CN106849703A - The stable-pressure device of double screen all-in-one - Google Patents
The stable-pressure device of double screen all-in-one Download PDFInfo
- Publication number
- CN106849703A CN106849703A CN201710004612.1A CN201710004612A CN106849703A CN 106849703 A CN106849703 A CN 106849703A CN 201710004612 A CN201710004612 A CN 201710004612A CN 106849703 A CN106849703 A CN 106849703A
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- Prior art keywords
- diode
- triode
- resistance
- circuit
- rectifier bridge
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- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/2176—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only comprising a passive stage to generate a rectified sinusoidal voltage and a controlled switching element in series between such stage and the output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses the stable-pressure device of 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, power transformer secondary coil two ends are connected with two inputs of rectifier bridge, the cathode output end of rectifier bridge is connected to the positive terminal of electrochemical capacitor C, and the cathode output end of rectifier bridge is connected to the negative pole end of electrochemical capacitor C；Mu balanced circuit includes triode T1, triode T2, voltage-regulator diode, resistance R3, resistance R4, the colelctor electrode of triode T1 is connected on the circuit that rectifier bridge is connected with electrochemical capacitor C, the base stage of triode T1 is connected with the colelctor electrode of triode T2, the positive terminal of the transmitting extremely output voltage of triode T1, the emitter stage of triode T2 is connected with the anode tap of voltage-regulator diode.The present invention 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 present invention relates to power supply, and in particular to the stable-pressure device of double screen all-in-one.
Background technology
Order now, take express delivery, the mode of cash register has been made a world of difference compared with the past, being 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 stabilization 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 the voltage or load resistance of communication power supply change, the direct voltage output of voltage-stablizer can keep stabilization.
After the one-way communication power supply of 220V, 50Hz is depressured through power transformer, then can to obtain low-voltage small-power by rectifying and wave-filtering straight
Stream power supply.However, because line voltage can haveChange.In addition, load change causes pressure drop in dc source internal resistance
Change, output DC voltage changes after causing rectifying and wave-filtering.For that purpose it is necessary to by rectification, filtered DC voltage by
Load is available to after mu balanced circuit stabilization, direct current power source voltage in load is reached minimum by the influence degree of above-mentioned factor.
The content of the invention
The technical problems to be solved by the invention are that the DC voltage voltage that changes is exported after rectification in the prior art is steady
It is qualitative inadequate, it is therefore intended that the stable-pressure device of double screen all-in-one to be provided, makes the DC voltage after rectification more stable, extend double screen one
The service life of body machine.
The present invention is achieved through the following technical solutions：
The stable-pressure device of double screen all-in-one, including power transformer, current rectifying and wave filtering circuit and mu balanced circuit, the rectification filter
Wave circuit includes rectifier bridge and electrochemical capacitor C, and the power transformer secondary coil two ends connect with two inputs of rectifier bridge
Connect, the cathode output end of rectifier bridge is connected to the positive terminal of electrochemical capacitor C, the cathode output end of rectifier bridge is connected to electrochemical capacitor
The negative pole end of C；The mu balanced circuit includes triode T1, triode T2, voltage-regulator diode DZ, resistance R3, resistance R4, described three
The colelctor electrode of pole pipe T1 is connected on the circuit that rectifier bridge is connected with electrochemical capacitor C, and the base stage of triode T1 is with triode T2's
Colelctor electrode is connected, the transmitting extremely positive terminal of output voltage Vo, the emitter stage and voltage-regulator diode of triode T2 of triode T1
The anode tap connection of DZ；Resistance R3, resistance R4 connect, and the other end of resistance R3 and resistance R4 connection ends is with output voltage Vo just
Extreme connection, resistance R4 is connected with the other end of resistance R3 connection ends with the negative pole end of output voltage Vo, and resistance R4 is electric with output
Press connection end, the cathode terminal of voltage-regulator diode DZ, the negative pole end common ground of electrochemical capacitor C of the negative pole end of Vo.Power supply transformation
Alternating current is introduced power supply by device, and exchange is changed into direct current using current rectifying and wave filtering circuit, but this direct current is unstable, therefore is used
Mu balanced circuit carries out exporting again after voltage stabilizing using to direct current, can effectively extend the using effect of double screen all-in-one and use the longevity
Life.
Further, mu balanced circuit also includes resistance R1, resistance R2, and described resistance R1 one end is connected to triode T1 with electricity
On the circuit of solution 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 alternating current that size is 220V, frequency is 50Hz is accessed at the primary coil two ends of power transformer.
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 present invention compared with prior art, has the following advantages and advantages：It is applied power source transformer of the present invention, whole
Alternating current is converted to the direct current of stabilization output for stream filter circuit, mu balanced circuit, for double screen all-in-one provides reliable and stable
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 all-in-one
Service life, further reduces the cost payout of user.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
It is limitation of the invention.
Embodiment
As shown in figure 1, the stable-pressure device 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 power transformer secondary coil two ends and the two of rectifier bridge
Individual input connection, the cathode output end of rectifier bridge is connected to the positive terminal of electrochemical capacitor C, the cathode output end connection of rectifier bridge
In the negative pole end of electrochemical capacitor C；The mu balanced circuit includes triode T1, triode T2, voltage-regulator diode DZ, resistance R3, electricity
Resistance R4, the colelctor electrode of the triode T1 is connected on the circuit that rectifier bridge is connected with electrochemical capacitor C, the base stage of triode T1 and
The colelctor electrode connection of triode T2, the transmitting extremely positive terminal of output voltage Vo of triode T1, the emitter stage of triode T2 with
The anode tap connection of voltage-regulator diode DZ；Resistance R3, resistance R4 connect, the other end and the output of resistance R3 and resistance R4 connection ends
The positive terminal connection of voltage Vo, resistance R4 is connected with the other end of resistance R3 connection ends with the negative pole end of output voltage Vo, resistance
The connection end of R4 and the negative pole end of output voltage Vo, the cathode terminal of voltage-regulator diode DZ, the negative pole end of electrochemical capacitor C connect jointly
Ground.Mu balanced circuit also includes resistance R1, resistance R2, and described resistance R1 one end is connected to what triode T1 was connected with electrochemical capacitor C
On circuit, its other end is connected on the circuit that triode T1 is connected with triode T2；Resistance R2 one end is connected to triode T2
On the circuit being connected with voltage-regulator diode DZ, its other end is connected to the circuit that resistance R3 is connected with output voltage Vo positive terminals
On.Access the alternating current that size is 220V, frequency is 50Hz in the primary coil two ends of power transformer.The rectifier bridge includes two
Pole pipe D1, diode D2, diode D3, diode D4, diode D1 positive poles are connected with diode D2 positive poles, and rectifier bridge one
Individual input is arranged on the circuit between diode D1 positive poles and diode D2 positive poles；Diode D3 negative poles are born with diode D4
Pole is connected, and another input of rectifier bridge is arranged on the circuit between diode D3 negative poles and diode D4 negative poles；Two
Pole pipe 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 diode D4
On circuit between positive pole；Diode D3 positive poles are connected with diode D2 negative poles, and another output end of rectifier bridge is arranged on
On 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
We can obtain actually being more than 22.1V to consider power network fluctuation (generally fluctuation is 0.1, and 0.3 fluctuation is taken for the sake of assurance),
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, reversely pressure-resistant is the diode IN4007 of 1000V.Electrochemical capacitor C in parallel, can be portion when the voltage that power supply is supplied is raised
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
There is flat ripple to act on to hold C.Mu balanced circuit uses serial Feedback formula mu balanced circuit.
Above-described specific embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that and the foregoing is only specific embodiment of the invention, be not intended to limit the present invention
Protection domain, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc. all should include
Within protection scope of the present invention.
Claims (4)
1. the stable-pressure device of double screen all-in-one, 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 includes rectifier bridge and electrochemical capacitor C, the power transformer secondary coil two ends and the two of rectifier bridge
Individual input connection, the cathode output end of rectifier bridge is connected to the positive terminal of electrochemical capacitor C, the cathode output end connection of rectifier bridge
In the negative pole end of electrochemical capacitor C；The mu balanced circuit includes triode T1, triode T2, voltage-regulator diode DZ, resistance R3, electricity
Resistance R4, the colelctor electrode of the triode T1 is connected on the circuit that rectifier bridge is connected with electrochemical capacitor C, the base stage of triode T1 and
The colelctor electrode connection of triode T2, the transmitting extremely positive terminal of output voltage Vo of triode T1, the emitter stage of triode T2 with
The anode tap connection of voltage-regulator diode DZ；Resistance R3, resistance R4 connect, the other end and the output of resistance R3 and resistance R4 connection ends
The positive terminal connection of voltage Vo, resistance R4 is connected with the other end of resistance R3 connection ends with the negative pole end of output voltage Vo, resistance
The connection end of R4 and the negative pole end of output voltage Vo, the cathode terminal of voltage-regulator diode DZ, the negative pole end of electrochemical capacitor C connect jointly
Ground.
2. the stable-pressure device of double screen all-in-one according to claim 1, it is characterised in that the mu balanced circuit also includes electricity
Resistance R1, resistance R2, described resistance R1 one end are connected on the circuit that triode T1 is connected with electrochemical capacitor C, the connection of its other end
On the circuit that triode T1 is connected with triode T2；Resistance R2 one end is connected to what triode T2 was connected with voltage-regulator diode DZ
On circuit, its other end is connected on the circuit that resistance R3 is connected with output voltage Vo positive terminals.
3. the stable-pressure device of double screen all-in-one according to claim 1, it is characterised in that the primary of the power transformer
Access the alternating current that size is 220V, frequency is 50Hz in coil two ends.
4. the stable-pressure device of double screen all-in-one according to claim 1, it is characterised in that the rectifier bridge includes diode
D1, diode D2, diode D3, diode D4, diode D1 positive poles are connected with diode D2 positive poles, and one of rectifier bridge defeated
Enter end to be arranged on the circuit between diode D1 positive poles and diode D2 positive poles；Diode D3 negative poles connect with diode D4 negative poles
Connect, and another input of rectifier bridge is arranged on the circuit between diode D3 negative poles and diode D4 negative poles；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 diode D4 positive poles
Between circuit on；Diode D3 positive poles are connected with diode D2 negative poles, and another output end of rectifier bridge is arranged on two poles
On circuit between pipe D3 positive poles and diode D2 negative poles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710004612.1A CN106849703A (en) | 2017-01-04 | 2017-01-04 | The stable-pressure device of double screen all-in-one |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710004612.1A CN106849703A (en) | 2017-01-04 | 2017-01-04 | The stable-pressure device of double screen all-in-one |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106849703A true CN106849703A (en) | 2017-06-13 |
Family
ID=59118613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710004612.1A Withdrawn CN106849703A (en) | 2017-01-04 | 2017-01-04 | The stable-pressure device of double screen all-in-one |
Country Status (1)
| Country | Link |
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| CN (1) | CN106849703A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113708610A (en) * | 2021-07-30 | 2021-11-26 | 浙江振圣机电科技有限公司 | Full voltage controller |
-
2017
- 2017-01-04 CN CN201710004612.1A patent/CN106849703A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113708610A (en) * | 2021-07-30 | 2021-11-26 | 浙江振圣机电科技有限公司 | Full voltage controller |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170613 |
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| WW01 | Invention patent application withdrawn after publication |