CN206099488U - Universal cell phone power supply circuit - Google Patents
Universal cell phone power supply circuit Download PDFInfo
- Publication number
- CN206099488U CN206099488U CN201621149401.4U CN201621149401U CN206099488U CN 206099488 U CN206099488 U CN 206099488U CN 201621149401 U CN201621149401 U CN 201621149401U CN 206099488 U CN206099488 U CN 206099488U
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- mobile phone
- outfan
- balanced
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- 239000000411 inducer Substances 0.000 claims description 13
- 230000001413 cellular effect Effects 0.000 claims description 11
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 abstract description 7
- 230000004044 response Effects 0.000 abstract description 3
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses an universal cell phone power supply circuit, including charging circuit, voltage stabilizing circuit and power internal circuit, charging circuit includes transformer, rectifier circuit and filter circuit, the commercial power in 220V is connected to the input of transformer, just the output of transformer is connected in rectifier circuit's input, rectifier circuit's output is connected in filter circuit's input, just filter circuit's output is connected with a single -pole double -throw K1, single -pole double -throw K1 is connected with voltage stabilizing circuit at the back, and voltage stabilizing circuit's output connects in the power internal circuit, the utility model discloses well adoption full wave rectifier circuit, output voltage is undulant little, uses the diode less moreover, very economy, voltage stabilizing circuit adopts series feedback type voltage stabilizing circuit, compares three -terminal voltage -stabilizing integrated circuit, advantage such as have that stabilization of output nature is high, ripple voltage is little, response speed is fast and maintain conveniently.
Description
Technical field
This utility model is related to cellular phone power supplies field of circuit technology, the cellular phone power supplies circuit of specially a kind of DC-AC two-use.
Background technology
Mobile phone is one of current most widely used instrument, and adult has nearly reached staff one, or even a few portions of a people
Degree, at present mobile phone on the market generally using chargeable lithium ion battery as battery, have a battery compartment in mobile phone,
Battery is installed, it is limited that its shortcoming is the electricity of battery in battery compartment, and the more frequent, charging times that charge are more, electricity
The life-span in pond is shorter, and battery just only changes battery or changes mobile phone after scrapping, and the price of battery is typically also to compare
High, and the battery changed is always good without original-pack battery, if the usage amount of battery can be reduced as far as, just as pen meter
Like that, civil power when having civil power then uses battery to this computer when no, can thus extend the service life of battery.
Compared to existing technology the cellular phone power supplies circuit of middle DC-AC two-use, has the following disadvantages：1st, diode bridge is used
Formula rectification circuit, this rectification circuit uses diode more, relatively costly；2nd, filter circuit simply uses a filtered electrical
Hold, cause the effect for reducing AC ripple ripple coefficient low；3rd, used in most of circuit three-terminal voltage-stabilizing integrated package reaching
The effect of voltage stabilizing, stability is not high and repairs inconvenience.
Utility model content
The purpose of this utility model is the cellular phone power supplies circuit for providing a kind of DC-AC two-use, to solve above-mentioned background technology
The problem of middle proposition.
For achieving the above object, this utility model provides following technical scheme：
A kind of cellular phone power supplies circuit of DC-AC two-use, including charging circuit, mu balanced circuit and power source internal circuit, it is described to fill
Circuit includes transformator, rectification circuit and filter circuit, and the input of the transformator is connected to 220V civil powers, the transformation
The outfan of device is connected to the input of rectification circuit, and the outfan of the rectification circuit is connected to the input of filter circuit,
The outfan of the filter circuit is connected with a single-pole double-throw switch (SPDT) K1, and voltage stabilizing electricity is connected with behind the single-pole double-throw switch (SPDT) K1
Road, the outfan of mu balanced circuit is connected to power source internal circuit；
The mu balanced circuit is serial Feedback type mu balanced circuit, and the serial Feedback type mu balanced circuit includes reference voltage source
B, amplifier A, audion Q and sample circuit, the reference voltage source B is connected in the input of mu balanced circuit, the benchmark
Voltage source B is connected to the 1st pin of amplifier A, and the input of mu balanced circuit is connected to the colelctor electrode c of audion Q, audion Q
Ground level b be connected to the 3rd pin of amplifier, the sample circuit is in series by resistance R1, resistance R2 and resistance R3, is amplified
2nd pin of device is connected to resistance R2, and the emitter e of audion Q is connected to resistance R1, and the two ends of sample circuit connect respectively two
Individual charging contacts a1 and a2.
Preferably, the transformator has three output terminations, and middle ground, two other output termination is connected to respectively rectification
Diode D1 and D2 in circuit, the outfan of diode D1 and D2 is connected together.
Preferably, the filter circuit includes inducer L and filter capacitor C, the outfan string of the diode D1 and D2
Connection has inducer L, and between the inducer L and earth terminal filter capacitor C is parallel with.
Preferably, the charging contacts a1 and a2 butts up against respectively the charging contacts of battery of mobile phone E in power source internal circuit 5
A3 and a4, charging contacts a3 and a4 are also directly connected in mobile phone load J, and the two ends parallel connection of mobile phone load J is connected to battery of mobile phone
E, in the loop of battery of mobile phone E microswitch K2 is in series with.
Compared with prior art, the beneficial effects of the utility model are：Full-wave rectifying circuit is adopted in this utility model, it is defeated
Go out voltage pulsation little, and it is less using diode, it is very economical；It is in parallel using inducer L and filter capacitor C in filter circuit
Mode, due to inducer L it is little to DC impedance, it is big to AC impedance, can be more preferable by the alternating component in Rectified alternating current
Filter；Mu balanced circuit adopts serial Feedback type mu balanced circuit, circuit of three-terminal voltage-stabilizing integrated is compared, with output voltage stability
Height, little ripple voltage, fast response time and it is easy to maintenance the advantages of.
Description of the drawings
Fig. 1 is this utility model circuit diagram.
In figure：1 transformator, 2 rectification circuits, 3 filter circuits, 4 serial Feedback type mu balanced circuits, 5 power source internal circuits.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
Fig. 1 is referred to, this utility model provides a kind of technical scheme：
A kind of cellular phone power supplies circuit of DC-AC two-use, including charging circuit, mu balanced circuit and power source internal circuit 5, charge
Circuit includes transformator 1, rectification circuit 2 and filter circuit 3, and the input of transformator 1 is connected to 220V civil powers, transformator 1
Outfan is connected to the input of rectification circuit 2, and transformator has three output terminations, middle ground, two other output termination
The diode D1 and D2 being connected to respectively in rectification circuit 2, the outfan of diode D1 and D2 is connected together, by changing two poles
The polarity that pipe is connected, it is possible to tentatively obtain the unidirectional current for needing.
The outfan of rectification circuit 2 is connected to the input of filter circuit 3, and filter circuit includes inducer L and filtered electrical
Hold C, the outfan series connection of diode D1 and D2 is connected to inducer L, filter capacitor C is parallel between inducer L and earth terminal, filters
In wave circuit by the way of inducer L and filter capacitor C are in parallel, due to inducer L it is little to DC impedance, to AC impedance
Greatly, the alternating component in Rectified alternating current can preferably be filtered.
Mu balanced circuit is serial Feedback type mu balanced circuit 4, and serial Feedback type mu balanced circuit 4 includes reference voltage source B, amplifies
Device A, audion Q and sample circuit, reference voltage source B provides reference voltage for mu balanced circuit, and amplifier A is error amplifier,
Output can be made more stable, reference voltage source B is connected in the input of mu balanced circuit, reference voltage source B is connected to amplification
1st pin of device A, the input of mu balanced circuit is connected to the colelctor electrode c of audion Q, and the ground level b of audion Q is connected to amplification
3rd pin of device, sample circuit is in series by resistance R1, resistance R2 and resistance R3, and the 2nd pin of amplifier is connected to resistance
The emitter e of R2, audion Q is connected to resistance R1, and mu balanced circuit adopts serial Feedback type mu balanced circuit 4, compares three-terminal voltage-stabilizing
Integrated circuit, has the advantages that output voltage stability height, little ripple voltage, fast response time and easy to maintenance.
The two ends of sample circuit connect respectively two charging contacts a1 and a2, and the outfan of filter circuit 3 is connected with a list
Double-pole double throw switch K1, single-pole double-throw switch (SPDT) K1 are allocated to P1 junction points, connect the original charging circuit of mobile phone, and directly battery E is charged；
When being allocated to P junction points, mu balanced circuit is connected with behind single-pole double-throw switch (SPDT) K1, the outfan of mu balanced circuit is connected to power source internal
Circuit 5, is connected with mobile phone load J in power source internal circuit 5, the two ends parallel connection of mobile phone load J is connected to battery of mobile phone E, charges and touch
Head a1 and a2 butts up against respectively the charging contacts a3 and a4 of battery of mobile phone E in power source internal circuit 5, and a3 and a4 are also straight for charging contacts
Mobile phone load J is connected in succession, and wherein civil power directly loads J and provide power supply, realizes by serial Feedback type mu balanced circuit 4 to mobile phone
The power supply of J is loaded to mobile phone.
Microswitch K2 is in series with the loop of battery of mobile phone E, by the setting of microswitch K2, works as single-pole double-throw switch (SPDT)
When K1 is allocated to P1 junction points, civil power is charged to battery of mobile phone E, while pressing microswitch K2, to mobile phone load J electricity is provided
Source；From battery of mobile phone E be changed into civil power directly to mobile phone load J provide power supply when, first by single-pole double-throw switch (SPDT) K1 be allocated to P connection
After point, then microswitch K2 is disconnected, civil power can be caused directly to power to mobile phone load J, and enable to changing
Mobile phone is not in the phenomenon of power-off shutdown in journey.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out various changes in the case of without departing from principle of the present utility model and spirit, repaiies
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of cellular phone power supplies circuit of DC-AC two-use, including charging circuit, mu balanced circuit and power source internal circuit (5), it is special
Levy and be：The charging circuit includes transformator (1), rectification circuit (2) and filter circuit (3), the input of the transformator (1)
End is connected to 220V civil powers, and the outfan of the transformator (1) is connected to the input of rectification circuit (2), the rectification circuit
(2) outfan is connected to the input of filter circuit (3), and the outfan of the filter circuit (3) is connected with a single-pole double throw
Switch K1, is connected with mu balanced circuit behind the single-pole double-throw switch (SPDT) K1, the outfan of mu balanced circuit is connected to power source internal electricity
Road (5)；
The mu balanced circuit is serial Feedback type mu balanced circuit (4), and the serial Feedback type mu balanced circuit (4) is including reference voltage
Source B, amplifier A, audion Q and sample circuit, the reference voltage source B is connected in the input of mu balanced circuit, the base
Reference voltage source B is connected to the 1st pin of amplifier A, and the input of mu balanced circuit is connected to the colelctor electrode c of audion Q, audion
The ground level b of Q is connected to the 3rd pin of amplifier, and the sample circuit is in series by resistance R1, resistance R2 and resistance R3, is put
2nd pin of big device is connected to resistance R2, and the emitter e of audion Q is connected to resistance R1, and the two ends of sample circuit connect respectively
Two charging contacts a1 and a2.
2. the cellular phone power supplies circuit of a kind of DC-AC two-use according to claim 1, it is characterised in that：The transformator has three
Individual output termination, middle ground, two other output termination is connected to respectively diode D1 and D2 in rectification circuit (2), two poles
The outfan of pipe D1 and D2 is connected together.
3. the cellular phone power supplies circuit of a kind of DC-AC two-use according to claim 2, it is characterised in that：The filter circuit bag
Include inducer L and filter capacitor C, the outfan series connection of the diode D1 and D2 is connected to inducer L, the inducer L with connect
Filter capacitor C is parallel between ground terminal.
4. the cellular phone power supplies circuit of a kind of DC-AC two-use according to claim 1, it is characterised in that：The charging contacts a1
With charging contacts a3 and a4 that a2 butts up against respectively battery of mobile phone E in power source internal circuit (5), a3 and a4 are also direct for charging contacts
Mobile phone load J is connected to, and the two ends parallel connection of mobile phone load J is connected to battery of mobile phone E, is in series with the loop of battery of mobile phone E micro-
Dynamic switch K2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621149401.4U CN206099488U (en) | 2016-10-23 | 2016-10-23 | Universal cell phone power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621149401.4U CN206099488U (en) | 2016-10-23 | 2016-10-23 | Universal cell phone power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206099488U true CN206099488U (en) | 2017-04-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621149401.4U Expired - Fee Related CN206099488U (en) | 2016-10-23 | 2016-10-23 | Universal cell phone power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206099488U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112998744A (en) * | 2021-03-16 | 2021-06-22 | 广州医科大学附属第一医院（广州呼吸中心） | Stethoscope capable of being interpreted |
-
2016
- 2016-10-23 CN CN201621149401.4U patent/CN206099488U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112998744A (en) * | 2021-03-16 | 2021-06-22 | 广州医科大学附属第一医院（广州呼吸中心） | Stethoscope capable of being interpreted |
| CN112998744B (en) * | 2021-03-16 | 2023-03-10 | 广州医科大学附属第一医院（广州呼吸中心） | Stethoscope capable of being interpreted |
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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: 20170412 Termination date: 20181023 |
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| CF01 | Termination of patent right due to non-payment of annual fee |