CN209784509U - Low-cost wide voltage LED lamp plate tester - Google Patents
Low-cost wide voltage LED lamp plate tester Download PDFInfo
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- CN209784509U CN209784509U CN201920466020.6U CN201920466020U CN209784509U CN 209784509 U CN209784509 U CN 209784509U CN 201920466020 U CN201920466020 U CN 201920466020U CN 209784509 U CN209784509 U CN 209784509U
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Abstract
The utility model discloses a low-cost wide voltage LED lamp plate tester, by alternating current power plug, plug first connecting wire, plug second connecting wire, first current-limiting resistance, second current-limiting resistance, rectifier bridge, LED pilot lamp, negative pole pen-shape metre, anodal pen-shape metre, circuit board, shell are constituteed, first current-limiting resistance, second current-limiting resistance connect respectively at rectifier bridge's input or output; adopted the utility model discloses a scheme has overcome the higher shortcoming of instrument cost that small enterprise purchased special test lamp plate, is particularly suitable for middle and small enterprise and lamps and lanterns repairment and is used for the test of LED lamp plate.
Description
Technical Field
The utility model relates to a LED lamp plate tester, especially a very wide LED lamp plate tester of low cost, test voltage.
Background
At present, LED lamps are popularized, and manufacturers often test the quality of the welded LED lamp panels to determine whether certain lamp beads on the lamp panels are welded well and whether the polarity is reversed; the enterprise of maintenance LED lamp, often all will detect the damaged condition of lamp pearl on the lamp plate, so that change the lamp pearl, to big-and-middle-sized enterprise, generally all there is special instrument to detect, but to small-size enterprise, the fund is general nervous, generally no professional equipment is purchased, just at ordinary times, the diode that uses the universal meter measures the shelves and is used for testing the quality of single LED lamp pearl, but can not directly test whole lamp plate, perhaps keep apart the direct LED lamp plate of LED drive power supply with the constant current and test the quality, but connect the polarity easily, the low-power lamp plate is received again sometimes to big wattage drive power supply, test electrode position connects wrong etc. and all causes the lamp pearl to damage easily, it is extremely inconvenient to use, there is the instrument of special test lamp plate, and is high.
SUMMERY OF THE UTILITY MODEL
In order to overcome the higher shortcoming of instrument cost of small-size enterprise purchase special test lamp plate, the utility model provides a low-cost wide voltage LED lamp plate tester is in order to solve this problem, and its positive effect is: the low-cost wide-voltage LED lamp panel tester is used for testing the lamp panel or the lamp bead, the cost is only about 4 yuan, the output voltage range is wide, and the tester can adapt to various lamp panels.
The utility model provides a technical scheme that its technical problem adopted is: the utility model discloses a low-cost wide voltage LED lamp plate tester, by alternating current power plug, plug first connecting wire, plug second connecting wire, first current-limiting resistance, second current-limiting resistance, rectifier bridge, LED pilot lamp, negative pole pen-shape metre, anodal pen-shape metre, circuit board, shell are constituteed, first current-limiting resistance, second current-limiting resistance connect respectively at rectifier bridge's input or output; the first scheme is that a negative electrode meter pen is connected with a negative electrode output end of a rectifier bridge, and an LED indicator lamp is connected between a positive electrode output end of the rectifier bridge and the positive electrode meter pen; the second scheme is that the LED indicator lamp is connected between the second current-limiting resistor and the positive meter pen.
The technical scheme adopted by the utility model will be described in detail in the concrete embodiment with the accompanying drawings.
Drawings
The following is a brief description of the drawings.
Fig. 1 is the utility model discloses a low-cost wide voltage LED lamp plate tester circuit schematic diagram.
In the figure, 1 is an alternating current power supply plug, 2 is a first plug connecting line, 3 is a second plug connecting line, 4 is a first current-limiting resistor, 5 is a second current-limiting resistor, 6 is a rectifier bridge, 7 is an LED indicating lamp, 8 is a negative electrode meter pen, and 9 is a positive electrode meter pen.
Fig. 2 is the circuit schematic diagram of another embodiment of the low-cost wide-voltage LED lamp panel tester of the utility model.
In the figure, 1 is an alternating current power supply plug, 2 is a first plug connecting line, 3 is a second plug connecting line, 4 is a first current-limiting resistor, 5 is a second current-limiting resistor, 6 is a rectifier bridge, 7 is an LED indicating lamp, 8 is a negative electrode meter pen, and 9 is a positive electrode meter pen.
Fig. 3 is the utility model discloses a low-cost wide voltage LED lamp plate tester schematic structure.
In the figure, 1, an alternating current power supply plug, 2, a first plug connecting wire, 3, a second plug connecting wire, 4, a first current-limiting resistor, 5, a second current-limiting resistor, 6, a rectifier bridge, 7, an LED indicator light, 8, a negative electrode meter pen, 9, a positive electrode meter pen, 10, a circuit board and 11, and a shell.
Detailed Description
In the embodiment of fig. 1, we take an example of implementing a low-cost wide-voltage LED lamp panel tester to further explain the present invention:
fig. 1 is the utility model discloses a wide voltage LED lamp plate tester schematic diagram of low cost, in the picture alternating current power plug 1 is connected with the first connecting wire 2 of plug and plug second connecting wire 3, is connected with current-limiting resistor 4, current-limiting resistor 5 between the first connecting wire 2 of plug, plug second connecting wire 3 and rectifier bridge 6's the input, and LED pilot lamp 7 is connected between rectifier bridge 6 and anodal pen-shape metre 9, and 8 lug connection of negative pole pen-shape metre are at rectifier bridge 6's negative pole output.
Fig. 2 is the circuit schematic diagram of another embodiment of the low-cost wide-voltage LED lamp panel tester of the utility model.
The first plug connecting wire 2 and the second plug connecting wire 3 are respectively connected to two input ends of a rectifier bridge 6, the current limiting resistor 4 and the current limiting resistor 5 are respectively connected to an output end of the rectifier bridge 6, and different from the figure 1, the positions of the current limiting resistor 4 and the current limiting resistor 5 are different, but the effect is the same.
Fig. 3 is the utility model discloses a low-cost wide voltage LED lamp plate tester schematic structure.
In the figure, an alternating current power supply plug 1 is connected with a first plug connecting wire 2 and a second plug connecting wire 3, the alternating current power supply plug 1 is a plug with a wire, a rectifier bridge 6 is 600V, a 0.5A full-bridge patch, a current limiting resistor 4 and a current limiting resistor 5 are patch resistors of 1206, the resistance is larger than or equal to 510K, an LED indicating lamp 7 is 3V, a 0.5W patch 5630 lamp bead, an anode meter pen 9 and a cathode meter pen 8 are universal meter pens directly selected, all patch elements and connecting wires are welded on a circuit board 10 together, the shell 11 can find a plastic shell slightly larger than the circuit board 10, the circuit board is fixed on the shell 11, and particularly, a small window needs to be opened on the shell 10 at the position of the LED indicating lamp 7 of the circuit board 10 so as to see the LED indicating lamp 7, and the LED indicating lamp 7 can be used for testing the on-off of the circuit.
According to the specific implementation mode, the low-cost wide-voltage LED lamp panel tester is manufactured, and the working principle is as follows: the alternating current becomes the pulsation direct current through current-limiting, rectification, through the LED lamp pearl of positive negative meter pen contact LED lamp plate, forms the route, if the LED lamp plate is good, LED lamp pearl is bright totally, if there is the lamp pearl to damage, the lamp pearl that damages just can not give out light. The tester adopts the current-limiting resistor at the input end or the output end of the rectifier bridge 6, and aims to avoid electric shock caused by human body contacting with the live wire, because the current-limiting resistor more than or equal to 510K is adopted, the human body contacts with the meter pen, the current flowing through the human body is very small, and the electric shock cannot occur, meanwhile, the tester has wide test voltage, the lamp panel with the working voltage of 2.5V to about 200V can be tested, the cost is low, the cost of the whole tester is about 4 yuan, and the work is very reliable because of few elements.
Claims (3)
1. The utility model provides a low-cost wide voltage LED lamp plate tester, by alternating current power plug (1), the first line of plug (2), plug second line (3), first current-limiting resistor (4), second current-limiting resistor (5), rectifier bridge (6), LED pilot lamp (7), negative pole pen-shape metre (8), anodal pen-shape metre (9), circuit board (10), shell (11) are constituteed, characterized by: the first current limiting resistor (4) and the second current limiting resistor (5) are respectively connected with the input end or the output end of the rectifier bridge (6).
2. The low-cost wide-voltage LED lamp panel tester of claim 1, which is characterized in that: the negative electrode meter pen (8) is connected with the negative electrode output end of the rectifier bridge (6), and the LED indicator lamp (7) is connected between the positive electrode output end of the rectifier bridge (6) and the positive electrode meter pen (9).
3. The low-cost wide-voltage LED lamp panel tester of claim 1, which is characterized in that: the LED indicator light (7) is connected between the second current-limiting resistor (5) and the positive meter pen (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920466020.6U CN209784509U (en) | 2019-04-09 | 2019-04-09 | Low-cost wide voltage LED lamp plate tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920466020.6U CN209784509U (en) | 2019-04-09 | 2019-04-09 | Low-cost wide voltage LED lamp plate tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209784509U true CN209784509U (en) | 2019-12-13 |
Family
ID=68801654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920466020.6U Expired - Fee Related CN209784509U (en) | 2019-04-09 | 2019-04-09 | Low-cost wide voltage LED lamp plate tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209784509U (en) |
-
2019
- 2019-04-09 CN CN201920466020.6U patent/CN209784509U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 |