CN206195640U - Power supply adapter circuit - Google Patents
Power supply adapter circuit Download PDFInfo
- Publication number
- CN206195640U CN206195640U CN201621271105.1U CN201621271105U CN206195640U CN 206195640 U CN206195640 U CN 206195640U CN 201621271105 U CN201621271105 U CN 201621271105U CN 206195640 U CN206195640 U CN 206195640U
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- China
- Prior art keywords
- electric capacity
- diode
- resistance
- chip
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Abstract
The utility model discloses a power supply adapter circuit, including fuse F, switch S, diode D1, resistance R1, inductance L1, electric capacity C1, chip IC1, chip IC2, transformer T and optical coupler, input voltage is connected to fuse F one end, and other end linked switch S, switch S connect diode D3, diode D1 and diode D4, and diode D1 connects diode D2, diode D2 connects gradually inductance L1, resistance R1, electric capacity C1 and electric capacity C2, resistance R2 connects electric capacity C3, and electric capacity C3 connects diode D5, and diode D5 connects chip IC1's D pin and transformer T's primary winding, the utility model discloses power supply adapter circuit utilizes feedback circuit from DC output to control chip IC1, by chip IC1 stable control, has the low power dissipation, and the pick -up current is little, stabilization of output's characteristics, and its performance is good, and interference immunity is strong, especially adapted using widely.
Description
Technical field
The utility model is related to a kind of power circuit, specifically a kind of power adapter circuit.
Background technology
Power supply adaptor is the power supply conversion equipment of small portable electronic device and electronic apparatus, typically by outer
Shell, power transformer and rectification circuit etc. are constituted；Starting current is larger when current power supply adaptor works, power consumption when standby
Height, audio-frequency noise is big, and output voltage is unstable, and the poor existing power supply adaptor of overall performance has many kinds, but existing
Power supply adaptor security is low, spread of voltage.
Utility model content
The purpose of this utility model is to provide a kind of power adapter circuit, to solve what is proposed in above-mentioned background technology
Problem.
To achieve the above object, the utility model provides following technical scheme：
A kind of power adapter circuit, including fuse F, switch S, diode D1, resistance R1, inductance L1, electric capacity C1, core
Piece IC1, chip IC 2, transformer T and photo-coupler；Fuse F one end connection input voltage, other end connecting valve S,
Switch S connects diode D3, diode D1 and diode D4, diode D1 connection diodes D2；The diode D2 connects successively
Meet inductance L1, resistance R1, electric capacity C1 and electric capacity C2；The resistance R2 connects electric capacity C3, electric capacity C3 connection diode D5, diode
The D pins of D5 connection chip ICs 1 and the armature winding of transformer T；BP pins connection electric capacity C4, the EN pin of the chip IC 1
Connection photo-coupler one end, photo-coupler connection resistance R3 and electric capacity C9；The secondary windings connection diode D6 of the transformer T
With electric capacity C6, electric capacity C6 connection electric capacity C7, inductance L2 and electric capacity C8, inductance L2 connection resistance R3, resistance R4 and resistance R5, resistance
R4 connects chip IC 2, electric capacity C9 and resistance R6.
As further program of the utility model：The model TNY256 of the chip IC 1.
As further program of the utility model：The model TL431C of the chip IC 2.
Compared with prior art, the beneficial effects of the utility model are：
The utility model power adapter circuit, using feedback circuit from DC output end to control chip IC1, by chip
IC1 stability contortings, with low in energy consumption, starting current is small, and the characteristics of output voltage stabilization, its performance is good, strong interference immunity, very
It is adapted to promote the use of.
Brief description of the drawings
Fig. 1 is the structural representation of power adapter circuit.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model example is carried out clearly
Chu, it is fully described by.
Fig. 1, a kind of power adapter circuit, including fuse F are referred to, S, diode D1, resistance R1, inductance is switched
L1, electric capacity C1, chip IC 1, chip IC 2, transformer T and photo-coupler；Described fuse F one end connects input voltage, another
End connecting valve S, switch S connect diode D3, diode D1 and diode D4, diode D1 connection diodes D2；Described two
Pole pipe D2 is sequentially connected inductance L1, resistance R1, electric capacity C1 and electric capacity C2；The resistance R2 connects electric capacity C3, electric capacity C3 connections two
The D pins of pole pipe D5, diode D5 connection chip IC 1 and the armature winding of transformer T；The BP pins connection of the chip IC 1
Electric capacity C4, EN pin connection photo-coupler one end, photo-coupler connection resistance R3 and electric capacity C9；The transformer T it is secondary around
Group connection diode D6 and electric capacity C6, electric capacity C6 connect electric capacity C7, inductance L2 and electric capacity C8, inductance L2 connection resistance R3, resistance
R4 and resistance R5, resistance R4 connect chip IC 2, electric capacity C9 and resistance R6；The model TNY256 of chip IC 1, the model of chip IC 2
TL431C。
Operation principle of the present utility model is：Fig. 1 is referred to, the utility model power adapter circuit, the circuit makes altogether
With three integrated circuits, chip IC 1, adjustable precise shunt regulator chip IC 2, photo-coupler, 85-265 V alternating currents warp
After over commutation filtering, high direct voltage is obtained, by inductance L1, damping resistance R1 and filter capacitor C1, C2 constitute High-frequency Interference filtering
Device, drain electrode clamping protective circuit is made up of resistance R2, electric capacity C3 and diode D5, and high frequency transformer selects FERRITE CORE, secondary
Step voltage obtains regulated output voltage+9V by diode D6, electric capacity C6, electric capacity C7, inductance L2 after electric capacity C8 rectifying and wave-filterings.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new with other concrete forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
The all changes of justice and scope are included in the utility model.Any reference in claim should not be considered as limitation involved
And claim, although moreover, it will be appreciated that the present specification is described in terms of embodiments, not each embodiment party
Formula only includes an independent technical scheme, and this narrating mode of specification is only people in the art for clarity
Member should be using specification an as entirety, and the technical scheme in each embodiment can also be through appropriately combined, form this area skill
Art personnel may be appreciated other embodiment.
Claims (3)
1. a kind of power adapter circuit, including fuse F, switchs S, diode D1, resistance R1, inductance L1, electric capacity C1, chip
IC1, chip IC 2, transformer T and photo-coupler, it is characterised in that described fuse F one end connects input voltage, the other end connects
Switch S is met, switch S connects diode D3, diode D1 and diode D4, diode D1 connection diodes D2；The diode
D2 is sequentially connected inductance L1, resistance R1, electric capacity C1 and electric capacity C2；The resistance R2 connects electric capacity C3, electric capacity C3 connection diodes
The D pins of D5, diode D5 connection chip IC 1 and the armature winding of transformer T；The BP pins connection electric capacity of the chip IC 1
C4, EN pin connection photo-coupler one end, photo-coupler connection resistance R3 and electric capacity C9；The secondary windings of the transformer T connects
Meet diode D6 and electric capacity C6, electric capacity C6 connections electric capacity C7, inductance L2 and electric capacity C8, inductance L2 connections resistance R3, resistance R4 and
Resistance R5, resistance R4 connect chip IC 2, electric capacity C9 and resistance R6.
2. power adapter circuit according to claim 1, it is characterised in that the model TNY256 of the chip IC 1.
3. power adapter circuit according to claim 1, it is characterised in that the model TL431C of the chip IC 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621271105.1U CN206195640U (en) | 2016-11-24 | 2016-11-24 | Power supply adapter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621271105.1U CN206195640U (en) | 2016-11-24 | 2016-11-24 | Power supply adapter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206195640U true CN206195640U (en) | 2017-05-24 |
Family
ID=58724836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621271105.1U Expired - Fee Related CN206195640U (en) | 2016-11-24 | 2016-11-24 | Power supply adapter circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206195640U (en) |
-
2016
- 2016-11-24 CN CN201621271105.1U patent/CN206195640U/en not_active Expired - Fee Related
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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: 20170524 Termination date: 20171124 |