CN207070408U - A kind of railway passenger train LED driving power - Google Patents
A kind of railway passenger train LED driving power Download PDFInfo
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- CN207070408U CN207070408U CN201720936557.5U CN201720936557U CN207070408U CN 207070408 U CN207070408 U CN 207070408U CN 201720936557 U CN201720936557 U CN 201720936557U CN 207070408 U CN207070408 U CN 207070408U
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Abstract
The utility model discloses a kind of railway passenger train LED driving power, belong to LED driving power field, including the rectification circuit for accessing the input of train power supply, rectification being carried out to input train power supply, and the output end of constant dc is exported to LED lamp tube, also include the power factor compensation and on-off circuit being sequentially connected in series between input and output end, and pressure-stabilizing constant flow circuit, wherein：Pressure-stabilizing constant flow circuit is used for the output voltage and curent change for monitoring output end S；Power factor compensation and on-off circuit：Secondary transformer is connected by triode using the control chip output duty cycle adjustable pulse, oscillating voltage is produced at secondary transformer, and photoelectrical coupler is controlled to be opened and closed, to connect the pressure-stabilizing constant flow circuit, according to the output voltage of the pressure-stabilizing constant flow circuit monitors and output current change regulation dutycycle, so that output end output constant DC voltage 36V.
Description
Technical field
LED driving power field is the utility model is related to, more particularly to a kind of railway passenger train drives electricity with LED
Source.
Background technology
Railway passenger train widely used fluorescent tube at present, when being transformed or repair in shop, with energy-conserving and environment-protective kimonos
Fluorescent tube can be replaced by LED by the needs of business passenger, repairing factory.But current general fast passenger train is because vehicle is different, its
Vehicle power has tri- kinds of DC48V, DC110V, AC220V, and vehicle power has certain fluctuation range, DC48V power supplies
Can allowable fluctuation range be DC36V~72V, DC110V power supplies can allowable fluctuation range be DC77V~137.5V,
AC220V power supplies can allowable fluctuation range be AC187V~253V.For three kinds of above-mentioned passenger train original fluorescent lighting fixture
Different power supplies, LED driving power need to meet above-mentioned three kinds of power supply modes, need to adapt to the wide scope of three kinds of power supplies
Control source, and constant output DC36V, ensure the requirement of passenger train LED.
Utility model content
Technical problem to be solved in the utility model is the defects of being directed to background technology, to propose a kind of railway passenger train
With LED driving power, realize how to turn the control source of the wide scope of tri- kinds of power supplies of DC48V, DC110V, AC220V
It is changed to constant output DC36V.
Above-mentioned technical problem of the present utility model technical scheme is that：
A kind of railway passenger train LED driving power, including access the input of train power supply, to inputting train electrical
Source carries out the rectification circuit of rectification, and the output end S of constant dc is exported to LED lamp tube, in addition to is sequentially connected in series whole
Power factor compensation and on-off circuit, pressure-stabilizing constant flow circuit between current circuit and output end S, wherein,
Pressure-stabilizing constant flow circuit：For monitoring output end S output voltage and curent change, and feed back to power factor compensation
And on-off circuit；
Power factor compensation and on-off circuit：It includes control chip, triode, secondary transformer, photoelectrical coupler, uses
Power factor compensation is carried out in the direct current exported to rectification circuit, is passed through using the adjustable pulse of control chip output duty cycle
Triode connects secondary transformer, oscillating voltage is produced at secondary transformer by pressure-stabilizing constant flow circuit output, according to voltage stabilizing
The output voltage of constant-current circuit collection and output current change control photoelectrical coupler opening and closing, to adjust dutycycle and then change two
The size of oscillating voltage is produced at level transformer, so as to adjust the output voltage size of output end, makes output end output constant straight
Flow voltage.
Further, the concrete structure of the power factor compensation and on-off circuit includes：Control chip, two level transformation
Device, photoelectrical coupler, switching tube, triode, and the first to the 28th resistance, the first electric capacity, the 3rd electric capacity, the 4th electricity
Appearance, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the 13rd electric capacity, the first to the 5th diode；
Wherein：
Described first resistor one end is respectively coupled to rectification circuit output end, 3rd resistor one end, the 11st resistance one end,
Four electric capacity one end, the 23rd resistance one end, the 24th resistance one end, the 25th resistance one end and secondary transformer are former
One end of side winding first coil, first resistor other end coupling second resistance one end, the second resistance other end are respectively coupled to control
The pin of coremaking piece the 3rd and the 3rd electric capacity one end, the 3rd electric capacity other end are respectively coupled to the 6th resistance one end, the first electric capacity one
It is grounded behind end, the pin of control chip the 6th, the 19th resistance one end and the 20th resistance one end, the 9th resistor coupled in parallel is in the 3rd
Electric capacity；The 6th resistance other end is respectively coupled to the 5th resistance one end and photoelectrical coupler one end, the 5th resistance other end difference
The 7th resistance one end, the 8th resistance one end and the pin of control chip the 1st are coupled, after the 7th resistance other end concatenates the 5th electric capacity
Coupled respectively with the pin of control chip the 2nd and the 8th resistance other end；The 3rd resistor other end is distinguished after concatenating the 4th resistance
Coupled with the pin of control chip the 4th, the tenth resistance one end and the first electric capacity other end；
The tenth resistance other end be respectively coupled to the 18th resistance one end, switch tube grid, the 19th resistance other end,
The 20th resistance other end and the 8th electric capacity one end, the 18th resistance other end are respectively coupled to switching tube source electrode, the tenth
One end of seven resistance, the other end of the 17th resistance are connected and coupled with the pin of control chip the 7th after the 3rd diode, and the described tenth
Five resistor coupled in parallel are in the 3rd diode；
The 11st resistance other end is sequentially connected in series after the 12nd resistance, the 13rd resistance and the 14th resistance respectively
Coupled with the 6th electric capacity one end, the 7th electric capacity one end, the pin of control chip the 8th, transistor emitter, photoelectrical coupler one end,
The anode that the 6th electric capacity other end is respectively coupled to the 7th electric capacity other end, the 9th electric capacity one end and the 4th diode is followed by
Ground, the 9th electric capacity other end are respectively coupled to the 16th resistance one end, transistor collector and the 21st resistance one end,
The 16th resistance other end is respectively coupled to the 4th diode cathode and transistor base, the 21st resistance other end string
Coupled respectively with the 28th resistance one end and one end of the coil of secondary transformer primary side winding second after connecing the first diode,
The other end ground connection of the coil of secondary transformer primary side winding second, the 28th resistance other end couple control chip
5th pin；
The 4th electric capacity other end concatenate after the 22nd resistance respectively with the 23rd resistance other end, the 24th
The resistance other end, the 25th resistance other end and the coupling of the second diode cathode, the second diode anode are respectively coupled to the
The other end of the eight electric capacity other ends, switching tube drain electrode and secondary transformer primary side winding first coil；
One end of the coil of secondary transformer vice-side winding second is respectively coupled to the 13rd electricity after concatenating the 5th diode
Appearance one end and pressure-stabilizing constant flow circuit, the first diode group of secondary transformer vice-side winding first coil one end coupling, described two
The other end of level transformer secondary winding first coil and the second coil is grounded, and the 26th resistor coupled in parallel is in photoelectricity coupling
The clutch other end, described 26th resistance one end couple pressure-stabilizing constant flow circuit, the 26th electricity after concatenating the 27th resistance
Hinder the other end and couple the second diode group.
Further, the pressure-stabilizing constant flow circuit includes voltage acquisition module, current acquisition module and Voltage stabilizing module,
The voltage acquisition module includes the first operational amplifier, the 14th electric capacity and the 29th resistance；The current acquisition
Module includes the second operational amplifier, the 30th resistance, the 31st resistance, the 32nd resistance, the 33rd resistance,
34 resistance, the 35th resistance, the 36th resistance, the 37th resistance, the 38th resistance, the tenth electric capacity, the tenth
Five electric capacity and the 6th diode；The voltage stabilizing template include the 39th resistance, the 40th resistance, the 41st resistance,
42nd resistance, the 27th electric capacity, the 28th electric capacity and the 29th electric capacity；
Wherein, the first operational amplifier positive input is respectively coupled to the 33rd electricity after concatenating the 31st resistance
It is reversely defeated to hinder one end, the 32nd resistance one end, the 30th resistance one end and the 6th diode cathode, the first operational amplifier
Enter end and be respectively coupled to the 39th resistance one end, the 14th electric capacity one end and the 29th resistance one end, first computing
Amplifier out couples the 14th electric capacity other end and the second diode group other end；Another termination of 29th resistance
Ground；
The second operational amplifier positive input be respectively coupled to the 33rd resistance other end, the tenth electric capacity one end,
One end of 34th resistance and one end of the 36th resistance, the other end series connection the 35th of the 34th resistance
The other end after resistance with the 36th resistance couples, and it is another that the 32nd resistance other end is respectively coupled to the tenth electric capacity
End, the 37th resistance one end, the reverse input end of the 38th resistance one end and the second operational amplifier, the described 30th
The eight resistance other ends couple the second operational amplifier output terminal and the other end of the second diode group after concatenating the 15th electric capacity；
One end coupling of the 39th resistance other end and the 40th resistance, the other end difference coupling of the 40th resistance
Connect the first diode group other end, the 41st resistance one end, the 27th electric capacity one end, the 28th electric capacity one end, second
Behind 19 electric capacity one end, it is connected by the first inductance with output head anode, the 41st resistance other end is respectively coupled to
One end after the 27 electric capacity other ends, the 28th electric capacity other end, the 29th electric capacity other end with the 42nd resistance
Couple, after the other end the 37th resistance other end of coupling of the 42nd resistance, pass through the second inductance and negative pole of output end connects
Connect.
Further, the control chip model L6562D, its adjustable pulse of the 7th pin output duty cycle.
Further, it is connected to an anti-jamming circuit between the input S and rectification circuit.
Further, it is connected with fuse between the input S and anti-jamming circuit.
The train power supply includes DC48V, DC110V and AC220V, output end output constant DC voltage 36V.
The utility model compared with prior art, has following technique effect using above technical scheme：
The LED driving power had both met different passenger train power inputs, and did not changed the installation of former fluorescent lighting fixture
Structure and fixed position, when the supply voltage of train inputs DC48V, DC110V, AC220V, by power factor compensation and open
Direct current 36V is exported after powered-down road, pressure-stabilizing constant flow circuit；The utility model becomes in the wide scope of above-mentioned three kinds of different power supplies
During change, make LED normal work, it is unaffected.
Brief description of the drawings
Fig. 1 is the schematic diagram that the utility model is used to embody railway passenger train LED driving power.
In figure：1st, anti-jamming circuit；2nd, rectification circuit；3rd, power factor compensation and on-off circuit；4th, pressure-stabilizing constant flow circuit.
Fig. 2 is circuit connection signal block diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of railway passenger train LED driving power, the input of access train power supply is included
End, the rectification circuit 2 that rectification is carried out to input train power supply, the output end S, Yi Jiyi of constant dc are exported to LED lamp tube
The secondary power factor compensation being serially connected between rectification circuit 2 and output end S and on-off circuit 3, pressure-stabilizing constant flow circuit 4.
Wherein, pressure-stabilizing constant flow circuit 4：For monitoring output end S output voltage and curent change, and feed back to power because
Number compensation and on-off circuit 3；
Power factor compensation and on-off circuit 3：It includes control chip, triode, secondary transformer, photoelectrical coupler,
Direct current for being exported to rectification circuit 2 carries out power factor compensation, utilizes the adjustable pulse of control chip output duty cycle
Secondary transformer is connected by triode, oscillating voltage is produced at secondary transformer by pressure-stabilizing constant flow circuit output, according to
The output voltage of pressure-stabilizing constant flow circuit collection and output current change control photoelectrical coupler opening and closing, to adjust dutycycle and then change
Become at secondary transformer and produce the size of oscillating voltage, so as to adjust output end S output voltage size, export output end S
Constant DC voltage.
As shown in figure 1, the concrete structure of power factor compensation and on-off circuit 3 includes：Control chip, secondary transformer,
Photoelectrical coupler, switching tube, triode, and the first to the 28th resistance, the first electric capacity, the 3rd electric capacity, the 4th electric capacity,
Five electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the 13rd electric capacity, the first to the 5th diode；Wherein：
First resistor one end is respectively coupled to the output end of rectification circuit 2,3rd resistor one end, the 11st resistance one end, the 4th
Electric capacity one end, the 23rd resistance one end, the 24th resistance one end, the 25th resistance one end and secondary transformer primary side
One end of winding first coil, first resistor other end coupling second resistance one end, the second resistance other end are respectively coupled to control
The pin of chip the 3rd and the 3rd electric capacity one end, the 3rd electric capacity other end be respectively coupled to the 6th resistance one end, first electric capacity one end,
It is grounded behind the pin of control chip the 6th, the 19th resistance one end and the 20th resistance one end, the 9th resistor coupled in parallel is in the 3rd electricity
Hold；The 6th resistance other end is respectively coupled to the 5th resistance one end and photoelectrical coupler one end, the 5th resistance other end difference coupling
The 7th resistance one end, the 8th resistance one end and the pin of control chip the 1st are connect, the 7th resistance other end divides after concatenating the 5th electric capacity
Do not coupled with the pin of control chip the 2nd and the 8th resistance other end；The 3rd resistor other end concatenate the 4th resistance after respectively with
The pin of control chip the 4th, the tenth resistance one end and the coupling of the first electric capacity other end；
The tenth resistance other end is respectively coupled to the 18th resistance one end, switch tube grid, the 19th resistance other end, second
The ten resistance other ends and the 8th electric capacity one end, the 18th resistance other end are respectively coupled to switching tube source electrode, the 17th resistance
One end, the other end of the 17th resistance are connected and coupled with the pin of control chip the 7th after the 3rd diode, the 15th resistor coupled in parallel in
3rd diode；
The 11st resistance other end is sequentially connected in series after the 12nd resistance, the 13rd resistance and the 14th resistance respectively with
Six electric capacity one end, the 7th electric capacity one end, the pin of control chip the 8th, transistor emitter, the coupling of photoelectrical coupler one end, the 6th
The electric capacity other end is grounded after being respectively coupled to the anode of the 7th electric capacity other end, the 9th electric capacity one end and the 4th diode, and the 9th
The electric capacity other end is respectively coupled to the 16th resistance one end, transistor collector and the 21st resistance one end, the 16th resistance
The other end is respectively coupled to the 4th diode cathode and transistor base, after the 21st resistance other end concatenates the first diode
Coupled respectively with the 28th resistance one end and one end of the coil of secondary transformer primary side winding second, secondary transformer primary side
The other end ground connection of the coil of winding second, the 28th resistance other end coupling pin of control chip the 5th；
The 4th electric capacity other end concatenate the 22nd resistance after respectively with the 23rd resistance other end, the 24th resistance
The other end, the 25th resistance other end and the coupling of the second diode cathode, the second diode anode are respectively coupled to the 8th electricity
Hold the other end of the other end, switching tube drain electrode and secondary transformer primary side winding first coil；
One end of the coil of secondary transformer vice-side winding second is respectively coupled to the 13rd electric capacity one after concatenating the 5th diode
End and pressure-stabilizing constant flow circuit, secondary transformer vice-side winding first coil one end couple the first diode group, secondary transformer
The other end of vice-side winding first coil and the second coil is grounded, the 26th resistor coupled in parallel in the photoelectrical coupler other end,
26th resistance one end couples pressure-stabilizing constant flow circuit, the 26th resistance other end coupling second after concatenating the 27th resistance
Diode group.
Pressure-stabilizing constant flow circuit includes voltage acquisition module, current acquisition module and Voltage stabilizing module, voltage acquisition module
Include the first operational amplifier, the 14th electric capacity and the 29th resistance；Current acquisition module includes the second computing and put
Big device, the 30th resistance, the 31st resistance, the 32nd resistance, the 33rd resistance, the 34th resistance, the 35th
Resistance, the 36th resistance, the 37th resistance, the 38th resistance, the tenth electric capacity, the 15th electric capacity and the six or two pole
Pipe；Voltage stabilizing template includes the 39th resistance, the 40th resistance, the 41st resistance, the 42nd resistance, the 27th electricity
Appearance, the 28th electric capacity and the 29th electric capacity；
Wherein, the first operational amplifier positive input is respectively coupled to the 33rd resistance one after concatenating the 31st resistance
End, the 32nd resistance one end, the 30th resistance one end and the 6th diode cathode, the first operational amplifier reverse input end
Couple the 39th resistance one end, the 14th electric capacity one end and the 29th resistance one end, the first operational amplifier output terminal
Couple the 14th electric capacity other end and the second diode group other end；
Second operational amplifier positive input the 33rd resistance other end of coupling and the tenth electric capacity one end, the 30th
Four resistance, the 35th resistance, the 36th resistance are sequentially connected in series, and are parallel to the 33rd resistance and the second operational amplifier
Node, the 32nd resistance other end is respectively coupled to the tenth electric capacity other end, the 37th resistance one end, the 38th resistance
One end and the reverse input end of the second operational amplifier, the 38th resistance other end concatenate the fortune of the 15th electric capacity coupling second
Calculate amplifier out and the second diode group, the 37th resistance other end coupling output end S；
The 39th resistance other end couples the first diode group other end, the 41st resistance after concatenating the 40th resistance
One end, the 27th electric capacity one end, the 28th electric capacity one end, the 29th electric capacity one end and output end S, the 41st electricity
The resistance other end is gone here and there after being respectively coupled to the 27th electric capacity other end, the 28th electric capacity other end, the 29th electric capacity other end
Meet the 42nd resistance coupling output end S.
As a kind of preferred embodiment of the present utility model, control chip model L6562D, the output of its 7th pin accounts for
Sky is than adjustable pulse.
As a kind of preferred embodiment of the present utility model, an anti-interference electricity is connected between input S and rectification circuit 2
Road 1.
As a kind of preferred embodiment of the present utility model, fuse is connected between input S and anti-jamming circuit.
Train power supply includes DC48V, DC110V and AC220V, output end S output constant DC voltages 36V.
Specific implementation is described as follows：
When the supply voltage of train inputs DC48V, DC110V, AC220V, filtered by anti-jamming circuit 1, process is whole
Current circuit 2 converts alternating current to direct current, carries out power factor compensation to the direct current that rectification circuit 2 exports, utilizes control
The adjustable pulse of chip output duty cycle connects secondary transformer by triode, and oscillating voltage is produced at secondary transformer and is led to
Pressure-stabilizing constant flow circuit output is crossed, output voltage and output current the change control photoelectrical coupler gathered according to pressure-stabilizing constant flow circuit
Opening and closing, to adjust dutycycle and then change the size of generation oscillating voltage at secondary transformer, so as to adjust the output of output end
Voltage swing, makes output end export constant DC voltage, and the LED driving power had both met that different passenger train power supplys was defeated
Enter, and do not change mounting structure and the fixed position of former fluorescent lighting fixture, train supply voltage input DC48V, DC110V,
It is defeated after anti-jamming circuit 1, rectification circuit 2, power factor compensation and on-off circuit 3, pressure-stabilizing constant flow circuit 4 during AC220V
Go out direct current 36V；The utility model makes LED normal work, no in the wide scope change of above-mentioned three kinds of different power supplies
It is impacted.
This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model
Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but
As long as all protected in right of the present utility model by Patent Law.
Claims (7)
1. a kind of railway passenger train LED driving power, including access the input of train power supply, to inputting train power supply
The rectification circuit of rectification is carried out, and the output end of constant dc is exported to LED lamp tube, it is characterized in that：Also include going here and there successively
Power factor compensation and on-off circuit, the pressure-stabilizing constant flow circuit being connected between rectification circuit and output end, wherein,
Pressure-stabilizing constant flow circuit：For monitoring the output voltage and curent change of output end, and feed back to power factor compensation and open
Powered-down road；
Power factor compensation and on-off circuit：It includes control chip, triode, secondary transformer, photoelectrical coupler, for pair
The direct current of rectification circuit output carries out power factor compensation, passes through three poles using the adjustable pulse of control chip output duty cycle
Pipe connects secondary transformer, oscillating voltage is produced at secondary transformer by pressure-stabilizing constant flow circuit output, according to pressure-stabilizing constant flow
The output voltage of circuit collection and output current change control photoelectrical coupler opening and closing, are become with adjusting dutycycle and then changing two level
The size of oscillating voltage is produced at depressor, so as to adjust the output voltage size of output end, output end is exported constant dc
Pressure.
2. a kind of railway passenger train LED driving power according to claim 1, it is characterized in that：The power because
The concrete structure of number compensation and on-off circuit includes：Control chip, secondary transformer, photoelectrical coupler, switching tube, triode,
And first to the 28th resistance, the first electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity,
8th electric capacity, the 9th electric capacity, the 13rd electric capacity, the first to the 5th diode；Wherein：
Described first resistor one end is respectively coupled to rectification circuit output end, 3rd resistor one end, the 11st resistance one end, the 4th electricity
Hold one end, the 23rd resistance one end, the 24th resistance one end, the 25th resistance one end and secondary transformer primary side around
One end of group first coil, first resistor other end coupling second resistance one end, the second resistance other end are respectively coupled to control core
The pin of piece the 3rd and the 3rd electric capacity one end, the 3rd electric capacity other end are respectively coupled to the 6th resistance one end, first electric capacity one end, control
It is grounded behind the pin of coremaking piece the 6th, the 19th resistance one end and the 20th resistance one end, the 9th resistor coupled in parallel is in the 3rd electric capacity；
The 6th resistance other end is respectively coupled to the 5th resistance one end and photoelectrical coupler one end, and the 5th resistance other end is respectively coupled to
Seven resistance one end, the 8th resistance one end and the pin of control chip the 1st, the 7th resistance other end concatenate the 5th electric capacity after respectively with
The pin of control chip the 2nd and the coupling of the 8th resistance other end；The 3rd resistor other end concatenate the 4th resistance after respectively with control
The pin of chip the 4th, the tenth resistance one end and the coupling of the first electric capacity other end；
The tenth resistance other end is respectively coupled to the 18th resistance one end, switch tube grid, the 19th resistance other end, second
The ten resistance other ends and the 8th electric capacity one end, the 18th resistance other end are respectively coupled to switching tube source electrode, the 17th electricity
One end of resistance, the other end of the 17th resistance are connected and coupled with the pin of control chip the 7th after the 3rd diode, and the 15th resistance is simultaneously
It is coupled to the 3rd diode；
The 11st resistance other end is sequentially connected in series after the 12nd resistance, the 13rd resistance and the 14th resistance respectively with
Six electric capacity one end, the 7th electric capacity one end, the pin of control chip the 8th, transistor emitter, the coupling of photoelectrical coupler one end, it is described
The 6th electric capacity other end is grounded after being respectively coupled to the anode of the 7th electric capacity other end, the 9th electric capacity one end and the 4th diode,
The 9th electric capacity other end is respectively coupled to the 16th resistance one end, transistor collector and the 21st resistance one end, institute
State the 16th resistance other end and be respectively coupled to the 4th diode cathode and transistor base, the 21st resistance other end concatenation
Coupled respectively with the 28th resistance one end and one end of the coil of secondary transformer primary side winding second after first diode, institute
State the other end ground connection of the coil of secondary transformer primary side winding second, the 28th resistance other end coupling control chip the
5 pins；
The 4th electric capacity other end concatenate after the 22nd resistance respectively with the 23rd resistance other end, the 24th resistance
The other end, the 25th resistance other end and the coupling of the second diode cathode, the second diode anode are respectively coupled to the 8th electricity
Hold the other end of the other end, switching tube drain electrode and secondary transformer primary side winding first coil；
One end of the coil of secondary transformer vice-side winding second is respectively coupled to the 13rd electric capacity one after concatenating the 5th diode
End and pressure-stabilizing constant flow circuit, secondary transformer vice-side winding first coil one end couple the first diode group, and the two level becomes
The other end of depressor vice-side winding first coil and the second coil is grounded, and the 26th resistor coupled in parallel is another in photoelectrical coupler
End, the 26th resistance one end couple pressure-stabilizing constant flow circuit, the coupling of the 26th resistance other end after concatenating the 27th resistance
Second diode group.
3. a kind of railway passenger train LED driving power according to claim 2, it is characterized in that：The voltage stabilizing is permanent
Current circuit includes voltage acquisition module, current acquisition module and Voltage stabilizing module, and the voltage acquisition module includes first
Operational amplifier, the 14th electric capacity and the 29th resistance；The current acquisition module includes the second operational amplifier,
30 resistance, the 31st resistance, the 32nd resistance, the 33rd resistance, the 34th resistance, the 35th resistance,
36 resistance, the 37th resistance, the 38th resistance, the tenth electric capacity, the 15th electric capacity and the 6th diode；It is described steady
Pressuring template includes the 39th resistance, the 40th resistance, the 41st resistance, the 42nd resistance, the 27th electric capacity,
28 electric capacity and the 29th electric capacity；
Wherein, the first operational amplifier positive input is respectively coupled to the 33rd resistance one after concatenating the 31st resistance
End, the 32nd resistance one end, the 30th resistance one end and the 6th diode cathode, the first operational amplifier reverse input end
It is respectively coupled to the 39th resistance one end, the 14th electric capacity one end and the 29th resistance one end, first operation amplifier
Device output end couples the 14th electric capacity other end and the second diode group other end；The other end ground connection of 29th resistance；
The second operational amplifier positive input is respectively coupled to the 33rd resistance other end, the tenth electric capacity one end, the 3rd
One end of 14 resistance and one end of the 36th resistance, the other end the 35th resistance of series connection of the 34th resistance
Coupled afterwards with the other end of the 36th resistance, the 32nd resistance other end is respectively coupled to the tenth electric capacity other end, the
The reverse input end of 37 resistance one end, the 38th resistance one end and the second operational amplifier, the 38th electricity
The resistance other end couples the second operational amplifier output terminal and the other end of the second diode group after concatenating the 15th electric capacity；
One end coupling of the 39th resistance other end and the 40th resistance, the other end of the 40th resistance are respectively coupled to the
The one diode group other end, the 41st resistance one end, the 27th electric capacity one end, the 28th electric capacity one end, the 29th
Behind electric capacity one end, it is connected by the first inductance with output head anode, the 41st resistance other end is respectively coupled to the 20th
One end after the seven electric capacity other ends, the 28th electric capacity other end, the 29th electric capacity other end with the 42nd resistance couples,
After the other end of 42nd resistance couples the 37th resistance other end, it is connected by the second inductance with negative pole of output end.
4. a kind of railway passenger train LED driving power according to claim 2, it is characterized in that：The control core
Piece model L6562D, its adjustable pulse of the 7th pin output duty cycle.
5. a kind of railway passenger train LED driving power according to claim 1, it is characterized in that：The input
An anti-jamming circuit is connected between rectification circuit.
6. a kind of railway passenger train LED driving power according to claim 5, it is characterized in that：The input
Fuse is connected between anti-jamming circuit.
7. a kind of railway passenger train LED driving power according to claim 1, it is characterized in that：The train electrical
Source includes DC48V, DC110V and AC220V, output end output constant DC voltage 36V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720936557.5U CN207070408U (en) | 2017-07-28 | 2017-07-28 | A kind of railway passenger train LED driving power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720936557.5U CN207070408U (en) | 2017-07-28 | 2017-07-28 | A kind of railway passenger train LED driving power |
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| CN207070408U true CN207070408U (en) | 2018-03-02 |
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|---|---|---|---|
| CN201720936557.5U Expired - Fee Related CN207070408U (en) | 2017-07-28 | 2017-07-28 | A kind of railway passenger train LED driving power |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108430136A (en) * | 2018-04-28 | 2018-08-21 | 福建省两岸照明节能科技有限公司 | A kind of LED streetlamp power source and its control method of integrated LoRa wireless communication techniques |
| CN113258922A (en) * | 2021-06-16 | 2021-08-13 | 上海芯龙半导体技术股份有限公司南京分公司 | Drive circuit and power supply system |
-
2017
- 2017-07-28 CN CN201720936557.5U patent/CN207070408U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108430136A (en) * | 2018-04-28 | 2018-08-21 | 福建省两岸照明节能科技有限公司 | A kind of LED streetlamp power source and its control method of integrated LoRa wireless communication techniques |
| CN108430136B (en) * | 2018-04-28 | 2023-12-05 | 福建省两岸照明节能科技有限公司 | LED street lamp power supply integrating LoRa wireless communication technology and control method thereof |
| CN113258922A (en) * | 2021-06-16 | 2021-08-13 | 上海芯龙半导体技术股份有限公司南京分公司 | Drive circuit and power supply system |
| CN113258922B (en) * | 2021-06-16 | 2021-10-08 | 上海芯龙半导体技术股份有限公司南京分公司 | Drive circuit and power supply system |
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Effective date of registration: 20180214 Address after: No. 40, Rong Hua Road, economic development zone of the river an County, Chuzhou, Anhui Patentee after: Chuzhou kang'ao high iron fittings Co. Ltd. Address before: No. 5, outside Jinchuan gate, Drum Tower District, Nanjing, Jiangsu Co-patentee before: Nanjing xianchuang Electronics Technology Co. Ltd. Patentee before: Huang Mingshan |
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| 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: 20180302 Termination date: 20190728 |