CN108155782A - Flyback restores power circuit - Google Patents
Flyback restores power circuit Download PDFInfo
- Publication number
- CN108155782A CN108155782A CN201810096905.1A CN201810096905A CN108155782A CN 108155782 A CN108155782 A CN 108155782A CN 201810096905 A CN201810096905 A CN 201810096905A CN 108155782 A CN108155782 A CN 108155782A
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- Prior art keywords
- resistance
- capacitance
- parallel
- power management
- resistor
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- 230000008878 coupling Effects 0.000 claims abstract description 20
- 238000010168 coupling process Methods 0.000 claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 claims abstract description 20
- 230000005611 electricity Effects 0.000 claims description 18
- 238000002955 isolation Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000003760 hair shine Effects 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or 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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Led Devices (AREA)
Abstract
The invention discloses a kind of flybacks to restore power circuit, it includes power IC, photoelectric coupling circuit, No. eight pins of power management chip are connected with the 5th capacitance, No. five pins of power management chip connect power supply, No. seven pins ground connection of power management chip, first resistor, second resistance, 3rd resistor, 5th resistance, 6th resistance, second capacitance, third capacitance, 4th capacitance, 5th capacitance is all grounded, photoelectrical coupler anode is connected with the No.1 pin of power management chip, the cathode ground connection of photoelectrical coupler, photoelectrical coupler is in parallel with the first light emitting diode, first light emitting diode and the 8th resistor coupled in parallel, 8th resistance is connected with the 7th resistance, 7th resistance is connected with the 9th resistance, 9th resistance and the tenth resistor coupled in parallel, tenth resistance and the 11st resistor coupled in parallel.The present invention realizes limitation direct current by the resistance structure in parallel with capacitance, and by exchange, not only structure is very simple, but also the electronic component consumed is few, has saved cost.
Description
Technical field
The present invention relates to a kind of circuits, restore power circuit more particularly to a kind of flyback.
Background technology
Flyback currently on the market restores power circuit using complicated circuit connection structure, and this connection structure is not only
Equipment is wasted, and working efficiency is low and its wastes time, and does not use photoelectric coupling circuit to ensure high-pressure side and low-pressure end
Isolation, poor safety performance.
Invention content
The technical problems to be solved by the invention are to provide a kind of flyback and restore power circuit, which passes through resistance and electricity
Hold structure in parallel to realize limitation direct current, by exchange, not only structure is very simple, but also the electronic component consumed is few,
Cost is saved, the use of photoelectric coupling circuit ensure that high-pressure side is isolated with low-pressure end, while ensure these circuits or system
Electrical isolation to each other, plays the role of safety guarantee.
The present invention is to solve above-mentioned technical problem by following technical proposals：A kind of flyback restores power circuit,
It is characterized in that, including power IC, photoelectric coupling circuit, wherein power IC includes power management chip, the
One resistance, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the first capacitance, the second capacitance, third electricity
Appearance, the 4th capacitance, the 5th capacitance, photoelectric coupling module include photoelectrical coupler, slide rheostat, the first light emitting diode, the
Two light emitting diodes, the first zener diode, the second zener diode, the 6th capacitance, the 7th capacitance, the 7th resistance, the 8th electricity
Resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 12nd resistance, power IC are connected with photoelectric coupling circuit, the
One resistance is connected with the first capacitance, and the first capacitance is in parallel with the second capacitance, the first capacitance, the second capacitance and power management chip
No.1 pin is connected, and second resistance is in parallel with third capacitance, No. two pins of second resistance, third capacitance and power management chip
It is connected, the 4th capacitance is in parallel with 3rd resistor, and the 4th capacitance, the 6th resistance are connected with No. three pins of power management chip, the
Three resistance are connected with No. four pins of power management chip, the 6th resistance and the 4th resistor coupled in parallel, the 4th resistance and the 5th resistance
Series connection, No. six pins of power management chip are connected with the 4th resistance, No. eight pins and the 5th capacitance phase of power management chip
Even, No. five pins of power management chip connect power supply, No. seven pins ground connection of power management chip, first resistor, second resistance,
3rd resistor, the 5th resistance, the 6th resistance, the second capacitance, third capacitance, the 4th capacitance, the 5th capacitance are all grounded, photoelectric coupling
Device anode is connected with the No.1 pin of power management chip, and the cathode ground connection of photoelectrical coupler, photoelectrical coupler and first shines
Diodes in parallel, the first light emitting diode and the 8th resistor coupled in parallel, the 8th resistance are connected with the 7th resistance, the 7th resistance and the 9th
Resistance is connected, the 9th resistance and the tenth resistor coupled in parallel, the tenth resistance and the 11st resistor coupled in parallel, and the 11st resistance and second shines
Diode series, the second light emitting diode is in parallel with slide rheostat, and slide rheostat is connected with the 12nd resistance, the 12nd electricity
Resistance is connected with the 9th resistance, and the 9th resistance is connected with the 6th capacitance, and the 6th capacitance is connected with the first zener diode, the first voltage stabilizing
Diode is in parallel with the second zener diode, and the second zener diode is in parallel with the 7th capacitance, the 7th capacitance and the tenth resistance string
Connection, the first zener diode, the second zener diode, the second light emitting diode, slide rheostat are all grounded.
Preferably, first light emitting diode is photodiode.
Preferably, first zener diode, the second zener diode, anode one end of tube body are planar shaped, cathode
One end is semi circular surface shape.
The positive effect of the present invention is：Flyback restores power circuit by the resistance structure in parallel with capacitance come real
Direct current is now limited, by exchange, not only structure is very simple, but also the electronic component consumed is few, has saved cost, photoelectricity coupling
The use for closing circuit ensure that high-pressure side is isolated with low-pressure end, while ensure the electrical isolation of these circuits or system to each other, rise
The effect of safety guarantee is arrived.
Description of the drawings
Fig. 1 is the figure of the present invention.
Fig. 2 is the power IC figure of the present invention.
Fig. 3 is the photoelectric coupling circuit figure of the present invention.
Specific embodiment
Present pre-ferred embodiments are provided below in conjunction with the accompanying drawings, with the technical solution that the present invention will be described in detail.
As shown in Figure 1 to Figure 3, flyback of the present invention restores the power IC A and light that power circuit includes interconnection
Electric coupling circuit B, wherein power IC A include power management chip U1, first resistor R1, second resistance R2, third electricity
Hinder R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the first capacitance C1, the second capacitance C2, third capacitance C3, the 4th electricity
Hold C4, the 5th capacitance C5, photoelectric coupling module B include photoelectrical coupler U2, slide rheostat VR1, the first light emitting diode
LED1, the second Light-emitting diode LED 2, the first zener diode ZD1, the second zener diode ZD2, the 6th capacitance C6, the 7th electricity
Hold C7, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 11st resistance R11, the 12nd resistance
R12, power IC A are connected with photoelectric coupling circuit B, and first resistor R1 connects with the first capacitance C1, the first capacitance C1 with
Second capacitance C2 is in parallel, and the first capacitance C1, the second capacitance C2 are connected with the No.1 pin of power management chip U1, second resistance R2
In parallel with third capacitance C3, second resistance R2, third capacitance C3 are connected with No. two pins of power management chip U1, the 4th capacitance
C4 is in parallel with 3rd resistor R3, and the 4th capacitance C4, the 6th resistance C6 are connected with No. three pins of power management chip U1, third electricity
Resistance R3 is connected with No. four pins of power management chip U1, and the 6th resistance C6 is in parallel with the 4th resistance R4, the 4th resistance R4 and the
Five resistance R5 connect, and No. six pins of power management chip U1 are connected with the 4th resistance R4, and No. eight of power management chip U1 are drawn
Foot is connected with the 5th capacitance C5, and No. five pins of power management chip U1 connect power supply, and No. seven pins of power management chip U1 connect
Ground, first resistor R1, second resistance R2,3rd resistor R3, the 5th resistance R5, the 6th resistance R6, the second capacitance C2, third capacitance
C3, the 4th capacitance C4, the 5th capacitance C5 are grounded, the No.1 pin phase of photoelectrical coupler U2 anodes and power management chip U1
Even, the cathode ground connection of photoelectrical coupler U2, photoelectrical coupler U2 is in parallel with the first Light-emitting diode LED 1, the first light emitting diode
LED1 is in parallel with the 8th resistance R8, and the 8th resistance R8 connects with the 7th resistance R7, and the 7th resistance R7 connects with the 9th resistance R9, the
Nine resistance R9 are in parallel with the tenth resistance R10, and the tenth resistance R10 is in parallel with the 11st resistance R11, the 11st resistance R11 and second
Light-emitting diode LED 2 is connected, and the second Light-emitting diode LED 2 is in parallel with slide rheostat VR1, slide rheostat VR1 and the tenth
Two resistance R12 connect, and the 12nd resistance R12 connects with the 9th resistance R9, and the 9th resistance R9 connects with the 6th capacitance C6, the 6th electricity
Hold C6 to connect with the first zener diode ZD1, the first zener diode ZD1 is in parallel with the second zener diode ZD2, the second voltage stabilizing
Diode ZD2 is in parallel with the 7th capacitance C7, and the 7th capacitance C7 connects with the tenth resistance R10, the first zener diode ZD1, second
Zener diode ZD2, the second Light-emitting diode LED 2, slide rheostat VR1 are grounded.
The operation principle of the present invention is as follows：The first resistor that flyback is restored in power circuit is connected with the first capacitance and can be limited
Capacitor charge and discharge speed, when the power source is turned on capacitance will not saturation quickly, play the role of buffering, second resistance and third
Capacitance parallel connection can limit direct current, fill AC signal perhaps and pass through, be sufficiently amplified signal, when by amplified AC signal
During by power management chip, AC signal can be transmitted to photoelectric coupling circuit, photoelectricity by power management chip by No.1 pin
Coupler is also referred to as photoisolator or photo-coupler, sometimes abbreviation optocoupler, is a kind of using light as coupling media, passes through optical signal
Transmission realize device that defeated people and outlet chamber are electrically isolated, can between circuit or system transmission telecommunications number, ensure high-pressure side
It is isolated with low-pressure end, while ensures the electrical isolation of these circuits or system to each other, plays safety guarantee effect, photoelectric coupling electricity
Road is mainly made of photoelectrical coupler, the first light emitting diode, the second light emitting diode, wherein the first light emitting diode is light
Device, the second light emitting diode are light emitting source, and light emitting source can convert electrical signals to optical signal, and photoelectrical coupler can believe light
Number be converted into electric signal, light-receiving device can convert optical signal into electric signal, so photoelectric coupling circuit can realize electricity, light,
The conversion of electricity.
First Light-emitting diode LED 1 is photodiode, more sensitive to optical signal, can perceive light at the first time
Signal, and electric signal can be converted optical signal into.
First zener diode ZD1, the second zener diode ZD2, anode one end of tube body is planar shaped, and cathode one end is
Semi circular surface shape, for overvoltage protection.
The model of power management chip can be MT7822A, simple in structure in this way, at low cost.
In conclusion flyback of the present invention restores power circuit by the resistance structure in parallel with capacitance to realize that limitation is straight
Stream, by exchange, not only structure is very simple, but also the electronic component consumed is few, has saved cost, photoelectric coupling circuit
Using ensure that high-pressure side is isolated, while ensure the electrical isolation of these circuits or system to each other with low-pressure end, safety is played
The effect of guarantee.
Particular embodiments described above, the technical issues of to the solution of the present invention, technical solution and advantageous effect carry out
It is further described, it should be understood that the above is only a specific embodiment of the present invention, is not limited to
The present invention, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this
Within the protection domain of invention.
Claims (3)
1. a kind of flyback restores power circuit, which is characterized in that it includes power IC, photoelectric coupling circuit, wherein electricity
Source integrated circuit includes power management chip, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th
Resistance, the first capacitance, the second capacitance, third capacitance, the 4th capacitance, the 5th capacitance, photoelectric coupling module include photoelectrical coupler,
Slide rheostat, the first light emitting diode, the second light emitting diode, the first zener diode, the second zener diode, the 6th electricity
Appearance, the 7th capacitance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 12nd resistance, power supply collection
It is connected into circuit with photoelectric coupling circuit, first resistor is connected with the first capacitance, and the first capacitance is in parallel with the second capacitance, the first electricity
Appearance, the second capacitance are connected with the No.1 pin of power management chip, and second resistance is in parallel with third capacitance, second resistance, third
Capacitance is connected with No. two pins of power management chip, and the 4th capacitance is in parallel with 3rd resistor, the 4th capacitance, the 6th resistance and electricity
No. three pins of source control chip are connected, and 3rd resistor is connected with No. four pins of power management chip, the 6th resistance and the 4th
Resistor coupled in parallel, the 4th resistance are connected with the 5th resistance, and No. six pins of power management chip are connected with the 4th resistance, power management
No. eight pins of chip are connected with the 5th capacitance, and No. five pins of power management chip connect power supply, No. seven of power management chip
Pin is grounded, first resistor, second resistance, 3rd resistor, the 5th resistance, the 6th resistance, the second capacitance, third capacitance, the 4th
Capacitance, the 5th capacitance are all grounded, and photoelectrical coupler anode is connected with the No.1 pin of power management chip, and photoelectrical coupler is born
Pole be grounded, photoelectrical coupler is in parallel with the first light emitting diode, the first light emitting diode and the 8th resistor coupled in parallel, the 8th resistance and
7th resistance is connected, and the 7th resistance is connected with the 9th resistance, the 9th resistance and the tenth resistor coupled in parallel, the tenth resistance and the 11st electricity
Resistance is in parallel, and the 11st resistance is connected with the second light emitting diode, and the second light emitting diode is in parallel with slide rheostat, slides variable resistance
Device is connected with the 12nd resistance, and the 12nd resistance is connected with the 9th resistance, and the 9th resistance is connected with the 6th capacitance, the 6th capacitance with
First zener diode is connected, and the first zener diode is in parallel with the second zener diode, the second zener diode and the 7th electricity
Hold parallel connection, the 7th capacitance is connected with the tenth resistance, the first zener diode, the second zener diode, the second light emitting diode, cunning
Dynamic rheostat is all grounded.
2. flyback as described in claim 1 restores power circuit, which is characterized in that first light emitting diode is photosensitive two
Pole pipe.
3. flyback as described in claim 1 restores power circuit, which is characterized in that first zener diode, second are surely
Diode is pressed, anode one end of tube body is planar shaped, and cathode one end is semi circular surface shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810096905.1A CN108155782A (en) | 2018-01-31 | 2018-01-31 | Flyback restores power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810096905.1A CN108155782A (en) | 2018-01-31 | 2018-01-31 | Flyback restores power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108155782A true CN108155782A (en) | 2018-06-12 |
Family
ID=62459194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810096905.1A Pending CN108155782A (en) | 2018-01-31 | 2018-01-31 | Flyback restores power circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN108155782A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201336746Y (en) * | 2008-05-05 | 2009-10-28 | 汤征宁 | Constant current and voltage drive circuit for AC power supply LED |
| CN203504821U (en) * | 2013-09-17 | 2014-03-26 | 宁波市江北天瑞电器有限公司 | Light adjustment type LED constant current driving power supply |
| CN203643520U (en) * | 2013-09-29 | 2014-06-11 | 潘建峰 | Optoelectronic coupler fault detector |
| CN104470034A (en) * | 2013-09-16 | 2015-03-25 | 成都昊地科技有限责任公司 | Brightness automatic control circuit of LED table lamp |
| CN204392106U (en) * | 2015-02-06 | 2015-06-10 | 深圳市新港源技术有限公司 | Switching power supply |
| CN106914682A (en) * | 2017-01-19 | 2017-07-04 | 上海广为焊接设备有限公司 | For the control system and its control method of AC-DC argon arc welding machine |
| WO2017124744A1 (en) * | 2016-01-21 | 2017-07-27 | 广州金升阳科技有限公司 | Direct filtering type switch power supply |
| CN207853743U (en) * | 2018-01-31 | 2018-09-11 | 常州斯坦博电子科技有限公司 | Flyback restores power circuit |
-
2018
- 2018-01-31 CN CN201810096905.1A patent/CN108155782A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201336746Y (en) * | 2008-05-05 | 2009-10-28 | 汤征宁 | Constant current and voltage drive circuit for AC power supply LED |
| CN104470034A (en) * | 2013-09-16 | 2015-03-25 | 成都昊地科技有限责任公司 | Brightness automatic control circuit of LED table lamp |
| CN203504821U (en) * | 2013-09-17 | 2014-03-26 | 宁波市江北天瑞电器有限公司 | Light adjustment type LED constant current driving power supply |
| CN203643520U (en) * | 2013-09-29 | 2014-06-11 | 潘建峰 | Optoelectronic coupler fault detector |
| CN204392106U (en) * | 2015-02-06 | 2015-06-10 | 深圳市新港源技术有限公司 | Switching power supply |
| WO2017124744A1 (en) * | 2016-01-21 | 2017-07-27 | 广州金升阳科技有限公司 | Direct filtering type switch power supply |
| CN106914682A (en) * | 2017-01-19 | 2017-07-04 | 上海广为焊接设备有限公司 | For the control system and its control method of AC-DC argon arc welding machine |
| CN207853743U (en) * | 2018-01-31 | 2018-09-11 | 常州斯坦博电子科技有限公司 | Flyback restores power circuit |
Non-Patent Citations (1)
| Title |
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| 祝敏;: "也谈光电耦合器", 电子制作, no. 03, 5 March 2004 (2004-03-05), pages 52 * |
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