CN214278348U - LED lamp bead testing device - Google Patents
LED lamp bead testing device Download PDFInfo
- Publication number
- CN214278348U CN214278348U CN202023205889.7U CN202023205889U CN214278348U CN 214278348 U CN214278348 U CN 214278348U CN 202023205889 U CN202023205889 U CN 202023205889U CN 214278348 U CN214278348 U CN 214278348U
- Authority
- CN
- China
- Prior art keywords
- pin
- capacitor
- resistor
- voltage
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to the technical field of LED lamp bead detection, and discloses a LED lamp bead testing device, which comprises a box body and a testing circuit arranged in the box body; the test circuit comprises a switch module, a fuse module, a first switch power supply, a second switch power supply, a voltage reduction module, an automatic detection load module and a voltage/ampere meter; the switch module is connected with the fuse module, and the fuse module is connected with the first switching power supply and the second switching power supply; the first switching power supply is connected with the voltage reduction module, and the voltage reduction module comprises a voltage stabilizing circuit converting 48V into 5V and a voltage stabilizing circuit converting 5V into 3.3V; the second switching power supply is connected with the automatic detection load module; the voltage/ampere meter is connected with the automatic detection load module and the second power supply to form a positive output end and a negative output end. The utility model discloses simple structure is portable, can directly test single or many LED lamp pearls, has advantages such as degree of automation height, easy operation, friendly, the stable performance of interface, test accuracy, test speed are fast.
Description
Technical Field
The utility model relates to a LED lamp pearl detects technical field, especially relates to a LED lamp pearl testing arrangement.
Background
In the prior art, the detection of the LED lamp beads generally adopts an adjustable direct-current power supply test, and an operator adjusts a power supply voltage value and a limiting current value according to the number of the lamp beads to be detected before the test, so that the operation is troublesome, and the detection efficiency is low. Moreover, due to frequent adjustment, the LED lamp beads are easy to burn out or the LED lamp beads are not lighted for operators who do not know the electrical property of the LED lamp beads, and the test work is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the utility model provides a LED lamp pearl testing arrangement to solve prior art and generally adopt adjustable DC power supply test, all need adjust supply voltage value and restriction current value according to the quantity of lamp pearl before the test at every turn, troublesome poeration, detection efficiency is low, the technical problem that operating personnel made mistakes easily.
In order to achieve the purpose, the utility model provides a LED lamp bead testing device, which comprises a box body and a testing circuit arranged in the box body;
the test circuit comprises a switch module, a fuse module, a first power supply, a second power supply, a voltage reduction module, an automatic detection load module and a voltage/ampere meter;
the switch module is connected with the fuse module, and the fuse module is connected with the first power supply and the second power supply;
the first power supply is connected with the voltage reduction module, and the voltage reduction module comprises a voltage stabilizing circuit converting 48V to 5V and a voltage stabilizing circuit converting 5V to 3.3V;
the voltage stabilizing circuit for converting 48V to 5V comprises a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first voltage stabilizing chip, a Schottky diode and a winding inductor; a pin 1 of the first power supply is connected with a GND (ground), a pin 2 of the first power supply is connected with a pin 1 of the first voltage stabilizing chip, and the pin 1 of the first voltage stabilizing chip is a 48V end; pins 3 and 5 of the first voltage stabilizing chip are connected with GND, pins 2 are connected with the cathode of the Schottky diode and the winding inductor, and the anode of the Schottky diode is connected with GND; the first capacitor and the second capacitor are respectively connected in parallel between a pin 2 of the first power supply, a pin 1 of the first voltage stabilizing chip and GND; the third capacitor and the fourth capacitor are respectively connected in parallel among the winding inductor, a pin 4 of the first voltage stabilizing chip and GND, and the pin 4 of the first voltage stabilizing chip is a 5V end;
the voltage stabilizing circuit for converting 5V to 3.3V comprises a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor and a second voltage stabilizing chip; a pin 1 of the second voltage stabilizing chip is connected with a GND, the sixth capacitor and the fifth capacitor are respectively connected between a pin 3 of the second voltage stabilizing chip and the GND in parallel, and the pin 3 of the second voltage stabilizing chip is a 5V end; the seventh capacitor and the eighth capacitor are respectively connected in parallel between the pin 2 and the pin 4 of the second voltage stabilizing chip and GND, and the pin 2 of the second voltage stabilizing chip is a 3.3V end;
the second power supply is connected with the automatic detection load module, and the automatic detection load module comprises a second resistor, a third resistor, a fourth resistor, a fifth resistor and a first light-emitting diode; the pin 2 of the second power supply is connected with the second resistor, the third resistor and the fourth resistor in series and then connected with the pin 3 of the voltage/current meter; one pin of the fifth resistor is connected between the second resistor and the third resistor which are connected in series, the other pin of the fifth resistor is connected with the anode of the first light-emitting diode, and the cathode of the first light-emitting diode is connected between the third resistor and the fourth resistor which are connected in series;
a pin 1 of the voltage/current meter is connected with a 5V end, a pin 2 is connected with GND, a pin 3 is connected with the fourth resistor and forms an anode output end, a pin 4 forms a cathode output end, and a pin 5 is connected with a pin 1 of the second power supply;
the surface of the box body is provided with an alternating current power supply interface, a switch button, a display screen, a positive electrode interface and a negative electrode interface; the alternating current power supply interface and the switch button are connected with the switch module, the display screen is connected with the voltage/ampere meter, the positive electrode interface is connected with the positive electrode output end, and the negative electrode interface is connected with the negative electrode output end.
In some embodiments of the present application, the power supply further comprises a power indicator module;
the power indicator lamp module comprises a second light emitting diode and a first resistor; the anode of the second light emitting diode is connected with a 3.3V end, the cathode of the second light emitting diode is connected with one pin of the first resistor, and the other pin of the first resistor is connected with GND.
In some embodiments of the present application, the first capacitor, the third capacitor, the fifth capacitor and the eighth capacitor are all ceramic capacitors, and the second capacitor, the fourth capacitor, the sixth capacitor and the seventh capacitor are all electrolytic capacitors.
In some embodiments of the present application, the first resistor, the second resistor, the third resistor, the fourth resistor, and the fifth resistor are all cement resistors.
In some embodiments of the present application, the first voltage regulation chip is an LM2576 HV-5V voltage regulation integrated circuit chip, and the second voltage regulation chip is an LD 1117-3.3V voltage regulation integrated circuit chip.
The embodiment of the utility model provides a LED lamp pearl testing arrangement compares with prior art, and its beneficial effect lies in:
the utility model provides a pair of LED lamp pearl testing arrangement arranges test circuit in the box, makes whole device simple structure portable. The test circuit comprises circuits such as a switching power supply, a current-limiting voltage reduction circuit, a short-circuit protection circuit and an automatic detection OUT circuit, the no-load voltage of the test circuit is DC46V, the test circuit can directly test single or multiple LED lamp beads, the voltage value on the voltage/current meter can automatically change, the structure of adjusting the power supply voltage value and the current limiting value according to the number of the lamp beads before each test is not needed, and the test circuit has the advantages of high automation degree, simplicity in operation, friendly interface, stable performance, accuracy in test, high test speed and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a front view axial schematic diagram of a LED lamp bead testing device according to an embodiment of the present invention;
fig. 2 is a schematic side view of a rear view of a device for testing an LED lamp bead according to an embodiment of the present invention;
FIG. 3 is a block diagram of a test circuit;
FIG. 4 is a schematic circuit diagram of a test circuit;
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1-2, it is the utility model discloses a LED lamp pearl testing arrangement of preferred embodiment, including box 1 and locate the test circuit in the box 1, test circuit can insert 100 supplyes 240V's alternating current power supply.
Referring to fig. 3, the test circuit includes a switch module 2, a fuse module 3, a first power supply J1, a second power supply J2, a voltage drop module 4, an automatic detection load module 5, a voltage/current meter 6, and a power indicator module 7. The switch module 2 is connected to the fuse module 3, and the fuse module 3 is connected to the first power supply J1 and the second power supply J2.
Referring to fig. 3 and 4, the first power supply J1 is connected to the voltage-reducing module 4, and the voltage-reducing module 4 includes a voltage regulator circuit from 48V to 5V and a voltage regulator circuit from 5V to 3.3V.
Specifically, the voltage stabilizing circuit for converting 48V to 5V comprises a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first voltage stabilizing chip U1, a schottky diode D1 and a winding inductor L1. The pin 1 of the first power supply J1 is connected to GND (GND in the circuit diagram refers to the short word of the ground terminal of the electric wire, and represents the common terminal of the ground wire or the 0 line), the pin 2 of the first power supply J1 is connected to the pin 1 of the first voltage stabilizing chip U1, and the pin 1 of the first voltage stabilizing chip U1 is the terminal 48V. The pins 3 and 5 of the first voltage-stabilizing chip U1 are connected to GND, the pin 2 is connected to the cathode of the schottky diode D1 and the winding inductor L1, and the anode of the schottky diode D1 is connected to GND. The first capacitor C1 and the second capacitor C2 are respectively connected in parallel between a pin 2 of the first power supply J1, a pin 1 of the first voltage stabilization chip U1 and GND, the third capacitor C3 and the fourth capacitor C4 are respectively connected in parallel between the winding inductor L1 and a pin 4 of the first voltage stabilization chip U1 and GND, and the pin 4 of the first voltage stabilization chip U1 is a 5V end. Preferably, the first voltage regulation chip U1 is an LM2576 HV-5V voltage regulation integrated circuit chip.
Specifically, the voltage stabilizing circuit for converting 5V to 3.3V includes a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, and a second voltage stabilizing chip U2. A pin 1 of the second voltage stabilization chip U2 is connected with GND, a fifth capacitor C5 and a sixth capacitor C6 are respectively connected between a pin 3 of the second voltage stabilization chip U2 and GND in parallel, and the pin 3 of the second voltage stabilization chip U2 is a 5V end. The seventh capacitor C7 and the eighth capacitor C8 are respectively connected in parallel between the pin 2 and the pin 4 of the second zener chip U2 and the GND, and the pin 2 of the second zener chip U2 is a terminal 3.3V. Preferably, the second voltage regulation chip U2 is an LD 1117-3.3V voltage regulation integrated circuit chip.
Specifically, the second power supply J2 is connected to the auto-detection load module 5, and the auto-detection load module 5 includes a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, and a first light emitting diode D3. The pin 2 of the second power supply J2 is connected in series with the second resistor R2, the third resistor R3 and the fourth resistor R4 and then connected with the pin 3 of the voltage/current meter. One pin of the fifth resistor R5 is connected between the second resistor R2 and the third resistor R3 which are connected in series, the other pin of the fifth resistor R5 is connected with the anode of the first light-emitting diode D3, and the cathode of the first light-emitting diode D3 is connected between the third resistor R3 and the fourth resistor R4 which are connected in series. The automatic detection load module 5 has the functions of current limiting and voltage reducing, short circuit protection and automatic detection load output.
Specifically, pin 1 of the voltmeter/ammeter 6 is connected to the terminal 5V, pin 2 is connected to GND, pin 3 is connected to the fourth resistor R4 and forms the positive output terminal (red +), pin 4 forms the negative output terminal (black-), pin 5 is connected to pin 1 of the second power supply J2
Specifically, the power indicator module 7 includes a second light emitting diode D2 and a first resistor R1. The anode of the second light emitting diode D2 is connected to the 3.3V terminal, the cathode is connected to one pin of the first resistor R1, and the other pin of the first resistor R1 is connected to GND.
Referring to fig. 1-2, the rear side of the case 1 is provided with an ac power interface 11, the upper surface is provided with a switch button 12, and the front side is provided with a display 13, a positive interface 14 and a negative interface 15. The alternating current power supply interface 11 and the switch button 12 are both connected with the switch module, and the display screen 13 is connected with the voltage/ampere meter 6. The positive electrode interface 14 is connected with the positive electrode output end, and when the red electrode pen is used, the red electrode pen is connected into the positive electrode interface 14; the negative electrode interface 15 is connected with the negative electrode output end, and the black and red electrode pen is connected into the negative electrode interface 15 during use.
In the above embodiments, the first capacitor C1, the third capacitor C3, the fifth capacitor C5 and the eighth capacitor C8 are all ceramic capacitors, and the second capacitor C2, the fourth capacitor C4, the sixth capacitor C6 and the seventh capacitor C7 are all electrolytic capacitors.
In the above embodiment, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4 and the fifth resistor R5 are all cement resistors.
To sum up, the utility model provides a LED lamp pearl testing arrangement arranges test circuit in box 1, makes whole device simple structure portable. The test circuit comprises circuits such as a switching power supply, a current-limiting voltage reduction circuit, a short-circuit protection circuit and an automatic detection OUT circuit, the no-load voltage of the test circuit is DC46V, single or multiple LED lamp beads can be directly tested, the voltage value on the voltage/current meter 6 can automatically change, the structure that the power supply voltage value and the current limiting value are adjusted according to the number of the lamp beads before each test is not needed, and the test circuit has the advantages of high automation degree, simplicity in operation, friendly interface, stable performance, accuracy in test, high test speed and the like.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (5)
1. The LED lamp bead testing device is characterized by comprising a box body (1) and a testing circuit arranged in the box body (1);
the test circuit comprises a switch module (2), a fuse module (3), a first power supply (J1), a second power supply (J2), a voltage reduction module (4), an automatic detection load module (5) and a voltage/current meter (6);
the switch module (2) is connected with the fuse module (3), and the fuse module (3) is connected with the first power supply (J1) and a second power supply (J2);
the first power supply (J1) is connected with the voltage reduction module (4), and the voltage reduction module (4) comprises a voltage stabilizing circuit converting 48V into 5V and a voltage stabilizing circuit converting 5V into 3.3V;
the voltage stabilizing circuit for converting 48V into 5V comprises a first capacitor (C1), a second capacitor (C2), a third capacitor (C3), a fourth capacitor (C4), a first voltage stabilizing chip (U1), a Schottky diode (D1) and a winding inductor (L1); a pin 1 of the first power supply (J1) is connected with GND, a pin 2 of the first power supply (J1) is connected with a pin 1 of the first voltage-stabilizing chip (U1), and a pin 1 of the first voltage-stabilizing chip (U1) is a 48V end; the pins 3 and 5 of the first voltage stabilizing chip (U1) are connected with GND, the pin 2 is connected with the cathode of the Schottky diode (D1) and the winding inductor (L1), and the anode of the Schottky diode (D1) is connected with GND; the first capacitor (C1) and the second capacitor (C2) are respectively connected in parallel between the pin 2 of the first power supply (J1), the pin 1 of the first voltage-stabilizing chip (U1) and GND; the third capacitor (C3) and the fourth capacitor (C4) are respectively connected in parallel between the winding inductor (L1), the pin 4 of the first voltage stabilizing chip (U1) and GND, and the pin 4 of the first voltage stabilizing chip (U1) is a 5V end;
the voltage stabilizing circuit for converting 5V into 3.3V comprises a fifth capacitor (C5), a sixth capacitor (C6), a seventh capacitor (C7), an eighth capacitor (C8) and a second voltage stabilizing chip (U2); a pin 1 of the second voltage stabilization chip (U2) is connected with GND, the sixth capacitor (C6) and the fifth capacitor (C5) are respectively connected between a pin 3 of the second voltage stabilization chip (U2) and GND in parallel, and the pin 3 of the second voltage stabilization chip (U2) is a terminal 5V; the seventh capacitor (C7) and the eighth capacitor (C8) are respectively connected in parallel between the pin 2 and the pin 4 of the second voltage stabilizing chip (U2) and GND, and the pin 2 of the second voltage stabilizing chip (U2) is a 3.3V end;
the second power supply (J2) is connected with the automatic detection load module (5), and the automatic detection load module (5) comprises a second resistor (R2), a third resistor (R3), a fourth resistor (R4), a fifth resistor (R5) and a first light-emitting diode (D3); the pin 2 of the second power supply (J2) is connected with the second resistor (R2), the third resistor (R3) and the fourth resistor (R4) in series and then connected with the pin 3 of the voltage/current meter; one pin of the fifth resistor (R5) is connected between the second resistor (R2) and a third resistor (R3) which are connected in series, the other pin of the fifth resistor (R5) is connected with the anode of the first light-emitting diode (D3), and the cathode of the first light-emitting diode (D3) is connected between the third resistor (R3) and a fourth resistor (R4) which are connected in series;
a pin 1 of the voltage/current meter (6) is connected with a terminal 5V, a pin 2 is connected with GND, a pin 3 is connected with the fourth resistor (R4) and forms a positive electrode output terminal, a pin 4 forms a negative electrode output terminal, and a pin 5 is connected with a pin 1 of the second power supply (J2);
the surface of the box body is provided with an alternating current power supply interface (11), a switch button (12), a display screen (13), a positive electrode interface (14) and a negative electrode interface (15); alternating current power source interface (11) and shift knob (12) all with switch module connects, display screen (13) are connected with voltage/ampere meter (6), anodal interface (14) with anodal output connects, negative pole interface (15) with the negative pole output is connected.
2. The LED lamp bead testing device according to claim 1, further comprising a power indicator lamp module (7);
the power indicator light module (7) comprises a second light emitting diode (D2) and a first resistor (R1); the anode of the second light emitting diode (D2) is connected with the 3.3V end, the cathode of the second light emitting diode is connected with one pin of the first resistor (R1), and the other pin of the first resistor (R1) is connected with GND.
3. The LED lamp bead testing device according to claim 1 or 2, wherein the first capacitor (C1), the third capacitor (C3), the fifth capacitor (C5) and the eighth capacitor (C8) are all ceramic capacitors, and the second capacitor (C2), the fourth capacitor (C4), the sixth capacitor (C6) and the seventh capacitor (C7) are all electrolytic capacitors.
4. The LED lamp bead testing device according to claim 1 or 2, wherein the first resistor (R1), the second resistor (R2), the third resistor (R3), the fourth resistor (R4) and the fifth resistor (R5) are all cement resistors.
5. The LED lamp bead testing device according to claim 1 or 2, wherein the first voltage stabilizing chip (U1) is an LM2576 HV-5V voltage stabilizing integrated circuit chip, and the second voltage stabilizing chip (U2) is an LD 1117-3.3V voltage stabilizing integrated circuit chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023205889.7U CN214278348U (en) | 2020-12-25 | 2020-12-25 | LED lamp bead testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023205889.7U CN214278348U (en) | 2020-12-25 | 2020-12-25 | LED lamp bead testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214278348U true CN214278348U (en) | 2021-09-24 |
Family
ID=77784504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023205889.7U Active CN214278348U (en) | 2020-12-25 | 2020-12-25 | LED lamp bead testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214278348U (en) |
-
2020
- 2020-12-25 CN CN202023205889.7U patent/CN214278348U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110769564B (en) | Circuit capable of automatically adjusting output current along with input voltage and LED driving power supply | |
| CN100574046C (en) | Self-generating electricity super capacitor energy-storing power supply | |
| CN206321697U (en) | Overvoltage detection circuit and switching power supply circuit | |
| CN106558980B (en) | A kind of enabled control circuit | |
| CN107105542B (en) | A kind of under-voltage protecting circuit for LED lamp | |
| US11555849B2 (en) | Detection device for detecting line quality of electric circuit | |
| CN214278348U (en) | LED lamp bead testing device | |
| CN102375084A (en) | Voltage stabilizing diode detection circuit | |
| CN201277998Y (en) | Power-on indication circuit for electric power | |
| CN201497781U (en) | Resistance type power adapter aging device | |
| CN203133148U (en) | 100V/220V voltage arbiter | |
| CN211297042U (en) | Multifunctional indicator lamp control circuit | |
| CN210863881U (en) | Improved generation segmentation return circuit resistance tester | |
| CN1124493C (en) | Chargeable cell test loop contact resistance monitoring method | |
| CN219245663U (en) | Open-phase detection circuit of three-phase circuit | |
| CN212258771U (en) | Power supply circuit with voltage stabilization and under-voltage detection functions | |
| CN211456136U (en) | USB interface circuit and smart jack | |
| CN219179585U (en) | Module lamps and lanterns access state detection device | |
| CN111083850A (en) | LED detection device and detection method for automatically identifying positive and negative polarities | |
| CN216491138U (en) | High-voltage stroboflash-free LED lamp strip | |
| CN210986513U (en) | Power supply state indicating device of alternating current power supply | |
| CN214851919U (en) | LED protection circuit of excessive temperature excessive pressure undervoltage | |
| CN219697947U (en) | High-precision electric quantity indicating lamp circuit and battery pack | |
| CN217934774U (en) | Portable handcart detection device | |
| CN214795038U (en) | Overvoltage protector detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |