CN111405713A - L ED driving power supply and method for adjusting L ED driving power supply output parameters by using magnetic field - Google Patents
L ED driving power supply and method for adjusting L ED driving power supply output parameters by using magnetic field Download PDFInfo
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Abstract
The invention relates to an L ED driving power supply and a method for adjusting L ED driving power supply output parameters by utilizing a magnetic field.A magnetic field detection circuit detects the magnetic field direction of a magnetic field generated by a magnetic field generating device, the magnetic field direction comprises an N-pole magnetic field and an S-pole magnetic field, the magnetic field detection circuit generates a control signal according to the magnetic field direction, and adjusts the output parameters of a L ED driving power supply according to the control signal.
Description
Technical Field
The invention relates to the field of L ED (electronic device) driving power supplies, in particular to a L ED driving power supply and a method for adjusting output parameters of a L ED driving power supply by using a magnetic field.
Background
L ED lamp is a new lighting product, receives more and more attention from all countries under the situation of increasingly tense global energy, has multiple characteristics which are not possessed by the traditional lighting product, high light efficiency, high energy saving, long service life and no pollution, and is nearly ideal lighting equipment, but the price is higher and becomes the greatest resistance for popularization.
L ED driving power supply is used as the core component of the whole lighting product, the price and the service life are directly determined, the cost of power supply manufacture and application is more important to be reasonably reduced on the premise of ensuring reliability, most power supplies in the market are matched with light sources in a constant current mode, each type of power supply parameter can only be matched with the light sources one by one, or the external structure of the driving is damaged and added with a potentiometer to match limited light sources, the product cost is increased undoubtedly, the reliability and the application environment are reduced.
In addition, the conventional L ED driving power supply has the defects that a L ED light source is lightened in a constant-current mode, most of the power supply is output in a constant-current mode, a terminal and the light source are narrow in matching mode, the cost of a production method is high, the cost of a lamp is high, certain obstruction is brought to application and popularization, and although some power supplies can adjust output parameters, the whole structure is damaged, and the application occasions are limited (the waterproof grade is reduced).
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an L ED driving power supply and a method for adjusting L ED driving power supply output parameters by using a magnetic field, aiming at the above-mentioned defects of the prior art.
The technical scheme adopted for solving the technical problems is that an L ED driving power supply is constructed and comprises a power input and control circuit, a magnetic transmission and electrical isolation circuit, a power output and control circuit and a first photoelectric isolation feedback circuit, wherein the input end of the power input and control circuit is connected with an alternating current power supply, the output end of the power input and control circuit is connected with the input end of the power output and control circuit through the magnetic transmission and electrical isolation circuit, the magnetic transmission and electrical isolation circuit converts alternating current into direct current, the power output and control circuit is connected with the power input and control circuit through the first photoelectric isolation feedback circuit, the power input and control circuit controls output according to a feedback signal provided by the first photoelectric isolation feedback circuit, the output end of the power output and control circuit is connected with a L ED load, and the L ED driving power supply further comprises a magnetic field generating device and a magnetic field detection circuit;
the power supply output and control circuit feeds back a feedback signal corresponding to the control signal to the power supply input and control circuit through the first photoelectric isolation feedback circuit, and the power supply input and control circuit controls the output parameter of the L ED driving power supply according to the feedback signal.
Furthermore, the L ED driving power supply of the invention also comprises a second photoelectric isolation feedback circuit, and the magnetic field detection circuit is connected with the power supply output and control circuit through the second photoelectric isolation feedback circuit;
and the magnetic field detection circuit transmits the control signal to the power output and control circuit after the control signal is converted by the second photoelectric isolation feedback circuit.
Furthermore, the magnetic field generating device in the L ED driving power supply is a magnet, and the control signal comprises a high level and a low level;
the magnetic field detection circuit generates a high level when the N pole of the magnet is close to the magnetic field detection circuit, and the magnetic field detection circuit generates a low level when the S pole of the magnet is close to the magnetic field detection circuit; or
The magnetic field detection circuit generates a high level when the S pole of the magnet is close to the magnetic field detection circuit, and the magnetic field detection circuit generates a low level when the N pole of the magnet is close to the magnetic field detection circuit.
Furthermore, the magnetic field generating device in the L ED driving power supply is an electromagnetic generator, and the control signal comprises a high level and a low level;
the magnetic field detection circuit generates a high level when the electromagnetic generator generates an N-pole magnetic field, and the magnetic field detection circuit generates a low level when the electromagnetic generator generates an S-pole magnetic field; or
The magnetic field detection circuit generates a high level when the electromagnetic generator generates an S-pole magnetic field, and the magnetic field detection circuit generates a low level when the electromagnetic generator generates an N-pole magnetic field.
Further, in the L ED driving power supply of the invention, the power input and control circuit controlling the output parameter of the L ED driving power supply according to the feedback signal comprises the power input and control circuit adjusting the duty ratio of a PWM signal according to the feedback signal to control the output parameter of the L ED driving power supply;
the magnetic field detection circuit is an induction coil or an electromagnetic switch.
In addition, the invention also provides a method for regulating L ED driving power supply output parameters by using a magnetic field, wherein the L ED driving power supply comprises a magnetic field generating device and a magnetic field detection circuit, and the method comprises the following steps:
s1, the magnetic field detection circuit detects the magnetic field direction of the magnetic field generated by the magnetic field generating device, and the magnetic field direction comprises an N-pole magnetic field and an S-pole magnetic field;
s2, the magnetic field detection circuit generates a control signal according to the magnetic field direction;
and S3, adjusting the output parameters of the L ED driving power supply according to the control signal.
Further, in the method for adjusting L ED driving power output parameters by using magnetic field according to the present invention, the magnetic field generating device is a magnet, and the step S1 includes S11, the magnetic field detecting circuit detecting a magnetic field direction of the magnet, the magnetic field direction including an N-pole magnetic field and an S-pole magnetic field;
the step S2 includes: s211, when the N pole of the magnet is close to the magnetic field detection circuit, the magnetic field detection circuit generates a high level, and when the S pole of the magnet is close to the magnetic field detection circuit, the magnetic field detection circuit generates a low level; or
S212, when the S pole of the magnet is close to the magnetic field detection circuit, the magnetic field detection circuit generates a high level, and when the N pole of the magnet is close to the magnetic field detection circuit, the magnetic field detection circuit generates a low level.
Further, in the method for adjusting L ED driving power output parameters by using magnetic field according to the present invention, the magnetic field generating device is an electromagnetic generator, and the step S1 includes S12, the magnetic field detecting circuit detecting a magnetic field direction of a magnetic field generated by the electromagnetic generator, the magnetic field direction including an N-pole magnetic field and an S-pole magnetic field;
the step S2 includes: s221, when the electromagnetic generator generates an N-pole magnetic field, the magnetic field detection circuit generates a high level, and when the electromagnetic generator generates an S-pole magnetic field, the magnetic field detection circuit generates a low level; or
S222, when the electromagnetic generator generates an S-pole magnetic field, the magnetic field detection circuit generates a high level, and when the electromagnetic generator generates an N-pole magnetic field, the magnetic field detection circuit generates a low level.
Further, in the method for adjusting L ED driving power output parameters by using magnetic field according to the present invention, the step S3 includes:
s31, a control signal sent by the magnetic field detection circuit is converted by a second photoelectric isolation feedback circuit and then sent to a power output and control circuit of the L ED driving power supply;
s32, the power output and control circuit sends a feedback signal corresponding to the control signal to a power input and control circuit of the L ED driving power supply through a first photoelectric isolation feedback circuit of the L ED driving power supply;
s33, the power input and control circuit controls the output parameter of the L ED driving power supply according to the feedback signal.
Further, in the method for driving power output parameters by using magnetic field regulation L ED according to the present invention, the step S33 includes the power input and control circuit regulating the duty ratio of the PWM signal according to the feedback signal provided by the first photo-isolation feedback circuit to control the output parameters.
The L ED driving power supply and the method for adjusting L ED driving power supply output parameters by using the magnetic field have the advantages that the implementation principle is simple, the output of different parameters can be realized, different forms of light sources are matched, the application and maintenance of a terminal are greatly reduced, the management cost of a manufacturing end is reduced, the production efficiency of a product is improved, the price of a driving product is greatly reduced, and the novel lighting product is beneficial to large-scale popularization and use.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic structural diagram of an L ED driving power supply according to an embodiment;
fig. 2 is a schematic structural diagram of an L ED driving power supply according to an embodiment;
fig. 3 is a flowchart of a method for driving a power supply output parameter using magnetic field regulation L ED according to an embodiment.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
Example 1
Referring to fig. 1, the L ED driving power supply of this embodiment includes a power input and control circuit 10, a magnetic transmission and electrical isolation circuit 20, a power output and control circuit 30, and a first optical electrical isolation feedback circuit 40, wherein the power input and control circuit 10 is configured to control a magnitude of energy required by a subsequent stage according to a feedback signal, the magnetic transmission and electrical isolation circuit 20 is configured to change power and perform energy transfer and isolate a primary stage from a secondary stage to meet a safety requirement, the power output and control circuit 30 is configured to perform a comparison operation on an acquired signal and a reference signal and feed back a generated feedback signal to the power input and control circuit 10, and the first optical electrical isolation feedback circuit 40 also improves power safety by using optical signal transfer.
The input end of the power input and control circuit 10 is connected with an alternating current power supply, the output end of the power input and control circuit 10 is connected with the input end of the power output and control circuit 30 through the magnetic transmission and electric isolation circuit 20, the magnetic transmission and electric isolation circuit 20 converts alternating current into direct current, the power output and control circuit 30 is connected with the power input and control circuit 10 through the first photoelectric isolation feedback circuit 40, the power input and control circuit 10 controls output according to a feedback signal provided by the first photoelectric isolation feedback circuit 40, the output end of the power output and control circuit 30 is connected with L ED load, and the L ED driving power supply further comprises a magnetic field generating device 50 and a magnetic field detecting circuit 60.
The magnetic field generating device 50 generates a directional magnetic field according to control requirements, the magnetic field detecting circuit 60 is used for detecting the direction of the magnetic field and generating a control signal, the magnetic field detecting circuit 60 is connected with the power output and control circuit 30 and transmits the generated control signal to the power output and control circuit 30, the power output and control circuit 30 feeds back a feedback signal corresponding to the control signal to the power input and control circuit 10 through the first photoelectric isolation feedback circuit 40, and the power input and control circuit 10 controls L ED driving power output parameters such as output voltage and output current according to the feedback signal.
Alternatively, the L ED driving power supply of this embodiment, wherein the power input and control circuit 10 controls L ED driving power supply output parameters according to the feedback signal, includes the power input and control circuit 10 adjusting the duty ratio of the PWM signal according to the feedback signal to control L ED driving power supply output parameters.
Alternatively, the magnetic field detection circuit 60 in the L ED driving power supply of the present embodiment may be an electronic component or circuit capable of recognizing the direction of the magnetic field, such as an induction coil or an electromagnetic switch.
The principle is simple is realized to this embodiment to can realize the output of different parameters to match the light source of different forms, alleviate the application and the maintenance at terminal greatly, reduce the administrative cost of manufacturing the end and improve the production efficiency of product, the price of drive product also has great amplitude reduction simultaneously, is favorable to this kind of novel illumination product to use widely on a larger scale.
Example 2
Referring to fig. 2, based on embodiment 1, the L ED driving power supply of this embodiment further includes a second photo-isolation feedback circuit 70, the magnetic field detection circuit 60 is connected to the power output and control circuit 30 through the second photo-isolation feedback circuit 70, and the magnetic field detection circuit 60 converts the control signal through the second photo-isolation feedback circuit 70 and transmits the converted control signal to the power output and control circuit 30.
The present embodiment transmits the control signal through the second optoelectronic isolation feedback circuit 70, so that the system is safer.
Alternatively, based on embodiments 1 and 2, the magnetic field generating device 50 in the L ED driving power supply of some embodiments is a magnet, and the control signal includes a high level and a low level, the system can be configured as follows:
when the N pole of the magnet is close to the magnetic field detection circuit 60, the magnetic field detection circuit 60 generates a high level, and when the S pole of the magnet is close to the magnetic field detection circuit 60, the magnetic field detection circuit 60 generates a low level, so that the rotation of the magnet can be realized through manual or automatic control by a user, and further, the rotation of the magnetic field is realized. Or
When the S pole of the magnet is close to the magnetic field detection circuit 60, the magnetic field detection circuit 60 generates a high level, and when the N pole of the magnet is close to the magnetic field detection circuit 60, the magnetic field detection circuit 60 generates a low level, so that the rotation of the magnet can be realized through manual or automatic control by a user, and further, the rotation of the magnetic field is realized.
Alternatively, based on embodiments 1 and 2, the magnetic field generating device 50 in the L ED driving power supply of some embodiments is an electromagnetic generator, and the control signal comprises a high level and a low level, the system can be configured as follows:
the magnetic field detection circuit 60 generates a high level when the electromagnetic generator generates an N-pole magnetic field, and the magnetic field detection circuit 60 generates a low level when the electromagnetic generator generates an S-pole magnetic field, so that the direction of the magnetic field generating the magnetic field can be changed by changing the direction of the current of the electromagnetic generator. Or
The magnetic field detection circuit 60 generates a high level when the electromagnetic generator generates an S-pole magnetic field, and the magnetic field detection circuit 60 generates a low level when the electromagnetic generator generates an N-pole magnetic field, so that the direction of the magnetic field generated by the electromagnetic generator can be changed by changing the direction of the current of the electromagnetic generator.
The principle is simple is realized to this embodiment to can realize the output of different parameters to match the light source of different forms, alleviate the application and the maintenance at terminal greatly, reduce the administrative cost of manufacturing the end and improve the production efficiency of product, the price of drive product also has great amplitude reduction simultaneously, is favorable to this kind of novel illumination product to use widely on a larger scale.
Example 3
Referring to fig. 3, the method for adjusting L ED driving power output parameters by using magnetic field of this embodiment is applied to L ED driving power, the L ED driving power includes a magnetic field generating device 50 and a magnetic field detecting circuit 60, and the method includes the following steps:
s1, the magnetic field detection circuit 60 detects the magnetic field direction of the magnetic field generated by the magnetic field generating device 50, the magnetic field direction including the N-pole magnetic field and the S-pole magnetic field.
S2, the magnetic field detection circuit 60 generates a control signal according to the magnetic field direction.
And S3, adjusting L ED drive power supply output parameters such as output voltage, output current and the like according to the control signal.
Alternatively, step S33 of the method for driving the output parameter of the power supply by using the magnetic field adjustment L ED of the present embodiment includes the power input and control circuit 10 adjusting the duty ratio of the PWM signal according to the feedback signal provided by the first photo-isolation feedback circuit 40 to control the output parameter.
Alternatively, in the method for adjusting L ED driving power output parameters by magnetic field according to the present embodiment, the magnetic field generating device 50 is a magnet, and the step S1 includes S11, detecting the magnetic field direction of the magnet by the magnetic field detecting circuit 60, wherein the magnetic field direction includes an N-pole magnetic field and an S-pole magnetic field;
step S2 includes: s211, when the N pole of the magnet is close to the magnetic field detection circuit 60, the magnetic field detection circuit 60 generates a high level, and when the S pole of the magnet is close to the magnetic field detection circuit 60, the magnetic field detection circuit 60 generates a low level; or
S212, when the S pole of the magnet is close to the magnetic field detection circuit 60, the magnetic field detection circuit 60 generates a high level, and when the N pole of the magnet is close to the magnetic field detection circuit 60, the magnetic field detection circuit 60 generates a low level.
Alternatively, in the method for adjusting L ED driving power output parameters by magnetic field according to the present embodiment, the magnetic field generating device 50 is an electromagnetic generator, and the step S1 includes S12, detecting the magnetic field direction of the magnetic field generated by the electromagnetic generator by the magnetic field detecting circuit 60, wherein the magnetic field direction includes an N-pole magnetic field and an S-pole magnetic field;
step S2 includes: s221, when the electromagnetic generator generates an N-pole magnetic field, the magnetic field detection circuit 60 generates a high level, and when the electromagnetic generator generates an S-pole magnetic field, the magnetic field detection circuit 60 generates a low level; or
S222, the magnetic field detection circuit 60 generates a high level when the electromagnetic generator generates an S-pole magnetic field, and the magnetic field detection circuit 60 generates a low level when the electromagnetic generator generates an N-pole magnetic field.
Alternatively, in the method of the present embodiment for driving the power output parameter with the magnetic field adjustment L ED, step S3 includes:
s31, the control signal sent by the magnetic field detection circuit 60 is converted by the second photoelectric isolation feedback circuit 70 and then sent to the power output and control circuit 30 of the L ED driving power supply;
s32, the power output and control circuit 30 sends the feedback signal corresponding to the control signal to the power input and control circuit 10 of the L ED driving power through the first photo-electric isolation feedback circuit 40 of the L ED driving power;
s33, the power input and control circuit 10 controls L ED driving power output parameters according to the feedback signal.
The principle is simple is realized to this embodiment to can realize the output of different parameters to match the light source of different forms, alleviate the application and the maintenance at terminal greatly, reduce the administrative cost of manufacturing the end and improve the production efficiency of product, the price of drive product also has great amplitude reduction simultaneously, is favorable to this kind of novel illumination product to use widely on a larger scale.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. An L ED driving power supply comprises a power input and control circuit (10), a magnetic transmission and electrical isolation circuit (20), a power output and control circuit (30) and a first photoelectric isolation feedback circuit (40), wherein the input end of the power input and control circuit (10) is connected with an alternating current power supply, the output end of the power input and control circuit (10) is connected with the input end of the power output and control circuit (30) through the magnetic transmission and electrical isolation circuit (20), the magnetic transmission and electrical isolation circuit (20) converts alternating current into direct current, the power output and control circuit (30) is connected with the power input and control circuit (10) through the first photoelectric isolation feedback circuit (40), the power input and control circuit (10) controls output according to a feedback signal provided by the first photoelectric isolation feedback circuit (40), the output end of the power output and control circuit (30) is used for connecting L ED loads, and the L ED driving power supply is characterized by further comprising a magnetic field generating device (50) and a magnetic field detection circuit (60);
the power supply comprises a magnetic field generating device (50), a magnetic field detecting circuit (60), a power output and control circuit (30), a power input and control circuit (10), a power output and control circuit (30), a first photoelectric isolation feedback circuit (40), a second photoelectric isolation feedback circuit (10), a power input and control circuit (10) and a power output and control circuit (L ED) driving power supply, wherein the magnetic field generating device (50) generates a directional magnetic field according to control requirements, the magnetic field detecting circuit (60) is used for detecting the direction of the magnetic field and generating control signals, the magnetic field detecting circuit (60) is connected with the power output and control circuit (30) and transmits the generated control signals to the power output and control circuit (30), the power output and control circuit (30) feeds back feedback signals corresponding to the control.
2. The L ED drive power supply of claim 1, wherein the L ED drive power supply further includes a second photo-electrically isolated feedback circuit (70), the magnetic field detection circuit (60) being connected to the power supply output and control circuit (30) through the second photo-electrically isolated feedback circuit (70);
the magnetic field detection circuit (60) converts the control signal through the second photoelectric isolation feedback circuit (70) and transmits the control signal to the power output and control circuit (30).
3. The L ED driving power supply of claim 1, wherein the magnetic field generating device (50) is a magnet, the control signal includes a high level and a low level;
when the N pole of the magnet is close to the magnetic field detection circuit (60), the magnetic field detection circuit (60) generates a high level, and when the S pole of the magnet is close to the magnetic field detection circuit (60), the magnetic field detection circuit (60) generates a low level; or
When the S pole of the magnet is close to the magnetic field detection circuit (60), the magnetic field detection circuit (60) generates a high level, and when the N pole of the magnet is close to the magnetic field detection circuit (60), the magnetic field detection circuit (60) generates a low level.
4. L ED driving power supply according to claim 1, characterized in that, the magnetic field generating device (50) is an electromagnetic generator, the control signal includes a high level and a low level;
when the electromagnetic generator generates an N-pole magnetic field, the magnetic field detection circuit (60) generates a high level, and when the electromagnetic generator generates an S-pole magnetic field, the magnetic field detection circuit (60) generates a low level; or
When the electromagnetic generator generates an S-pole magnetic field, the magnetic field detection circuit (60) generates a high level, and when the electromagnetic generator generates an N-pole magnetic field, the magnetic field detection circuit (60) generates a low level.
5. The L ED driving power supply of claim 1, wherein the power input and control circuit (10) controlling the output parameters of the L ED driving power supply according to the feedback signal includes the power input and control circuit (10) adjusting a duty cycle of a PWM signal according to the feedback signal to control the output parameters of the L ED driving power supply;
the magnetic field detection circuit (60) is an induction coil or an electromagnetic switch.
6. A method of using a magnetic field to adjust L ED drive power supply output parameters, wherein the L ED drive power supply includes a magnetic field generating device (50) and a magnetic field sensing circuit (60), the method comprising:
s1, the magnetic field detection circuit (60) detects the magnetic field direction of the magnetic field generated by the magnetic field generating device (50), wherein the magnetic field direction comprises an N-pole magnetic field and an S-pole magnetic field;
s2, the magnetic field detection circuit (60) generates a control signal according to the magnetic field direction;
and S3, adjusting the output parameters of the L ED driving power supply according to the control signal.
7. The method for adjusting L ED driving power output parameters according to claim 6, wherein the magnetic field generator (50) is a magnet, and the step S1 comprises S11, the magnetic field detection circuit (60) detects the magnetic field direction of the magnet, the magnetic field direction comprises an N-pole magnetic field and an S-pole magnetic field;
the step S2 includes: s211, when the N pole of the magnet is close to the magnetic field detection circuit (60), the magnetic field detection circuit (60) generates a high level, and when the S pole of the magnet is close to the magnetic field detection circuit (60), the magnetic field detection circuit (60) generates a low level; or
S212, when the S pole of the magnet is close to the magnetic field detection circuit (60), the magnetic field detection circuit (60) generates a high level, and when the N pole of the magnet is close to the magnetic field detection circuit (60), the magnetic field detection circuit (60) generates a low level.
8. The method for adjusting L ED driving power output parameters according to claim 6, wherein the magnetic field generating device (50) is an electromagnetic generator, and the step S1 comprises S12, the magnetic field detecting circuit (60) detects a magnetic field direction of a magnetic field generated by the electromagnetic generator, the magnetic field direction comprising an N-pole magnetic field and an S-pole magnetic field;
the step S2 includes: s221, when the electromagnetic generator generates an N-pole magnetic field, the magnetic field detection circuit (60) generates a high level, and when the electromagnetic generator generates an S-pole magnetic field, the magnetic field detection circuit (60) generates a low level; or
S222, when the electromagnetic generator generates an S-pole magnetic field, the magnetic field detection circuit (60) generates a high level, and when the electromagnetic generator generates an N-pole magnetic field, the magnetic field detection circuit (60) generates a low level.
9. The method for adjusting L ED drive power supply output parameters using magnetic fields according to claim 6, wherein the step S3 comprises:
s31, a control signal sent by the magnetic field detection circuit (60) is converted by a second photoelectric isolation feedback circuit (70) and then sent to a power output and control circuit (30) of the L ED driving power supply;
s32, the power output and control circuit (30) sends a feedback signal corresponding to the control signal to a power input and control circuit (10) of the L ED drive power supply through a first photo-electric isolation feedback circuit (40) of the L ED drive power supply;
s33, the power input and control circuit (10) controls the output parameter of the L ED driving power supply according to the feedback signal.
10. The method of claim 9, wherein the step S33 includes the power input and control circuit (10) adjusting a PWM signal duty cycle to control an output parameter based on a feedback signal provided by the first photo-isolation feedback circuit (40).
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| CN202010149566.6A CN111405713A (en) | 2020-03-06 | 2020-03-06 | L ED driving power supply and method for adjusting L ED driving power supply output parameters by using magnetic field |
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| CN202010149566.6A CN111405713A (en) | 2020-03-06 | 2020-03-06 | L ED driving power supply and method for adjusting L ED driving power supply output parameters by using magnetic field |
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| CN105472810A (en) * | 2015-12-15 | 2016-04-06 | 上海飞乐音响股份有限公司 | Apparatus for adjusting output current value of LED constant-current source through magnetic substance |
| CN105609371A (en) * | 2015-09-07 | 2016-05-25 | 南京科远驱动技术有限公司 | PWM-wave-controlled electromagnetic relay driving circuit and implementation method |
| CN107316860A (en) * | 2017-08-09 | 2017-11-03 | 东莞职业技术学院 | LED cell packaging configurations and its manufacture method |
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2020
- 2020-03-06 CN CN202010149566.6A patent/CN111405713A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609371A (en) * | 2015-09-07 | 2016-05-25 | 南京科远驱动技术有限公司 | PWM-wave-controlled electromagnetic relay driving circuit and implementation method |
| CN105472810A (en) * | 2015-12-15 | 2016-04-06 | 上海飞乐音响股份有限公司 | Apparatus for adjusting output current value of LED constant-current source through magnetic substance |
| CN107316860A (en) * | 2017-08-09 | 2017-11-03 | 东莞职业技术学院 | LED cell packaging configurations and its manufacture method |
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Application publication date: 20200710 |
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