CN102565661A - All-purpose detector for performance of light-emitting diode (LED) - Google Patents
All-purpose detector for performance of light-emitting diode (LED) Download PDFInfo
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- CN102565661A CN102565661A CN2012100659151A CN201210065915A CN102565661A CN 102565661 A CN102565661 A CN 102565661A CN 2012100659151 A CN2012100659151 A CN 2012100659151A CN 201210065915 A CN201210065915 A CN 201210065915A CN 102565661 A CN102565661 A CN 102565661A
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Abstract
The invention relates to an all-purpose detector for performance of a light-emitting diode (LED). The detector consists of a 6V direct-current power supply, a low-frequency self-excited oscillator circuit, an inverter circuit, an LED detection terminal and a direct-current power supply indicating circuit, wherein integrated circuit (IC) types of operational amplifier IC1s respectively arranged in the low-frequency self-excited oscillator circuit and the inverter circuit are LM324. Measurement needs to be performed for two times by adopting common detection devices, and two measurement processes are not complicated, but the time is extremely wasted by mass detection for projects with higher usage amount of the LED, for example, LED advertisements or traffic indicator lights and the like are manufactured. The all-purpose detector for performance of the LED is a special testing circuit. The detector can be used for performing detection without distinguishing the polarities of the LED to rapidly judge the performance and the luminance condition of the LED. Two test results can be obtained by measuring the LED for one time. Compared with testing measures, such as common universal meters, the all-purpose detector for performance of the LED is simple, visual and time-saving.
Description
Technical field
The invention belongs to the led technology field, is about a kind of light emitting diode performance all-purpose detector.
Background technology
The method that detects the light emitting diode performance is a lot; But fast detecting and have the method for performance comparison rare is special in the big field of light emitting diode use amount, if light emitting diode is without detecting in earnest and screening; After in case the problematic light emitting diode of performance is welded on the circuit board; Again change very inconvenience, and be easy to damage the pad of circuit board, also influence very much production efficiency.General pick-up unit need measure twice sometimes, though twice measuring process is not very complicated, and for the bigger engineering of light emitting diode use amount, as, just lose time very much in batch detection such as making LED advertisement or stop-lights.Light emitting diode performance all-purpose detector of the present invention is a special measurement circuit, and the polarity that this tester need not be distinguished light emitting diode can detect, and judges its performance and luminosity situation fast.Light emitting diode be as long as just can obtain two test results through one-shot measurement, than have simply with means of testing such as common multimeters, intuitively, save time.
Below specify light emitting diode performance all-purpose detector of the present invention related relevant technologies content in manufacturing process.
Summary of the invention
Goal of the invention and beneficial effect: general pick-up unit need be measured twice sometimes; Though twice measuring process is not very complicated; But for the bigger engineering of light emitting diode use amount, as, just lose time very much in batch detection such as making LED advertisement or stop-lights.Light emitting diode performance all-purpose detector of the present invention is a special measurement circuit, and the polarity that this tester need not be distinguished light emitting diode can detect, and judges its performance and luminosity situation fast.Light emitting diode be as long as just can obtain two test results through one-shot measurement, than have simply with means of testing such as common multimeters, intuitively, save time.
The circuit working principle: light emitting diode performance all-purpose detector, it is connected into the LF self-oscillation device by one road operational amplifier, exports high level or low level off and at output terminal; Another road operational amplifier is connected into the phase inverter form.When pierce circuit output high level, phase inverter is output low level then; During LF self-oscillation device circuit output low level, phase inverter output high level.If refute at two output terminals and to connect a light emitting diode, no matter the polarity of refuting the sending and receiving optical diode how, conducting is luminous off and on always light emitting diode, makes light emitting diode along with the oscillation frequency of pierce circuit.LED in the power circuit is the direct supply indication, and double as is the comparison and contrast of lumination of light emitting diode intensity to be detected.The model that operational amplifier IC1 selects for use is LM324 or LM358.
Technical scheme: light emitting diode performance all-purpose detector, it is made up of 6V direct supply, LF self-oscillation device circuit, inverter circuit, light emitting diode detection terminal and direct supply indicating circuit, and its characteristic comprises:
LF self-oscillation device circuit: form by operational amplifier IC1, resistance R 1, resistance R 2, resistance R 3 and resistance R 4; The integrated circuit model that operational amplifier IC1 uses is LM324; The 1st pin sending and receiving optical diode detection terminal a of operational amplifier IC1 and an end of resistance R 3; The other end of the 2nd pin connecting resistance R3 of operational amplifier IC1 and an end of resistance R 4; The other end of the 7th pin connecting resistance R4 of operational amplifier IC1; The end of the 3rd pin connecting resistance R1 of operational amplifier IC1 and an end of resistance R 2, another termination 6V dc power anode VCC of the 4th pin of operational amplifier IC1 and resistance R 1, the other end connection circuit ground GND of the 11st pin of operational amplifier IC1 and resistance R 2;
Inverter circuit: form by operational amplifier IC1, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10 and electrochemical capacitor C1; The end of the 6th pin connecting resistance R9 of operational amplifier IC1, an end of resistance R 7 and an end of resistance R 10; The other end of the 7th pin connecting resistance R7 of operational amplifier IC1 and an end of resistance R 6; The other end sending and receiving optical diode detection terminal b of resistance R 6; Another termination 6V dc power anode VCC of resistance R 9, the other end connection circuit ground GND of resistance R 10, the 5th pin of operational amplifier IC1 connect the positive pole of electrochemical capacitor C1 and an end of resistance R 8; The other end of the 7th pin connecting resistance R8 of operational amplifier IC1, the negative pole connection circuit ground GND of electrochemical capacitor C1.
Direct supply indicating circuit: a termination 6V dc power anode VCC of resistance R 5, the positive pole of the other end sending and receiving optical diode LED of resistance R 5, the negative pole connection circuit ground GND of LED.
Description of drawings
Accompanying drawing 1 is the embodiment circuit working schematic diagram that the present invention provides a light emitting diode performance all-purpose detector.
Embodiment
Implement according to the circuit working schematic diagram of the all-purpose detector of light emitting diode performance shown in the accompanying drawing 1 and the components and parts technical requirement of description of drawings and the following stated, can realize the present invention.
The selection of components and parts and technical parameter thereof
IC1 is an operational amplifier; The integrated circuit model of recommending to use is LM324; The circuit that it is made up of four groups of separate operational amplifiers, it can be worked in the single-power voltage scope of broad, also can under the dual power supply condition, work; The supply voltage working range: single supply 3V～30V, dual power supply ± 1.5V～± 15V; Present embodiment has only been used two of IC1-A, IC1-D among four groups of operational amplifier LM324;
LM324 type integrated circuit be encapsulated as dual inline type, its 14 pins and function are respectively:
1 pin OUTPUT, 1,2 pin INPUT 1-, 3 pin INPUT 1+; 4 pin meet the anodal VCC of power supply; 5 pin INPUT 2+, 6 pin INPUT 2-, 7 pin OUTPUT 2; 8 pin OUTPUT, 3,9 pin INPUT 3-, 10 pin INPUT 3+; 11 pin connection circuit ground GND, that is: the negative poles of direct supply; 12 pin INPUT 4+, 13 pin INPUT 4-, 14 pin OUTPUT 4.
OUTPUT is the output terminal of operational amplifier; INPUT+ is the positive input of operational amplifier; INPUT-is the reverse input end of operational amplifier.
Circuit all uses 1/8 metalfilmresistor, and the resistance of resistance R 1, resistance R 2, resistance R 3, resistance R 7, resistance R 9 and resistance R 10 is 50K Ω; The resistance of resistance R 4 is 10K Ω; The resistance of resistance R 5 is 1K Ω; The resistance of resistance R 6 is 910 Ω; The resistance of resistance R 8 is 100K Ω;
C1 is an electrochemical capacitor, and its capacity is 1 μ F, 16V;
AN is a keyswitch open in usual;
The 6V direct supply can use 4 joint 5# alkaline batteries to form.
Circuit production main points and circuit debugging
The circuit of light emitting diode performance all-purpose detector is so long as the electronic devices and components performance of using is intact; Annexation according to components and parts shown in the accompanying drawing 1 is welded; And to physics wiring is conscientiously checked and is checked, and install, welding errorless after, circuit generally need not debugged can operate as normal;
Electrochemical capacitor C1 is used to adjust the glittering frequency of tested light emitting diode, and the glittering frequency of the big more tested light emitting diode of the capacity of electrochemical capacitor C1 is low more, and the capacity recommendation of electrochemical capacitor C1 is 1 μ F;
Resistance R 6 is used to adjust the glittering brightness of tested light emitting diode, as if the glittering luminance shortage of tested light emitting diode, can suitably reduce the resistance of resistance R 6;
Detection terminal a and detection terminal b are that tested light emitting diode is refuted connecting terminal, and tested light emitting diode can be distinguished both positive and negative polarity during use.
Claims (2)
1. light emitting diode performance all-purpose detector, it is made up of 6V direct supply, LF self-oscillation device circuit, inverter circuit, light emitting diode detection terminal and direct supply indicating circuit, and its characteristic comprises:
LF self-oscillation device circuit is made up of operational amplifier IC1, resistance R 1, resistance R 2, resistance R 3 and resistance R 4; The integrated circuit model that operational amplifier IC1 uses is LM324; The 1st pin sending and receiving optical diode detection terminal a of operational amplifier IC1 and an end of resistance R 3; The other end of the 2nd pin connecting resistance R3 of operational amplifier IC1 and an end of resistance R 4; The other end of the 7th pin connecting resistance R4 of operational amplifier IC1; The end of the 3rd pin connecting resistance R1 of operational amplifier IC1 and an end of resistance R 2, another termination 6V dc power anode VCC of the 4th pin of operational amplifier IC1 and resistance R 1, the other end connection circuit ground GND of the 11st pin of operational amplifier IC1 and resistance R 2;
Inverter circuit is made up of operational amplifier IC1, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10 and electrochemical capacitor C1; The end of the 6th pin connecting resistance R9 of operational amplifier IC1, an end of resistance R 7 and an end of resistance R 10; The other end of the 7th pin connecting resistance R7 of operational amplifier IC1 and an end of resistance R 6; The other end sending and receiving optical diode detection terminal b of resistance R 6; Another termination 6V dc power anode VCC of resistance R 9, the other end connection circuit ground GND of resistance R 10, the 5th pin of operational amplifier IC1 connect the positive pole of electrochemical capacitor C1 and an end of resistance R 8; The other end of the 7th pin connecting resistance R8 of operational amplifier IC1, the negative pole connection circuit ground GND of electrochemical capacitor C1.
2. light emitting diode performance all-purpose detector according to claim 1; It is characterized in that: a termination 6V dc power anode VCC of resistance R 5 in the direct supply indicating circuit; The positive pole of the other end sending and receiving optical diode LED of resistance R 5, the negative pole connection circuit ground GND of LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100659151A CN102565661A (en) | 2012-03-13 | 2012-03-13 | All-purpose detector for performance of light-emitting diode (LED) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100659151A CN102565661A (en) | 2012-03-13 | 2012-03-13 | All-purpose detector for performance of light-emitting diode (LED) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102565661A true CN102565661A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100659151A Pending CN102565661A (en) | 2012-03-13 | 2012-03-13 | All-purpose detector for performance of light-emitting diode (LED) |
Country Status (1)
| Country | Link |
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| CN (1) | CN102565661A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101109783A (en) * | 2006-07-18 | 2008-01-23 | 杨少辰 | Electrical parameter testing circuit for light emitting diode |
| CN202453465U (en) * | 2012-03-13 | 2012-09-26 | 刘喆 | Common performance detector for light emitting diodes (LED) |
-
2012
- 2012-03-13 CN CN2012100659151A patent/CN102565661A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101109783A (en) * | 2006-07-18 | 2008-01-23 | 杨少辰 | Electrical parameter testing circuit for light emitting diode |
| CN202453465U (en) * | 2012-03-13 | 2012-09-26 | 刘喆 | Common performance detector for light emitting diodes (LED) |
Non-Patent Citations (1)
| Title |
|---|
| 佚名: "发光二极管检测器电路图 http://www.elecfans.com/article/89/169/2009/2009073081923.html", 《电子发烧友网站》, 30 July 2009 (2009-07-30) * |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120711 |