CN209296892U - A kind of resistance light modulator for the test of LED drive power dimming behavior - Google Patents
A kind of resistance light modulator for the test of LED drive power dimming behavior Download PDFInfo
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- CN209296892U CN209296892U CN201821793258.1U CN201821793258U CN209296892U CN 209296892 U CN209296892 U CN 209296892U CN 201821793258 U CN201821793258 U CN 201821793258U CN 209296892 U CN209296892 U CN 209296892U
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- drive power
- switch
- led drive
- resistance
- switching group
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
Abstract
The utility model relates to a kind of resistance light modulators for the test of LED drive power dimming behavior.The resistance light modulator includes adjustable resistor RP, selection switching group, resistance measuring instrument, and selecting switching group includes: first input end, the second input terminal, the first output end, second output terminal；The both ends of adjustable resistor RP are separately connected the first input end and the second input terminal of selection switching group, and the first output end of switching group is selected to connect resistance measuring instrument, and the second output terminal of switching group is selected to connect LED drive power；The first output end and second output terminal for selecting switching group select a conducting.The utility model realizes that light modulator switches between resistance measuring instrument and light modulation line by selection switching group, it can be thus achieved and measure resistance value in light modulation, without the connection loaded and unloaded between light modulator and multimeter and light modulation line repeatedly, reduce test demounting procedure, shorten the testing time, improves testing efficiency.
Description
Technical field
The utility model relates to LED drive power testing fields, are used for LED drive power more specifically to one kind
The resistance light modulator of dimming behavior test.
Background technique
In the dimming behavior test of LED power, the light modulation line (light modulation line has a D/C voltage) of LED power needs above
An adjustable resistor is connect, by adjusting the resistance value of adjustable resistor, different resistance values passes through the light modulation mould of LED drive power
Block, to change the output electric current of LED power, thus realize the adjusting to LED light point brightness, in entire resistance dimming process,
Because different resistance values corresponding LED drive power output electric current is different, LED drive power specification can define light modulation resistance value with it is defeated
The corresponding relationship of electric current out, therefore when whether the corresponding relationship for testing resistance value and output electric current up to specification, it needs in light modulation
Monitor resistance value and output electric current.But in actual test, if LED power light modulation line directly connects with resistance light modulator and multimeter
Connect, multimeter test resistance value be it is incorrect, because light modulation line itself output have a voltage, light modulation line has equivalent internal resistance,
Therefore multimeter has carried the resistance of voltage (voltage above light modulation line) in measurement, multimeter is can not to pass through internal calculation
(Ohm's law calculating) correctly reads the resistance value above resistance light modulator.
General resistance light modulator does not have change-over switch, is exactly an adjustable resistor, and resistor exports two lines, first
Resistance light modulator is connect with multimeter, test resistance resistance value, then releases the connection with multimeter, then connect with LED light modulation line,
Carry out light modulation testing current；If a LED drive power needs to test light modulation line in 100K Ω, 90K Ω, 80K Ω ... 10K
Corresponding output electric current under Ω, 0 Ω (11 resistance value points) resistance value, then light modulator needs repeatedly between multimeter and light modulation line
Handling 22 times are very inconvenient.
Utility model content
The technical problem to be solved by the present invention is to for the above-mentioned LED drive power dimming behavior of the prior art
The defect for needing to load and unload device in test process repeatedly provides a kind of resistance tune for the test of LED drive power dimming behavior
Light device.
The technical scheme adopted by the utility model to solve the technical problem is as follows: constructing a kind of for LED drive power tune
The resistance light modulator of optical property test, including adjustable resistor RP, selection switching group, resistance measuring instrument, the selection switching group
It include: first input end, the second input terminal, the first output end, second output terminal；
The both ends of the adjustable resistor RP are separately connected the first input end and the second input terminal of the selection switching group,
First output end of the selection switching group connects the resistance measuring instrument, the second output terminal connection of the selection switching group
LED drive power；
The first output end and second output terminal of the selection switching group select a conducting.
Further, the resistance light modulator described in the utility model for the test of LED drive power dimming behavior, the choosing
Selecting switching group is two grades of two waved switch SW1, the first input end and the second input terminal of described two grades of two waved switch SW1
It is correspondingly connected with the both ends of the adjustable resistor RP；
The first output end of described two grades of two waved switch SW1 connects the resistance measuring instrument, described two grades of two waves
The second output terminal of dynamic switch SW1 connects the LED drive power.
Further, the resistance light modulator described in the utility model for the test of LED drive power dimming behavior, described two
The first output end of two waved switch SW1 of shelves includes contact A+and contact A-, and the contact A+and contact A-are separately connected institute
State resistance measuring instrument；
The second output terminal of two grades of two waved switch SW1 includes contact B+ and contact B-, the contact B+ and touching
Point B- is separately connected the LED drive power.
Further, the resistance light modulator described in the utility model for the test of LED drive power dimming behavior, the choosing
Selecting switching group includes first switch K1, second switch K2, third switch K3, the 4th switch K4；
The both ends of the adjustable resistor RP connect the resistance with second switch K2 by the first switch K1 respectively
Measuring instrument；
It is driven respectively by the third switch K3 and the 4th switch K4 connection LED at the both ends of the adjustable resistor RP
Dynamic power supply.
Further, the resistance light modulator described in the utility model for the test of LED drive power dimming behavior, the choosing
Selecting switching group includes the 5th switch K5 and the 6th switch K6；
One end of the adjustable resistor RP be separately connected the resistance measuring instrument one end and the LED drive power
One end, the other end of the adjustable resistor RP connect the other end of the resistance measuring instrument, institute by the 5th switch K5
The other end for stating adjustable resistor RP connects the other end of the LED drive power by the 6th switch K6.
Further, the resistance light modulator described in the utility model for the test of LED drive power dimming behavior, the choosing
The second output terminal for selecting switching group connects the LED drive power by light modulation line.
Further, the resistance light modulator described in the utility model for the test of LED drive power dimming behavior, the choosing
The second output terminal for selecting switching group removably connects the light modulation line by conducting wire.
Further, the resistance light modulator described in the utility model for the test of LED drive power dimming behavior, it is described
The input terminal of LED drive power connects communication power supply, and the output end of the LED drive power connects LED load.
Further, it is described in the utility model for LED drive power dimming behavior test resistance light modulator, further include
Shell, the adjustable resistor RP and selection switching group are arranged in the shell；
The adjustable resistor RP is continuous resistance resistors, and the adjusting knob of the continuous resistance resistors is arranged in institute
It states on shell；
The switch button setting of the selection switching group is on the housing.
Further, the resistance light modulator described in the utility model for the test of LED drive power dimming behavior, the electricity
Resistance measuring instrument is multimeter.
A kind of resistance light modulator for the test of LED drive power dimming behavior for implementing the utility model, has following
The utility model has the advantages that the resistance light modulator includes adjustable resistor RP, selection switching group, resistance measuring instrument, selecting switching group includes: the
One input terminal, the second input terminal, the first output end, second output terminal；The both ends of adjustable resistor RP are separately connected selection switch
The first input end and the second input terminal of group select the first output end of switching group to connect resistance measuring instrument, select switching group
Second output terminal connects LED drive power；The first output end and second output terminal for selecting switching group select a conducting.This is practical new
Type realizes that light modulator switches between resistance measuring instrument and light modulation line by selection switching group, it can realizes and measures in light modulation
Resistance value reduces test demounting procedure, shortens and survey without the connection loaded and unloaded between light modulator and multimeter and light modulation line repeatedly
The time is tried, testing efficiency is improved.
Detailed description of the invention
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:
Fig. 1 is the structural schematic diagram of the utility model resistance light modulator first embodiment；
Fig. 2 is the structural schematic diagram of the utility model resistance light modulator second embodiment；
Fig. 3 is the structural schematic diagram of the utility model resistance light modulator 3rd embodiment；
Fig. 4 is the structural schematic diagram of the utility model resistance light modulator fourth embodiment.
Specific embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, now control attached drawing is detailed
Illustrate specific embodiment of the present utility model.
Embodiment 1
With reference to Fig. 1, the resistance light modulator for the test of LED drive power dimming behavior of the present embodiment, including adjustable electric
Hinder device RP, selection switching group, resistance measuring instrument, select switching group include: first input end, the second input terminal, the first output end,
Second output terminal.The both ends of adjustable resistor RP are separately connected the first input end and the second input terminal of selection switching group, selection
First output end of switching group connects resistance measuring instrument, and the second output terminal of switching group is selected to connect LED drive power.Selection is opened
The first output end and second output terminal of pass group select a conducting, when the first output end conducting of selection switching group, then adjustable resistance
Device RP connects resistance measuring instrument, carries out resistance measurement；When the second output terminal conducting of selection switching group, then adjustable resistor
RP connects LED drive power, carries out the test of LED drive power dimming behavior.Preferably, resistance measuring instrument is multimeter, general-purpose
The connection of table and measurement method can refer to the prior art, and details are not described herein.
The resistance light modulator for the test of LED drive power dimming behavior of the present embodiment, selects the second of switching group defeated
Outlet connects LED drive power by light modulation line.Preferably, the second output terminal of switching group is selected removably to connect by conducting wire
Connect light modulation line.
The resistance light modulator for the test of LED drive power dimming behavior of the present embodiment, the input terminal of LED drive power
Communication power supply is connected, the output end of LED drive power connects LED load.
The resistance light modulator for the test of LED drive power dimming behavior of the present embodiment further includes shell, adjustable resistance
Device RP and selection switching group are arranged in shell；Adjustable resistor RP is continuous resistance resistors, the tune of continuous resistance resistors
Knob is saved to be arranged on shell；The switch button of switching group is selected to be arranged on shell.Alternatively, resistance measuring instrument setting exists
On shell.
The present embodiment selects a conducting by the first output end and second output terminal for selecting switching group, realizes that resistance is surveyed
Amount and LED drive power dimming behavior test test, without repeatedly handling light modulator and multimeter and light modulation line between
Connection, reduce test demounting procedure, shorten the testing time, improve testing efficiency.
Embodiment 2
With reference to Fig. 2, the difference of the present embodiment and first embodiment is, the present embodiment selects switching group for two grades two
The first input end and the second input terminal of waved switch SW1, two grades of two waved switch SW1 are correspondingly connected with adjustable resistor RP's
Both ends.The first output end connection resistance measuring instrument of two grades of two waved switch SW1, the second of two grades of two waved switch SW1
Output end connects LED drive power.
Further, the first output end of two grades of two waved switch SW1 includes contact A+and contact A-, contact A+and contact
A- is separately connected resistance measuring instrument；The second output terminal of two grades of two waved switch SW1 includes contact B+ and contact B-, contact B+
LED drive power is separately connected with contact B-.It is appreciated that two grades of two waved switch SW1 are linked switch, i.e., at two grade two
Position waved switch SW1 be allocated to contact A+, while contact A-can be allocated to, and contact B+ and contact B- are disconnected simultaneously.Similarly, two
Two waved switch SW1 of shelves are linked switch, i.e., are allocated to contact B+ in two grades of two waved switch SW1, while can be allocated to contact
B-, and contact A+and contact A-disconnect simultaneously.
When two grades of two waved switch SW1 make contact A+ and contact A-, then adjustable resistor RP connects resistance measuring instrument,
Carry out resistance measurement.
As two grades of two waved switches SW1 make contact B+ and contact B-, then resistor RP is adjusted to connect LED drive power,
Carry out the test of LED drive power dimming behavior.
The present embodiment realizes resistance measurement and LED drive power dimming behavior by two grades of two waved switch SW1
The test of test reduces test demounting procedure without the connection loaded and unloaded between light modulator and multimeter and light modulation line repeatedly,
Shorten the testing time, improves testing efficiency.
Embodiment 3
With reference to Fig. 3, the difference of the present embodiment and first embodiment is, the selection switching group of the present embodiment is opened including first
Close K1, second switch K2, third switch K3, the 4th switch K4, wherein the both ends of adjustable resistor RP pass through first switch respectively
K1 connects resistance measuring instrument with second switch K2；The both ends of adjustable resistor RP pass through third switch K3 and the 4th switch K4 respectively
Connect LED drive power.
It is when first switch K1 is connected with second switch K2, while third switch K3 and the 4th switch K4 is disconnected, then adjustable
Resistor RP connects resistance measuring instrument, carries out resistance measurement.
When third switch K3 and the 4th switch K4 is connected, while first switch K1 and second switch K2 is disconnected, then electricity is adjusted
It hinders device RP and connects LED drive power, carry out the test of LED drive power dimming behavior.
The present embodiment realizes that resistance is surveyed by first switch K1, second switch K2, third switch K3, the 4th switch K4
Amount and LED drive power dimming behavior test test, without repeatedly handling light modulator and multimeter and light modulation line between
Connection, reduce test demounting procedure, shorten the testing time, improve testing efficiency.
Embodiment 4
With reference to Fig. 4, the difference of the present embodiment and first embodiment is, the selection switching group of the present embodiment is opened including the 5th
Close K5 and the 6th switch K6.One end of adjustable resistor RP be separately connected resistance measuring instrument one end and LED drive power one
End, the other end of adjustable resistor RP pass through the other end of the 5th switch K5 connection resistance measuring instrument, and adjustable resistor RP's is another
One end passes through the other end of the 6th switch K6 connection LED drive power.
When the 5th switch K5 is connected, while the 6th switch K6 is disconnected, then resistor RP is adjusted to connect resistance measuring instrument, carried out
Resistance measurement.
When the 6th switch K6 is connected, while the 5th switch K5 is disconnected, then resistor RP is adjusted to connect LED drive power, into
The test of row LED drive power dimming behavior.
The present embodiment realizes resistance measurement and LED drive power light modulation property by the 5th switch K5 and the 6th switch K6
The test that can be tested reduces test disassembly and walks without the connection loaded and unloaded between light modulator and multimeter and light modulation line repeatedly
Suddenly, shorten the testing time, improve testing efficiency.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The utility model realizes that light modulator switches between resistance measuring instrument and light modulation line by selection switching group, it can
It realizes and measures resistance value in light modulation, without the connection loaded and unloaded between light modulator and multimeter and light modulation line repeatedly, reduce and survey
Demounting procedure is tried, the testing time is shortened, improves testing efficiency.
Above embodiments are only to illustrate the technical ideas and features of the present invention, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement accordingly, the protection scope of the utility model can not be limited.It is all with
The equivalent changes and modifications that the utility model claims range is done, should belong to the utility model claims covers model
It encloses.
Claims (10)
1. a kind of resistance light modulator for the test of LED drive power dimming behavior, which is characterized in that including adjustable resistor
RP, selection switching group, resistance measuring instrument, the selection switching group include: first input end, the second input terminal, the first output end,
Second output terminal；
The both ends of the adjustable resistor RP are separately connected the first input end and the second input terminal of the selection switching group, described
The first output end of switching group is selected to connect the resistance measuring instrument, the second output terminal connection LED of the selection switching group drives
Dynamic power supply；
The first output end and second output terminal of the selection switching group select a conducting.
2. the resistance light modulator according to claim 1 for the test of LED drive power dimming behavior, which is characterized in that
It is described to select switching group for two grades of two waved switch SW1, the first input end and second of described two grades of two waved switch SW1
Input terminal is correspondingly connected with the both ends of the adjustable resistor RP；
The first output end of described two grades of two waved switch SW1 connects the resistance measuring instrument, and described two grades two fluctuations are opened
The second output terminal for closing SW1 connects the LED drive power.
3. the resistance light modulator according to claim 2 for the test of LED drive power dimming behavior, which is characterized in that
The first output end of described two grades of two waved switch SW1 includes contact A+and contact A-, the contact A+and contact A-difference
Connect the resistance measuring instrument；
The second output terminal of two grades of two waved switch SW1 includes contact B+ and contact B-, the contact B+ and contact B-
It is separately connected the LED drive power.
4. the resistance light modulator according to claim 1 for the test of LED drive power dimming behavior, which is characterized in that
The selection switching group includes first switch K1, second switch K2, third switch K3, the 4th switch K4；
The both ends of the adjustable resistor RP connect the resistance measurement with second switch K2 by the first switch K1 respectively
Instrument；
The both ends of the adjustable resistor RP drive electricity by the third switch K3 and the 4th switch K4 connection LED respectively
Source.
5. the resistance light modulator according to claim 1 for the test of LED drive power dimming behavior, which is characterized in that
The selection switching group includes the 5th switch K5 and the 6th switch K6；
One end of the adjustable resistor RP be separately connected the resistance measuring instrument one end and the LED drive power one
End, the other end of the adjustable resistor RP connects the other end of the resistance measuring instrument by the 5th switch K5, described
The other end of adjustable resistor RP connects the other end of the LED drive power by the 6th switch K6.
6. the resistance light modulator according to claim 1 for the test of LED drive power dimming behavior, which is characterized in that
The second output terminal of the selection switching group connects the LED drive power by light modulation line.
7. the resistance light modulator according to claim 6 for the test of LED drive power dimming behavior, which is characterized in that
The second output terminal of the selection switching group removably connects the light modulation line by conducting wire.
8. the resistance light modulator according to claim 1 for the test of LED drive power dimming behavior, which is characterized in that
The input terminal of the LED drive power connects communication power supply, and the output end of the LED drive power connects LED load.
9. the resistance light modulator according to claim 1 for the test of LED drive power dimming behavior, which is characterized in that
It further include shell, the adjustable resistor RP and selection switching group are arranged in the shell；
The adjustable resistor RP is continuous resistance resistors, and the adjusting knob of the continuous resistance resistors is arranged in the shell
On body；
The switch button setting of the selection switching group is on the housing.
10. the resistance light modulator according to claim 1 for the test of LED drive power dimming behavior, which is characterized in that
The resistance measuring instrument is multimeter.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821793258.1U CN209296892U (en) | 2018-11-01 | 2018-11-01 | A kind of resistance light modulator for the test of LED drive power dimming behavior |
| PCT/CN2019/080861 WO2020087863A1 (en) | 2018-11-01 | 2019-04-01 | Resistance dimmer for testing dimming performance of led driving power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821793258.1U CN209296892U (en) | 2018-11-01 | 2018-11-01 | A kind of resistance light modulator for the test of LED drive power dimming behavior |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209296892U true CN209296892U (en) | 2019-08-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821793258.1U Active CN209296892U (en) | 2018-11-01 | 2018-11-01 | A kind of resistance light modulator for the test of LED drive power dimming behavior |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN209296892U (en) |
| WO (1) | WO2020087863A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114047456A (en) * | 2021-10-18 | 2022-02-15 | 赖云飞 | LED power supply test control circuit |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4403213A (en) * | 1981-03-11 | 1983-09-06 | Ncr Corporation | Power supply diagnostic system |
| CN100541215C (en) * | 2007-03-21 | 2009-09-16 | 华为技术有限公司 | A kind of state analog device and equipment under test function test system |
| CN102478638A (en) * | 2010-11-27 | 2012-05-30 | 西安博昱新能源有限公司 | Comprehensive LED streetlamp power source testing system |
| CN202135365U (en) * | 2011-06-27 | 2012-02-01 | 英飞特电子（杭州）有限公司 | LED driving apparatus |
| CN202135364U (en) * | 2011-06-27 | 2012-02-01 | 英飞特电子（杭州）有限公司 | LED driving device |
| CN102645628B (en) * | 2012-04-19 | 2014-01-22 | 北京航空航天大学 | Fixed-high and fixed-low fault injecting circuit and method for online test of digital circuit board |
| CN204964721U (en) * | 2015-09-23 | 2016-01-13 | 安徽中电晶超照明有限公司 | LED constant current power supply drives test fixture |
| CN206235720U (en) * | 2016-12-08 | 2017-06-09 | 北京华睿集成科技有限公司 | A kind of LED drives test system |
| CN108254701A (en) * | 2017-12-25 | 2018-07-06 | 南通同洲电子有限责任公司 | One kind can test Switching Power Supply |
-
2018
- 2018-11-01 CN CN201821793258.1U patent/CN209296892U/en active Active
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2019
- 2019-04-01 WO PCT/CN2019/080861 patent/WO2020087863A1/en active Application Filing
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| WO2020087863A1 (en) | 2020-05-07 |
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