Considering power network fluctuation (generally fluctuation is 0.1, and 0.3 fluctuation is taken for the sake of assurance), we can obtain actually being more than 22.1V,
Inverse peak voltage should be more than 55V.In the case where output current is 500mA to the maximum, we can select the rated current to be
1A, the reverse pressure-resistant diode IN4007 for 1000V.Electrochemical capacitor C in parallel, can be portion in the voltage rise that power supply is supplied
Divide energy storage to get up, and as the voltage decreases, energy can just be discharged, make load voltage smoother, that is, be electrolysed electricity
Holding C, there is flat ripple to act on.Mu balanced circuit uses serial Feedback formula mu balanced circuit.
Above-described embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect
One step is described in detail, be should be understood that and be the foregoing is only embodiment of the present utility model, is not used to limit
Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, is equally replaced
Change, improve, should be included within protection domain of the present utility model.
Claims (4)
1. applied to double screen all-in-one D.C. regulated power supply, it is characterised in that including power transformer, current rectifying and wave filtering circuit and
Mu balanced circuit, the current rectifying and wave filtering circuit include rectifier bridge and electrochemical capacitor C, the power transformer secondary coil two ends with it is whole
Two inputs connection of bridge is flowed, the cathode output end of rectifier bridge is connected to electrochemical capacitor C positive terminal, and the negative pole of rectifier bridge is defeated
Go out the negative pole end that end is connected to electrochemical capacitor C；The mu balanced circuit includes triode T1, triode T2, voltage-regulator diode DZ, electricity
Resistance R3, resistance R4, the triode T1 colelctor electrode are connected on the circuit that rectifier bridge is connected with electrochemical capacitor C, triode T1
Base stage be connected with triode T2 colelctor electrode, triode T1 transmitting extremely output voltage Vo positive terminal, triode T2's
Emitter stage is connected with voltage-regulator diode DZ anode tap；Resistance R3, resistance R4 connect, resistance R3 and resistance R4 connection ends it is another
End is connected with output voltage Vo positive terminal, and resistance R4 connects with the other end of resistance R3 connection ends with output voltage Vo negative pole end
Connect, the connection end of resistance R4 and output voltage Vo negative pole end, voltage-regulator diode DZ cathode terminal, electrochemical capacitor C negative pole end
Common ground.
2. the D.C. regulated power supply according to claim 1 applied to double screen all-in-one, it is characterised in that the voltage stabilizing electricity
Road also includes resistance R1, resistance R2, and described resistance R1 one end is connected on the circuit that triode T1 is connected with electrochemical capacitor C, its
The other end is connected on the circuit that triode T1 is connected with triode T2；Resistance R2 one end is connected to triode T2 and the pole of voltage stabilizing two
On the circuit of pipe DZ connections, its other end is connected on the circuit that resistance R3 is connected with output voltage Vo positive terminals.
3. the D.C. regulated power supply according to claim 1 applied to double screen all-in-one, it is characterised in that the power supply becomes
The primary coil two ends access size of depressor is the alternating current that 220V, frequency are 50Hz.
4. the D.C. regulated power supply according to claim 1 applied to double screen all-in-one, it is characterised in that the rectifier bridge
Including diode D1, diode D2, diode D3, diode D4, diode D1 positive poles are connected with diode D2 positive poles, and rectification
One input of bridge is arranged on the circuit between diode D1 positive poles and diode D2 positive poles；Diode D3 negative poles and two poles
Pipe D4 negative poles are connected, and another input of rectifier bridge is arranged on circuit between diode D3 negative poles and diode D4 negative poles
On；Diode D1 negative poles are connected with diode D4 positive poles, and an output end of rectifier bridge is arranged on diode D1 negative poles and two
On circuit between pole pipe D4 positive poles；Diode D3 positive poles are connected with diode D2 negative poles, and another output end of rectifier bridge
It is arranged on the circuit between diode D3 positive poles and diode D2 negative poles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720007860.7U CN206332622U (en) | 2017-01-04 | 2017-01-04 | D.C. regulated power supply applied to double screen all-in-one |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720007860.7U CN206332622U (en) | 2017-01-04 | 2017-01-04 | D.C. regulated power supply applied to double screen all-in-one |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206332622U true CN206332622U (en) | 2017-07-14 |
Family
ID=59294342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720007860.7U Expired - Fee Related CN206332622U (en) | 2017-01-04 | 2017-01-04 | D.C. regulated power supply applied to double screen all-in-one |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206332622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687737A (en) * | 2018-12-27 | 2019-04-26 | 钟祥博谦信息科技有限公司 | Regulated power supply |
-
2017
- 2017-01-04 CN CN201720007860.7U patent/CN206332622U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687737A (en) * | 2018-12-27 | 2019-04-26 | 钟祥博谦信息科技有限公司 | Regulated power supply |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170714 Termination date: 20180104 |
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| CF01 | Termination of patent right due to non-payment of annual fee |