CN211014588U - L ED three-in-one tester - Google Patents

L ED three-in-one tester Download PDF

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Publication number
CN211014588U
CN211014588U CN201921811576.0U CN201921811576U CN211014588U CN 211014588 U CN211014588 U CN 211014588U CN 201921811576 U CN201921811576 U CN 201921811576U CN 211014588 U CN211014588 U CN 211014588U
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China
Prior art keywords
resistor
capacitor
pin
sensor
color temperature
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Expired - Fee Related
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CN201921811576.0U
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Chinese (zh)
Inventor
胡肖扬
连新泽
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Wenzhou University of Technology
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Wenzhou University Oujiang College
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Abstract

The utility model discloses a L ED trinity tester, which comprises a housin, be provided with the circuit board in the casing, be provided with the power on the circuit board and carry out the singlechip of supplying power by the power, illuminance detection module, colour temperature detection module and stroboscopic detection module, illuminance detection module is including illuminance sensor, colour temperature detection module includes colored temperature sensor, stroboscopic detection module is including stroboscopic sensor, illuminance sensor, colour temperature sensor and stroboscopic sensor all set up and are used for gathering illuminance, colour temperature sum frequency flash data respectively on the surface of casing, the singlechip respectively with illuminance sensor, colour temperature sensor and stroboscopic sensor constitute the electricity to be connected so that be used for receiving illuminance, colour temperature sum frequency flash data that the three gathered respectively, the beneficial effects of the utility model are that can detect L ED light source be illuminance, colour temperature sum frequency flash data, portability has been brought for L ED detection and analysis work.

Description

L ED three-in-one tester
Technical Field
The utility model relates to an optical-mechanical-electrical integration field, in particular to L ED trinity tester.
Background
The conventional L ED light source detection method comprises a special analyzer and manual visual inspection, the special analyzer is provided with a plurality of configurations, the cost is high, the specialization is strong, the requirement on a user is high, the method mainly faces to research and development departments of large-scale enterprises, small-scale enterprises with limited technical strength and fund generally adopt the manual visual inspection method, the defects are obvious, the requirements on the experience of detection personnel are met, the workload is high, the visual fatigue is easy, the missed detection and the misjudgment are caused, and finally the efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a three-in-one tester of L ED, what can detect L ED light source is illuminance, colour temperature and frequency flash data, has brought the portability for L ED detection analysis work.
The utility model discloses an above-mentioned technical scheme can be realized through following technical scheme a L ED trinity tester, which comprises a housin, the casing in be provided with the circuit board on be provided with the power and carry out singlechip, illuminance detection module, colour temperature detection module and the stroboscopic detection module that supplies power by the power, illuminance detection module including illuminance sensor, colour temperature detection module including colour temperature sensor, the stroboscopic detection module including the stroboscopic sensor, illuminance sensor, colour temperature sensor and stroboscopic sensor all set up and be used for gathering illuminance, colour temperature and stroboscopic data respectively on the surface of casing, the singlechip constitute the electricity with illuminance sensor, colour temperature sensor and stroboscopic sensor respectively and be connected in order to receive illuminance, colour temperature and the stroboscopic data that the three gathered respectively.
The further setting is that: and transparent protective shells are respectively covered on the positions of the shell surface corresponding to the illuminance sensor, the color temperature sensor and the stroboscopic sensor.
The further setting is that: the surface of the shell is provided with a plurality of key switches, and each key switch is connected to different enabling ends of the single chip microcomputer through a lead.
The further setting is that: the surface of the shell is provided with a liquid crystal display screen, and the liquid crystal display screen is powered by a power supply and is connected with the singlechip through a lead.
The stroboscopic detection module further comprises a capacitor C1, a resistor R1, a resistor R2 and a wiring terminal P1, the model of the stroboscopic sensor is TS L257, 1 pin of the stroboscopic sensor is connected to VCC of a power supply and the anode of the capacitor C1, the cathode of the capacitor C1 is grounded, 2 pins of the stroboscopic sensor are grounded, 3 pins of the stroboscopic sensor are connected to one end of the resistor R1 and one end of the R2, the other end of the resistor R1 is connected to VCC of the power supply, the other end of the resistor R2 is connected to 2 pins of the wiring terminal P1, 1 pin of the wiring terminal P1 is connected to VCC of the power supply, and 3 pins of the wiring terminal P1 are grounded.
The illuminance detection device further comprises a first voltage stabilizing circuit, a capacitor C2, a resistor R7, a resistor R8, a resistor R9 and a connecting terminal P9, wherein the first voltage stabilizing circuit comprises a first voltage stabilizing chip U9, a capacitor C9 and a capacitor C9, a pin 1 of the first voltage stabilizing chip U9 is connected with a pin 2 and connected to one end of the capacitor C9 and the anode of the capacitor C9 in parallel, the other end of the capacitor C9, the cathode of the capacitor C9 and a pin 3 of the first voltage stabilizing chip U9 are all grounded, a pin 5 of the first voltage stabilizing chip U9 is connected to the pin 1 of the illuminance sensor and the anode of the capacitor C9, the cathode of the capacitor C9 is grounded, the model number of the illuminance sensor TS 9 is TS 9, the pin 1 of the illuminance sensor is connected to one end of the capacitor C9, the other end of the capacitor C9 is grounded, the pin 2 and the pin 3 of the illuminance sensor are both grounded, the pin 6 of the illuminance sensor is connected to the connecting terminal P9 of the resistor R9, the terminal P72 of the illuminance sensor and the pin P72 of the terminal of the illuminance sensor, the resistor P9 are both connected to the terminal of the illuminance sensor pin 9, and the terminal of the illuminance sensor.
The further setting is that: the color temperature detection module further comprises a second voltage stabilizing circuit, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R10, a resistor R11, a resistor R12, a light emitting diode D1, an N-channel MOS tube Q1, an N-channel MOS tube Q2, an N-channel MOS tube Q3 and a connecting terminal P3; the second voltage stabilizing circuit comprises a second voltage stabilizing chip U5, a capacitor C6, a capacitor C7 and a capacitor C8, wherein a pin 1 of the second voltage stabilizing chip U5 is connected with a pin 2 and is connected to one end of a capacitor C8 and the anode of a capacitor C6 in parallel, the other end of the capacitor C8, the cathode of the capacitor C6 and a pin 3 of the second voltage stabilizing chip U5 are all grounded, a pin 5 of the second voltage stabilizing chip U5 is connected to a pin 1 of the color temperature sensor and the anode of the capacitor C7, and the cathode of the capacitor C7 is grounded; the model of the color temperature sensor is TCS34725, a pin 2 of the color temperature sensor is connected to one end of a resistor R6, the other end of a resistor R6 is connected to the positive electrode of a capacitor C7, a pin 3 of the color temperature sensor is grounded, a pin 6 of the color temperature sensor is connected to one end of a resistor R4, a pin 5 of the color temperature sensor is connected to one end of a resistor R5, and the other ends of a resistor R4 and a resistor R5 are both connected to the positive electrode of a capacitor C7; the 2 feet of the color temperature sensor are also connected with the source electrode of an N-channel MOS tube Q1, the grid electrode of the N-channel MOS tube Q1 is connected with the anode of a capacitor C7, the drain electrode of the N-channel MOS tube Q1 is connected with one end of a resistor R3 and the 5 feet of a connecting terminal P3, and the other end of the resistor R3 is connected with VCC of a power supply; the 6 feet of the color temperature sensor are also connected with the source electrode of an N-channel MOS tube Q2, the grid electrode of the N-channel MOS tube Q2 is connected with the anode of a capacitor C7, the drain electrode of the N-channel MOS tube Q2 is connected with one end of a resistor R10 and the 4 feet of a connecting terminal P3, and the other end of the resistor R10 is connected with VCC of a power supply; the pin 1 of the color temperature sensor is also connected with one end of a resistor R12, the other end of the resistor R12 is connected with the grid of an N-channel MOS tube Q3 and the pin 3 of a connecting terminal P3, the source of the N-channel MOS tube Q3 is grounded, the drain of the N-channel MOS tube Q3 is connected with the cathode of a light emitting diode D1, the anode of a light emitting diode D1 is connected with one end of a resistor R11, the other end of the resistor R11 is connected with the anode of a capacitor C7, the pin 1 of the connecting terminal P3 is connected with VCC of a power supply, the pin 2 of the connecting terminal P3 is
The utility model has the advantages that:
1. the utility model discloses an integrated light intensity sensor module, photochromic temperature sensor module, the light frequency dodge this three module of sensor module, for L ED light source's detection has brought the portability, and the test of messenger is more convenient, and has advantage with low costs.
2. Be provided with transparent protective housing on the casing, can effectually protect illuminance sensor, colour temperature sensor and stroboscopic sensor, increase of service life.
3. The utility model discloses a general electronic component designs, and not only electronic component's price is low, and the circuit diagram wiring that discloses is detailed, complete, has the enforceability, can effectually detect out L ED's illuminance, colour temperature and sum frequency flash of light data.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment;
FIG. 2 is an overall functional block diagram of the embodiment;
FIG. 3 is a detailed circuit diagram of a strobe detection module according to an embodiment;
FIG. 4 is a specific circuit diagram of an embodiment of a light level detecting module;
FIG. 5 is a specific circuit diagram of the color temperature detection module in the embodiment.
In the figure: 11. a housing; 12. a transparent protective shell; 13. a key switch; 14. a liquid crystal display screen; 21. a power source; 22. a light intensity detection module; 23. a color temperature detection module; 24. a strobe detection module; 25. and a single chip microcomputer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 5, an L ED three-in-one tester includes a housing 11, a circuit board is disposed in the housing 11, a power supply 21 and a single chip 25 powered by the power supply 21 are disposed on the circuit board, an illuminance detection module 22, a color temperature detection module 23 and a strobe detection module 24 are disposed on the circuit board, the illuminance detection module 22 includes an illuminance sensor, the color temperature detection module 23 includes a color temperature sensor, the strobe detection module 24 includes a strobe sensor, and the illuminance sensor, the color temperature sensor and the strobe sensor are disposed on the surface of the housing 11 and used for collecting illuminance, color temperature and strobe data, respectively;
the single chip microcomputer 25 is electrically connected with the illuminance sensor, the color temperature sensor and the strobe sensor respectively and used for receiving illuminance, color temperature and strobe data respectively collected by the illuminance sensor, the color temperature sensor and the strobe sensor.
The surface of the shell 11 is covered with transparent protective shells 12 corresponding to the positions of the illuminance sensor, the color temperature sensor and the stroboscopic sensor.
The surface of the shell 11 is provided with a plurality of key switches 13, and each key switch 13 is connected to different enabling ends of the single chip microcomputer 25 through a lead respectively.
The surface of the shell 11 is provided with a liquid crystal display 14, and the liquid crystal display 14 is powered by a power supply 21 and is connected with the singlechip 25 through a lead.
In this embodiment, the model of the single chip microcomputer 25 is ATMEGA328P, the model of the stroboscopic sensor is TS L257, the model of the illuminance sensor is RT9193, the model of the light and temperature sensor is TCS34725, specific peripheral circuits of the stroboscopic sensor are shown in fig. 3, 4 and 5, parameters of electronic components of the peripheral circuits are also shown in the drawings, and the electronic components belong to basic cognition, and workers in the electronic field can understand that in this embodiment, the connection terminal P1, the connection terminal P2 and the connection terminal P3 are connected with the enabling terminal of the single chip microcomputer 25 to realize communication, and are used as a basic application of the single chip microcomputer 25, the key switch 13 is a light touch switch and is connected with the enabling terminal of the single chip microcomputer 25, and has two states based on the change of high and low levels, and the liquid crystal display 14 is L CD1206 which is a very common model used in the electronic field, and will not be described here.
In addition, the specific circuits of the illuminance detection module 22, the color temperature detection module 23, and the flash detection module 24 in this embodiment are described as follows, where the power supply 21 is a 5V dc voltage, the types of the first voltage stabilization chip U4 and the second voltage stabilization chip U5 are both RT9193, and the 5V dc voltage can be stabilized to a 3.3V dc voltage; in specific application, only one voltage stabilizing chip is needed.
In the drawing, the strobe sensor is labeled as U1, the illuminance sensor is labeled as U3, and the color temperature sensor is labeled as U2.
Wherein, stroboscopic detection module 24 is still including electric capacity C1, resistance R1, resistance R2 and binding post P1, stroboscopic sensor's model is TS L257, VCC and electric capacity C1's positive pole at power 21 is connected to this stroboscopic sensor's 1 foot, electric capacity C1's negative pole ground connection, 2 feet ground connection of stroboscopic sensor, resistance R1's one end and R2's one end are connected to stroboscopic sensor's 3 feet, power 21's VCC is connected to resistance R1's the other end, binding post P1's 2 feet are connected to resistance R2's the other end, binding post P1's 1 foot connects power 21's VCC, binding post P1's 3 feet ground connection.
The illuminance detection device also comprises a first voltage stabilizing circuit, a capacitor C2, a resistor R7, a resistor R8, a resistor R9 and a wiring terminal P2;
the first voltage stabilizing circuit comprises a first voltage stabilizing chip U4, a capacitor C3, a capacitor C4 and a capacitor C5, wherein a pin 1 of the first voltage stabilizing chip U4 is connected with a pin 2 and is connected to one end of a capacitor C5 and the anode of a capacitor C3 in parallel, the other end of the capacitor C5, the cathode of the capacitor C3 and a pin 3 of the first voltage stabilizing chip U4 are all grounded, a pin 5 of the first voltage stabilizing chip U4 is connected to a pin 1 of the illuminance sensor and the anode of the capacitor C4, and the cathode of the capacitor C4 is grounded;
the model number of the illuminance sensor is TS L2561, a pin 1 of the illuminance sensor is connected to one end of a capacitor C2, the other end of a capacitor C2 is grounded, pins 2 and 3 of the illuminance sensor are grounded, a pin 6 of the illuminance sensor is connected to one end of a resistor R7 and a pin 3 of a connecting terminal P2, a pin 5 of the illuminance sensor is connected to one end of a resistor R8, a pin 4 of the illuminance sensor is connected to one end of a resistor R9 and a pin 4 of a connecting terminal P2, the other ends of the resistor R7, the resistor R8 and the resistor R9 are connected to the positive electrode of the capacitor C4, a pin 1 of the connecting terminal P2 is connected to VCC of a power supply 21, and a pin 2 of the connecting terminal P2 is grounded.
The color temperature detection module 23 further includes a second voltage stabilizing circuit, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R10, a resistor R11, a resistor R12, a light emitting diode D1, an N-channel MOS transistor Q1, an N-channel MOS transistor Q2, an N-channel MOS transistor Q3, and a connection terminal P3;
the second voltage stabilizing circuit comprises a second voltage stabilizing chip U5, a capacitor C6, a capacitor C7 and a capacitor C8, wherein a pin 1 of the second voltage stabilizing chip U5 is connected with a pin 2 and is connected to one end of a capacitor C8 and the anode of a capacitor C6 in parallel, the other end of the capacitor C8, the cathode of the capacitor C6 and a pin 3 of the second voltage stabilizing chip U5 are all grounded, a pin 5 of the second voltage stabilizing chip U5 is connected to a pin 1 of the color temperature sensor and the anode of the capacitor C7, and the cathode of the capacitor C7 is grounded;
the model of the color temperature sensor is TCS34725, a pin 2 of the color temperature sensor is connected to one end of a resistor R6, the other end of a resistor R6 is connected to the positive electrode of a capacitor C7, a pin 3 of the color temperature sensor is grounded, a pin 6 of the color temperature sensor is connected to one end of a resistor R4, a pin 5 of the color temperature sensor is connected to one end of a resistor R5, and the other ends of a resistor R4 and a resistor R5 are both connected to the positive electrode of a capacitor C7;
the 2 feet of the color temperature sensor are also connected with the source electrode of an N-channel MOS tube Q1, the grid electrode of the N-channel MOS tube Q1 is connected with the anode of a capacitor C7, the drain electrode of the N-channel MOS tube Q1 is connected with one end of a resistor R3 and the 5 feet of a connecting terminal P3, and the other end of the resistor R3 is connected with VCC of a power supply 21;
the 6 feet of the color temperature sensor are also connected with the source electrode of an N-channel MOS tube Q2, the grid electrode of the N-channel MOS tube Q2 is connected with the anode of a capacitor C7, the drain electrode of the N-channel MOS tube Q2 is connected with one end of a resistor R10 and the 4 feet of a connecting terminal P3, and the other end of the resistor R10 is connected with VCC of a power supply 21;
the pin 1 of the color temperature sensor is further connected to one end of a resistor R12, the other end of the resistor R12 is connected to the gate of an N-channel MOS tube Q3 and the pin 3 of a connecting terminal P3, the source of the N-channel MOS tube Q3 is grounded, the drain of the N-channel MOS tube Q3 is connected to the cathode of the light emitting diode D1, the anode of the light emitting diode D1 is connected to one end of the resistor R11, the other end of the resistor R11 is connected to the anode of a capacitor C7, the pin 1 of the connecting terminal P3 is connected to VCC of the power supply 21, and the pin 2 of the connecting terminal P3.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (7)

1. The L ED three-in-one tester is characterized by comprising a shell (11), wherein a circuit board is arranged in the shell (11), the circuit board is provided with a power supply (21) and a single chip microcomputer (25), a light illumination detection module (22), a color temperature detection module (23) and a stroboscopic detection module (24) which are powered by the power supply (21), the light illumination detection module (22) comprises a light illumination sensor, the color temperature detection module (23) comprises a colored temperature sensor, the stroboscopic detection module (24) comprises a stroboscopic sensor, and the light illumination sensor, the color temperature sensor and the stroboscopic sensor are all arranged on the surface of the shell (11) and are respectively used for collecting light illumination, color temperature and stroboscopic data;
the single chip microcomputer (25) is respectively and electrically connected with the illuminance sensor, the color temperature sensor and the stroboscopic sensor to receive illuminance, color temperature and stroboscopic data respectively collected by the illuminance sensor, the color temperature sensor and the stroboscopic sensor.
2. The L ED three-in-one tester as claimed in claim 1, wherein the positions of the housing (11) corresponding to the illuminance sensor, the color temperature sensor and the strobe sensor are respectively covered with a transparent protective shell (12).
3. The L ED three-in-one tester as claimed in claim 1, wherein the surface of the housing (11) is provided with a plurality of key switches (13), and each key switch (13) is connected to different enabling ends of the single chip microcomputer (25) through wires.
4. The L ED three-in-one tester as claimed in claim 1, wherein the casing (11) has a liquid crystal display (14) on its surface, the liquid crystal display (14) is powered by a power supply (21) and is connected to the single chip microcomputer (25) via wires.
5. The L ED three-in-one tester as claimed in claim 1, wherein the stroboscopic detection module (24) further comprises a capacitor C1, a resistor R1, a resistor R2 and a connection terminal P1, the model of the stroboscopic sensor is TS L, 1 pin of the stroboscopic sensor is connected to VCC of the power supply (21) and the positive electrode of the capacitor C1, the negative electrode of the capacitor C1 is grounded, 2 pins of the stroboscopic sensor are grounded, 3 pins of the stroboscopic sensor are connected to one end of the resistor R1 and one end of the resistor R2, the other end of the resistor R1 is connected to VCC of the power supply (21), the other end of the resistor R2 is connected to 2 pins of the connection terminal P1, 1 pin of the connection terminal P1 is connected to VCC of the power supply (21), and 3 pins of the connection terminal P1.
6. The L ED three-in-one tester as claimed in claim 1, wherein the illuminance test further includes a first voltage regulator circuit, a capacitor C2, a resistor R7, a resistor R8, a resistor R9 and a connecting terminal P2;
the first voltage stabilizing circuit comprises a first voltage stabilizing chip U4, a capacitor C3, a capacitor C4 and a capacitor C5, wherein a pin 1 of the first voltage stabilizing chip U4 is connected with a pin 2 and is connected to one end of a capacitor C5 and the anode of a capacitor C3 in parallel, the other end of the capacitor C5, the cathode of the capacitor C3 and a pin 3 of the first voltage stabilizing chip U4 are all grounded, a pin 5 of the first voltage stabilizing chip U4 is connected to a pin 1 of the illuminance sensor and the anode of the capacitor C4, and the cathode of the capacitor C4 is grounded;
the model number of the illuminance sensor is TS L2561, a pin 1 of the illuminance sensor is connected to one end of a capacitor C2, the other end of a capacitor C2 is grounded, pins 2 and 3 of the illuminance sensor are grounded, a pin 6 of the illuminance sensor is connected to one end of a resistor R7 and a pin 3 of a connecting terminal P2, a pin 5 of the illuminance sensor is connected to one end of a resistor R8, a pin 4 of the illuminance sensor is connected to one end of a resistor R9 and a pin 4 of a connecting terminal P2, the other ends of the resistor R7, the resistor R8 and the resistor R9 are connected to the positive electrode of the capacitor C4, a pin 1 of the connecting terminal P2 is connected to VCC of a power supply (21), and a pin 2 of the connecting terminal P2 is grounded.
7. The L ED three-in-one tester as claimed in claim 1, wherein the color temperature detecting module (23) further comprises a second voltage regulator circuit, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R10, a resistor R11, a resistor R12, a light emitting diode D1, an N-channel MOS transistor Q1, an N-channel MOS transistor Q2, an N-channel MOS transistor Q3 and a connecting terminal P3;
the second voltage stabilizing circuit comprises a second voltage stabilizing chip U5, a capacitor C6, a capacitor C7 and a capacitor C8, wherein a pin 1 of the second voltage stabilizing chip U5 is connected with a pin 2 and is connected to one end of a capacitor C8 and the anode of a capacitor C6 in parallel, the other end of the capacitor C8, the cathode of the capacitor C6 and a pin 3 of the second voltage stabilizing chip U5 are all grounded, a pin 5 of the second voltage stabilizing chip U5 is connected to a pin 1 of the color temperature sensor and the anode of the capacitor C7, and the cathode of the capacitor C7 is grounded;
the model of the color temperature sensor is TCS34725, a pin 2 of the color temperature sensor is connected to one end of a resistor R6, the other end of a resistor R6 is connected to the positive electrode of a capacitor C7, a pin 3 of the color temperature sensor is grounded, a pin 6 of the color temperature sensor is connected to one end of a resistor R4, a pin 5 of the color temperature sensor is connected to one end of a resistor R5, and the other ends of a resistor R4 and a resistor R5 are both connected to the positive electrode of a capacitor C7;
the 2 feet of the color temperature sensor are also connected with the source electrode of an N-channel MOS tube Q1, the grid electrode of the N-channel MOS tube Q1 is connected with the anode of a capacitor C7, the drain electrode of the N-channel MOS tube Q1 is connected with one end of a resistor R3 and the 5 feet of a connecting terminal P3, and the other end of the resistor R3 is connected with VCC of a power supply (21);
the 6 feet of the color temperature sensor are also connected with the source electrode of an N-channel MOS tube Q2, the grid electrode of the N-channel MOS tube Q2 is connected with the anode of a capacitor C7, the drain electrode of the N-channel MOS tube Q2 is connected with one end of a resistor R10 and the 4 feet of a connecting terminal P3, and the other end of the resistor R10 is connected with VCC of a power supply (21);
the pin 1 of the color temperature sensor is also connected to one end of a resistor R12, the other end of the resistor R12 is connected to the gate of an N-channel MOS tube Q3 and the pin 3 of a connecting terminal P3, the source of the N-channel MOS tube Q3 is grounded, the drain of the N-channel MOS tube Q3 is connected to the cathode of a light emitting diode D1, the anode of a light emitting diode D1 is connected to one end of a resistor R11, the other end of the resistor R11 is connected to the anode of a capacitor C7, the pin 1 of the connecting terminal P3 is connected to VCC of a power supply (21), and the pin 2 of the connecting terminal P3 is.
CN201921811576.0U 2019-10-26 2019-10-26 L ED three-in-one tester Expired - Fee Related CN211014588U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921811576.0U CN211014588U (en) 2019-10-26 2019-10-26 L ED three-in-one tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921811576.0U CN211014588U (en) 2019-10-26 2019-10-26 L ED three-in-one tester

Publications (1)

Publication Number Publication Date
CN211014588U true CN211014588U (en) 2020-07-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921811576.0U Expired - Fee Related CN211014588U (en) 2019-10-26 2019-10-26 L ED three-in-one tester

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Country Link
CN (1) CN211014588U (en)

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