CN204597792U - A kind of anti-interference voltage stabilizing circuit - Google Patents
A kind of anti-interference voltage stabilizing circuit Download PDFInfo
- Publication number
- CN204597792U CN204597792U CN201520352532.1U CN201520352532U CN204597792U CN 204597792 U CN204597792 U CN 204597792U CN 201520352532 U CN201520352532 U CN 201520352532U CN 204597792 U CN204597792 U CN 204597792U
- Authority
- CN
- China
- Prior art keywords
- electric capacity
- connects
- chip
- diode
- resistance
- 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
Links
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 17
- 238000004804 winding Methods 0.000 claims abstract description 20
- 230000036039 immunity Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a kind of anti-interference voltage stabilizing circuit, comprise rectifier bridge T, fuse FU, resistance R1 and transformer W, one end of described fuse FU connects 220V alternating current, the other end of fuse FU connects the port one of rectifier bridge T, the port 3 of rectifier bridge T connects the other end of 220V alternating current, the port 2 contact resistance R1 of rectifier bridge T, electric capacity C8, electric capacity C9, the anode of diode D3 and the winding N1 of transformer W.The utility model voltage stabilizing circuit follows the tracks of output voltage by feedback circuit, and the duty ratio of drain electrode output signal is regulated by Switching Power Supply control chip, thus effectively reduce the fluctuation of output voltage, therefore circuit have that structure is simple, the advantage of output voltage stabilization and strong interference immunity.
Description
Technical field
The utility model relates to a kind of voltage stabilizing circuit, specifically a kind of anti-interference voltage stabilizing circuit.
Background technology
Current stabilized voltage power supply uses extensively in the electronic device, and it can become stable voltage supply load to use the voltage transitions of instability, load electronic devices and components effectively can be protected from the impact of power network fluctuation, thus extend the useful life of electronic device.But mostly there is complex structure in existing stabilized voltage power supply, the problem that voltage regulation result is undesirable, and also interference free performance is poor, therefore needs to be improved.
Utility model content
The purpose of this utility model is the anti-interference voltage stabilizing circuit providing a kind of structure simple, easy to use, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of anti-interference voltage stabilizing circuit, comprises rectifier bridge T, fuse FU, one end of resistance R1 and transformer W, described fuse FU connects 220V alternating current, and the other end of fuse FU connects the port one of rectifier bridge T, and the port 3 of rectifier bridge T connects the other end of 220V alternating current, the port 2 contact resistance R1 of rectifier bridge T, electric capacity C8, electric capacity C9, the other end of the anode of diode D3 and the winding N1 of transformer W, resistance R1 connects the pin M of chip IC 1, the other end contact resistance R3 of electric capacity C9, electric capacity C2, electric capacity C6, the negative electrode of the port 4 of rectifier bridge T and the winding N3 of transformer W, diode D3 connects the negative electrode of diode D1, the other end of winding N1 of the anode connection transformer W of diode D1 and the pin D of chip IC 1, and the pin C of chip IC 1 connects electric capacity C1, the other end of electric capacity C2 and the pin 3 of chip IC 2, the other end of the other end contact resistance R3 of electric capacity C1, the other end contact resistance R8 of electric capacity C8, the pin A of chip IC 3, electric capacity C4, electric capacity C5, the other end of the winding N2 of the winding N2 of transformer W and output voltage U1-, transformer W connects the other end contact resistance R4 of electric capacity C3 and diode D4, electric capacity C3, and the other end of resistance R4 connects the other end of electric capacity C4, resistance R5, the negative electrode of inductance L 1 and diode D4, the other end of inductance L 1 connects the other end of electric capacity C5, resistance R7 and output voltage U1+, the other end contact resistance R6 of resistance R5 and the pin 1 of chip IC 2, the other end of the winding N3 of transformer W connects the anode of diode D2, and the negative electrode of diode D2 connects the other end of electric capacity C6 and the pin 4 of chip IC 2, and the other end of resistance R6 connects electric capacity C7, the other end of another contact resistance R7 of the pin 2 of chip IC 2 and the pin K of chip IC 3, electric capacity C7, the pin R of resistance R8 and chip IC 3.
As preferred version of the present utility model: the model of described chip IC 1 is TOP252, the model of chip IC 2 is 4N25, and the model of chip IC 3 is TL431.
As preferred version of the present utility model: described diode D3 is voltage stabilizing didoe, diode D4 is rectification diode.
Compared with prior art, the beneficial effects of the utility model are: the utility model voltage stabilizing circuit follows the tracks of output voltage by feedback circuit, and the duty ratio of drain electrode output signal is regulated by Switching Power Supply control chip, thus effectively reduce the fluctuation of output voltage, therefore circuit have that structure is simple, the advantage of output voltage stabilization and strong interference immunity.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of anti-interference voltage stabilizing circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of anti-interference voltage stabilizing circuit, comprises rectifier bridge T, fuse FU, one end of resistance R1 and transformer W, described fuse FU connects 220V alternating current, and the other end of fuse FU connects the port one of rectifier bridge T, and the port 3 of rectifier bridge T connects the other end of 220V alternating current, the port 2 contact resistance R1 of rectifier bridge T, electric capacity C8, electric capacity C9, the other end of the anode of diode D3 and the winding N1 of transformer W, resistance R1 connects the pin M of chip IC 1, the other end contact resistance R3 of electric capacity C9, electric capacity C2, electric capacity C6, the negative electrode of the port 4 of rectifier bridge T and the winding N3 of transformer W, diode D3 connects the negative electrode of diode D1, the other end of winding N1 of the anode connection transformer W of diode D1 and the pin D of chip IC 1, and the pin C of chip IC 1 connects electric capacity C1, the other end of electric capacity C2 and the pin 3 of chip IC 2, the other end of the other end contact resistance R3 of electric capacity C1, the other end contact resistance R8 of electric capacity C8, the pin A of chip IC 3, electric capacity C4, electric capacity C5, the other end of the winding N2 of the winding N2 of transformer W and output voltage U1-, transformer W connects the other end contact resistance R4 of electric capacity C3 and diode D4, electric capacity C3, and the other end of resistance R4 connects the other end of electric capacity C4, resistance R5, the negative electrode of inductance L 1 and diode D4, the other end of inductance L 1 connects the other end of electric capacity C5, resistance R7 and output voltage U1+, the other end contact resistance R6 of resistance R5 and the pin 1 of chip IC 2, the other end of the winding N3 of transformer W connects the anode of diode D2, and the negative electrode of diode D2 connects the other end of electric capacity C6 and the pin 4 of chip IC 2, and the other end of resistance R6 connects electric capacity C7, the other end of another contact resistance R7 of the pin 2 of chip IC 2 and the pin K of chip IC 3, electric capacity C7, the pin R of resistance R8 and chip IC 3.
The model of described chip IC 1 is TOP252, and the model of chip IC 2 is 4N25, and the model of chip IC 3 is TL431.Described diode D3 is voltage stabilizing didoe, and diode D4 is rectification diode.
Operation principle of the present utility model is: 220V line voltage becomes direct current after rectifier bridge T, input voltage is provided after electric capacity C1 filtering after filtering, electric capacity C3 in circuit and resistance R4 is in parallel with rectifier diode D4 after being connected in series, and this electric capacity C3 and resistance R4 is used for the electromagnetic interference of the first secondary winding output of filtering high frequency transformer T1.When the change in voltage exported, this voltage is supplied to the reference pole of three terminal regulator IC3 after resistance R7 and resistance R8 dividing potential drop, thus the output voltage of three terminal regulator IC3 is changed, thus the electric current flowing through the light-emitting diode of optocoupler IC2 changes, therefore the electric current of the transistor emitter of optocoupler IC2 changes, even if the operating current of the control end C of Switching Power Supply control chip IC1 changes, thus make Switching Power Supply control chip IC1 control the duty ratio of drain D output signal, the output voltage of output circuit is changed in the opposite direction.So just can the operating voltage of stable output and stable operating current.
Claims (3)
1. an anti-interference voltage stabilizing circuit, comprises rectifier bridge T, fuse FU, resistance R1 and transformer W, is characterized in that, one end of described fuse FU connects 220V alternating current, and the other end of fuse FU connects the port one of rectifier bridge T, and the port 3 of rectifier bridge T connects the other end of 220V alternating current, the port 2 contact resistance R1 of rectifier bridge T, electric capacity C8, electric capacity C9, the other end of the anode of diode D3 and the winding N1 of transformer W, resistance R1 connects the pin M of chip IC 1, the other end contact resistance R3 of electric capacity C9, electric capacity C2, electric capacity C6, the negative electrode of the port 4 of rectifier bridge T and the winding N3 of transformer W, diode D3 connects the negative electrode of diode D1, the other end of winding N1 of the anode connection transformer W of diode D1 and the pin D of chip IC 1, and the pin C of chip IC 1 connects electric capacity C1, the other end of electric capacity C2 and the pin 3 of chip IC 2, the other end of the other end contact resistance R3 of electric capacity C1, the other end contact resistance R8 of electric capacity C8, the pin A of chip IC 3, electric capacity C4, electric capacity C5, the other end of the winding N2 of the winding N2 of transformer W and output voltage U1-, transformer W connects the other end contact resistance R4 of electric capacity C3 and diode D4, electric capacity C3, and the other end of resistance R4 connects the other end of electric capacity C4, resistance R5, the negative electrode of inductance L 1 and diode D4, the other end of inductance L 1 connects the other end of electric capacity C5, resistance R7 and output voltage U1+, the other end contact resistance R6 of resistance R5 and the pin 1 of chip IC 2, the other end of the winding N3 of transformer W connects the anode of diode D2, and the negative electrode of diode D2 connects the other end of electric capacity C6 and the pin 4 of chip IC 2, and the other end of resistance R6 connects electric capacity C7, the other end of another contact resistance R7 of the pin 2 of chip IC 2 and the pin K of chip IC 3, electric capacity C7, the pin R of resistance R8 and chip IC 3.
2. the anti-interference voltage stabilizing circuit of one according to claim 1, is characterized in that, the model of described chip IC 1 is TOP252, and the model of chip IC 2 is 4N25, and the model of chip IC 3 is TL431.
3. the anti-interference voltage stabilizing circuit of one according to claim 1, is characterized in that, described diode D3 is voltage stabilizing didoe, and diode D4 is rectification diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520352532.1U CN204597792U (en) | 2015-05-28 | 2015-05-28 | A kind of anti-interference voltage stabilizing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520352532.1U CN204597792U (en) | 2015-05-28 | 2015-05-28 | A kind of anti-interference voltage stabilizing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204597792U true CN204597792U (en) | 2015-08-26 |
Family
ID=53933899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520352532.1U Expired - Fee Related CN204597792U (en) | 2015-05-28 | 2015-05-28 | A kind of anti-interference voltage stabilizing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204597792U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107094347A (en) * | 2017-05-25 | 2017-08-25 | 中山长星光电科技有限公司 | A kind of mosquito eradication circuit for lamp |
-
2015
- 2015-05-28 CN CN201520352532.1U patent/CN204597792U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107094347A (en) * | 2017-05-25 | 2017-08-25 | 中山长星光电科技有限公司 | A kind of mosquito eradication circuit for lamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106655431B (en) | Automatic current regulation charger circuit | |
| CN204013234U (en) | A kind of power supply unit | |
| CN202906767U (en) | Switching power supply with continuously adjustable output voltage | |
| CN103630128A (en) | Circuit of single transformer for realizing luminance building-up and maintaining functions of laser gyroscope high-voltage power supply | |
| CN203326888U (en) | Light-load and high-efficiency novel-type adapter power supply | |
| CN102810986B (en) | A kind of series topology LED switch power circuit | |
| CN204597792U (en) | A kind of anti-interference voltage stabilizing circuit | |
| CN104994659A (en) | LED dimming circuit | |
| CN104981078A (en) | LED music lamp based on Bluetooth control | |
| CN204928580U (en) | Switching power supply controls drive circuit | |
| CN204721240U (en) | Switching power supply circuit | |
| CN204598423U (en) | A kind of multiple-channel output single-ended flyback LED drive power circuit | |
| CN204442180U (en) | A kind of underloading interval puts initialization circuit | |
| CN204948408U (en) | A kind of LED music lamp based on Bluetooth control | |
| CN203167360U (en) | High efficiency environmental protection LED high voltage linear constant current driving circuit | |
| CN203554296U (en) | Power supply module for servo driver, and servo driver | |
| CN202797901U (en) | Low-power-consumption short circuit protection circuit and DC/DC convertor | |
| CN202488366U (en) | Energy-saving ultra-small switch power supply for plug and socket with electronic circuit | |
| CN202586772U (en) | Switching power supply | |
| CN205750611U (en) | A kind of regulator control circuit | |
| CN204497988U (en) | A kind of switch power source driving circuit | |
| CN204442190U (en) | A kind of doubleway output step-down controller circuit | |
| CN204349801U (en) | Switching power circuit | |
| CN203243218U (en) | Switching power supply short-circuit protection device | |
| CN207706072U (en) | A kind of electrical equipment Switching Power Supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20160528 |