CN105467232A - Test circuit for converter - Google Patents
Test circuit for converter Download PDFInfo
- Publication number
- CN105467232A CN105467232A CN201410456489.3A CN201410456489A CN105467232A CN 105467232 A CN105467232 A CN 105467232A CN 201410456489 A CN201410456489 A CN 201410456489A CN 105467232 A CN105467232 A CN 105467232A
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- Prior art keywords
- converter
- test circuit
- branch road
- led
- positive
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- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The invention discloses a test circuit for a converter. The converter comprises a positive voltage output pin and multiple feedback output pins. The test circuit comprises multiple parallel branches. Each branch comprises multiple LEDs which are connected in series. The positive and negative electrodes of the LEDs of each branch are arranged in turn. The positive electrode of the first LED of each branch is connected with the positive voltage output pin. The last LED of each branch is connected with one of the multiple feedback output pins. Jumper wires are connected between the multiple positive and negative electrodes of the LEDs of each branch. As for the converter of different output current, only the number of the short-circuit jumper wires in the test circuit requires to be adjusted without using an LED panel or even replacing the LED panel so that use of the test circuit is time-saving and cost-saving.
Description
[technical field]
The present invention relates to test circuit, particularly relate to a kind of test circuit of converter.
[background technology]
The screen of current electronic product can adopt LEDpanel usually, and LEDpanel can adopt converter to carry out driving as LED, and converter is a kind of constant current output, the adjustable converter of voltage.Whether the output current of current test converter meets the requirement of corresponding LEDpanel, and corresponding LEDpanel usually can be utilized to survey.
But because the screen specification of electronic product is various, the converter of its correspondence is different, need to test the converter of different size.Although the voltage of converter is adjustable, the voltage of LEDpanel is again fixing nonadjustable.For the converter of different size, wish that carrying out test by the LEDpanel of same specification cannot reach, therefore can change and use different LEDpanel to test, the commonality of test mode is poor, need to purchase many different LEDpanel, Expenses Cost and test duration.
In view of this, the test circuit that a kind of converter is provided is necessary, to solve the problem in fact.
[summary of the invention]
Therefore, the object of this invention is to provide a kind of test circuit of converter, during to solve prior art corresponding different converter (converter), need to change different LEDpanel, the problem of Expenses Cost and test duration.
In order to achieve the above object, the test circuit of converter provided by the invention, this converter comprises a cathode voltage output pin and several feedback output pins, this test circuit comprises some parallel branches, each described branch road comprises the LED of several series connection, the both positive and negative polarity sequential of the described LED in each described branch road, the positive pole of the first LED of each described branch road connects described cathode voltage output pin, the end of an each described branch road LED connect several feedback output pins described one of them, wire jumper is connected with between the several both positive and negative polarity in the described LED on each described branch road.
Alternatively, described converter is constant current output, the adjustable converter of voltage.
Alternatively, the pressure drop of each described LED is 3 ~ 3.3V.
Alternatively, described branch road is 4 ~ 8.
Alternatively, 8 ~ 30 LED are comprised in described branch road respectively.
Alternatively, 15 LED are comprised in described branch road respectively.
Alternatively, the LED being provided with wire jumper in described branch road between both positive and negative polarity is 4.
Compared to prior art, utilize the test circuit of converter of the present invention, when testing different converters, only need correspondingly optionally wire jumper described in short circuit in each branch road, and then reach the output current demand that electric current in each branch road meets converter, the voltage then corresponding virtual voltage be adjusted in each branch road of converter.Visible, the converter of corresponding different output current, only need by the wire jumper short circuit number in adjustment test circuit, and need not use LEDpanel and more can not relate to and change LEDpanel, uses this test circuit to save time cost-saving.
[accompanying drawing explanation]
Fig. 1 illustrates the circuit diagram of test circuit one preferred embodiment into converter of the present invention.
[embodiment]
Incorporated by reference to consulting Fig. 1, Fig. 1 illustrates the circuit diagram of test circuit one preferred embodiment into converter of the present invention.
In order to achieve the above object, the test circuit of converter provided by the invention, this converter 100 comprises a cathode voltage output pin 101 and several feedback output pins 102, this test circuit 200 comprises some parallel branches, each described branch road comprises the LED201 of several series connection, the both positive and negative polarity sequential of the described LED201 in each described branch road, the positive pole of the first LED201 of each described branch road connects described cathode voltage output pin 101, (the feedback output pin 102 in figure is for four for an end LED101 connection several feedback output pins 102 described of each described branch road, isens1 ~ 4) one of them, wire jumper (jumper) 202 is connected with between the several both positive and negative polarity in the described LED201 on each described branch road.
Wherein, described converter 100 is constant current output, the adjustable converter of voltage.Wherein, the pressure drop of each described LED201 can be 3 ~ 3.3V.Described branch road can be 4 ~ 8, can comprise 8 ~ 30 LED201 respectively in described branch road.Certainly, the number of branch road and the number of each branch road LED201 are the demands of the converter in order to meet corresponding test.
Be depicted as example with circuit diagram in embodiment, comprise 15 LED201 in described branch road respectively, and the LED201 being provided with wire jumper 202 in described branch road between both positive and negative polarity be 4.In order to meet the demand of this converter 100 output current, three LED201 both positive and negative polarities in each branch road of short circuit can be needed.For the pressure drop of described LED201 for 3 ~ 3.3V, then the stagnation pressure of remaining 11 LED201 reduces to 36 ~ 39.6V, and the output voltage of converter 100 then can be adjusted to 36 ~ 39.6V (forming loop respectively between the cathode voltage output pin 101 of converter 100 and several feedback output pins 102).
Test for converter 100 output current then adopts galvanometer (such as adopting multimeter), and between cathode voltage output pin 101 and each branch road, draw two test points 203 can test.
Utilize the test circuit of converter of the present invention, when testing different converters 100, only need correspondingly optionally wire jumper 202 described in short circuit in each branch road, and then reach the output current demand that electric current in each branch road meets converter 100, the voltage then corresponding virtual voltage be adjusted in each branch road of converter 100.Visible, the converter 100 of corresponding different output current, only need by the wire jumper 202 short circuit number in adjustment test circuit 200, and need not use LEDpanel and more can not relate to and change LEDpanel, uses this test circuit 200 to save time cost-saving.
It is noted that the invention is not restricted to above-mentioned embodiment, any simple modification that any those skilled in the art do above-described embodiment based on technical solution of the present invention, equivalent variations and modification, all fall within the scope of protection of the present invention.
Claims (7)
1. the test circuit of a converter, this converter comprises a cathode voltage output pin and several feedback output pins, it is characterized in that, this test circuit comprises some parallel branches, each described branch road comprises the LED of several series connection, the both positive and negative polarity sequential of the described LED in each described branch road, the positive pole of the first LED of each described branch road connects described cathode voltage output pin, the end of an each described branch road LED connect several feedback output pins described one of them, be connected with wire jumper between the several both positive and negative polarity in the described LED on each described branch road.
2. the test circuit of converter as claimed in claim 1, it is characterized in that, described converter is constant current output, the adjustable converter of voltage.
3. the test circuit of converter as claimed in claim 1 or 2, it is characterized in that, the pressure drop of each described LED is 3 ~ 3.3V.
4. the test circuit of converter as claimed in claim 1 or 2, it is characterized in that, described branch road is 4 ~ 8.
5. the test circuit of converter as claimed in claim 1 or 2, is characterized in that, comprise 8 ~ 30 LED in described branch road respectively.
6. the test circuit of converter as claimed in claim 5, is characterized in that, comprise 15 LED in described branch road respectively.
7. the test circuit of converter as claimed in claim 6, it is characterized in that, the LED being provided with wire jumper in described branch road between both positive and negative polarity is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410456489.3A CN105467232B (en) | 2014-09-10 | 2014-09-10 | The test circuit of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410456489.3A CN105467232B (en) | 2014-09-10 | 2014-09-10 | The test circuit of converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105467232A true CN105467232A (en) | 2016-04-06 |
| CN105467232B CN105467232B (en) | 2018-04-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410456489.3A Expired - Fee Related CN105467232B (en) | 2014-09-10 | 2014-09-10 | The test circuit of converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105467232B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI718724B (en) * | 2019-10-25 | 2021-02-11 | 台灣愛司帝科技股份有限公司 | Led wafer, and led wafer detection device and method |
| CN113589214A (en) * | 2021-08-05 | 2021-11-02 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | CT secondary through-flow method for power plant |
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| CN103150983A (en) * | 2011-12-07 | 2013-06-12 | 美格纳半导体有限公司 | Detecting circuit for short of LED array and LED driving apparatus |
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| CN204154823U (en) * | 2014-09-10 | 2015-02-11 | 神讯电脑(昆山)有限公司 | The test circuit of converter |
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2014
- 2014-09-10 CN CN201410456489.3A patent/CN105467232B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| US20050242822A1 (en) * | 2004-04-30 | 2005-11-03 | Siemens Aktiengesellschaft | Method and device for testing at least one LED strip |
| CN101153888A (en) * | 2006-09-29 | 2008-04-02 | 比亚迪股份有限公司 | Testing method for luminous parallel path of flexible printing circuit board |
| CN102298909A (en) * | 2010-06-22 | 2011-12-28 | 神讯电脑(昆山)有限公司 | Brilliance calibration system of liquid crystal display device |
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| CN102692594A (en) * | 2011-03-21 | 2012-09-26 | 海洋王照明科技股份有限公司 | Tool and method for testing constant current of LED drive board |
| CN103150983A (en) * | 2011-12-07 | 2013-06-12 | 美格纳半导体有限公司 | Detecting circuit for short of LED array and LED driving apparatus |
| CN102866346A (en) * | 2012-09-14 | 2013-01-09 | 京东方科技集团股份有限公司 | Platform and method for testing light-emitting diode (LED) array drive efficiency |
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| CN203775459U (en) * | 2013-12-25 | 2014-08-13 | 浙江光汇照明电子有限公司 | LED driver convenient to adjust output current |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI718724B (en) * | 2019-10-25 | 2021-02-11 | 台灣愛司帝科技股份有限公司 | Led wafer, and led wafer detection device and method |
| CN113589214A (en) * | 2021-08-05 | 2021-11-02 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | CT secondary through-flow method for power plant |
| CN113589214B (en) * | 2021-08-05 | 2024-02-20 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | CT (computed tomography) secondary through-flow method for power plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105467232B (en) | 2018-04-20 |
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Granted publication date: 20180420 |