CN216926951U - Quick testing device for vulnerable components of power amplifier module circuit board - Google Patents
Quick testing device for vulnerable components of power amplifier module circuit board Download PDFInfo
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- CN216926951U CN216926951U CN202123445977.9U CN202123445977U CN216926951U CN 216926951 U CN216926951 U CN 216926951U CN 202123445977 U CN202123445977 U CN 202123445977U CN 216926951 U CN216926951 U CN 216926951U
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Abstract
The utility model provides a quick testing device for vulnerable components of a power amplifier module circuit board, which comprises a testing panel, a testing table, a signal generating part, a display part, a power supply part, a grounding sheet and a switch assembly, wherein the testing table, the signal generating part, the display part, the power supply part, the grounding sheet and the switch assembly are arranged on the testing panel; the switch assembly comprises a power supply main switch, a calibration switch, a test switch, a signal control switch and a display switch. The utility model solves the problem that vulnerable parts of the power amplifier module circuit board cannot be directly checked, has the advantages of safety, reliability, rapidness and accuracy, has low cost, and saves a large amount of manpower, material resources and financial resources for large-scale batch production of the power amplifier module.
Description
Technical Field
The utility model relates to the technical field of tests and tests, in particular to a quick test device for vulnerable components of a power amplifier module circuit board.
Background
At present, power amplifier modules are widely applied to radars with multiple models. The power amplifier module circuit board has two important wearing parts, namely a MAX4420 type power switch and an MC78M05 type voltage converter, which are welded on a printed board through an SMT (surface mount technology) chip mounting process. When the power amplifier module is produced in large scale in batch, the accuracy and the rapidity of the welding inspection of the circuit board of the power amplifier module also have higher requirements.
As no direct, quick and effective method for quality inspection of the welded circuit board exists at present, all the welded circuit boards are generally qualified by default in batch production. Only when the circuit board is arranged in the cavity of the power amplifier module for debugging, the real state of the circuit board can be verified, and whether the welding of the easily damaged part of the circuit board is qualified or not is confirmed. In addition, when judging that power amplifier module trouble is because circuit board welding is unqualified when causing, then need weld the split to power amplifier module and reprocess, the reprocess process is complicated and the success rate is low, very easily leads to power amplifier module to scrap to cause the waste of cost of labor, time cost and material cost.
Considering that the accuracy of the inspection is improved, a large amount of fault waste is avoided, the time cost and labor cost of the inspection are saved, and a testing device which is efficient, quick and high in accuracy rate needs to be developed to detect the vulnerable parts of the circuit board of the power amplifier module, so that the problem of circuit board inspection in large-scale batch production of the power amplifier module is solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a quick testing device for vulnerable components of a power amplifier module circuit board, which can quickly and accurately detect the welding quality of an MAX4420 type power switch and an MC78M05 type voltage converter of the power amplifier module circuit board.
The technical scheme of the utility model is as follows:
a quick test device for vulnerable components of a power amplifier module circuit board comprises a test panel, and a test board, a signal generation part, a display part, a power supply part, a grounding piece and a switch assembly which are arranged on the test panel; the switch assembly comprises a power supply main switch, a calibration switch, a test switch, a signal control switch and a display switch;
the test bench comprises a test fixture for clamping and fixing a circuit board to be tested and a test probe for connecting the circuit board to be tested with the signal generating component and the display component; the power supply component is used for providing working power supply for the test panel, the test bench, the signal generation component and the display component; the grounding sheet is used for grounding the circuit board to be tested;
the power supply main switch is used for controlling the power on and power off of the test panel, the test bench, the signal generating component and the display component; the calibration switch is used for controlling the connection and disconnection between the signal generating part and the display part; the test switch, the signal control switch and the display switch are respectively used for controlling the test bench, the signal generating component and the display component to be started and closed.
The quick test device for the vulnerable components of the power amplifier module circuit board is characterized in that the test panel is a polytetrafluoroethylene plate.
The quick test device for the vulnerable components of the power amplifier module circuit board is characterized in that the signal generating part adopts a miniature pulse signal generator.
The quick testing device for the vulnerable components of the power amplifier module circuit board is characterized in that the display part adopts a miniature oscilloscope.
The quick test device for the vulnerable components of the power amplifier module circuit board is characterized in that a power adapter for converting 100-240V alternating current into 28V direct current is adopted as a power supply part.
The signal control switch is used for controlling the starting and the closing of the signal generating part during the first test and the last test, and controlling the reset initialization setting of the signal generating part during the continuous test for a plurality of times.
According to the technical scheme, the problem that the vulnerable parts of the power amplifier module circuit board cannot be directly checked is solved, the power amplifier module circuit board quick-wear part inspection method has the advantages of safety, reliability, rapidness and accuracy, the cost is low, and a large amount of manpower, material resources and financial resources are saved for large-scale mass production of the power amplifier module.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic circuit diagram of a vulnerable part of a circuit board to be tested on a testing platform according to the present invention, wherein (a) is a schematic circuit diagram of an MC78M05 type voltage converter, and (b) is a schematic circuit diagram of a MAX4420 type power switch;
fig. 3 is a schematic diagram of the principle of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a fast testing device for vulnerable components of a power amplifier module circuit board comprises a testing panel 1, and a testing platform 2, a signal generating component 3, a display component 4, a power supply component 5, a grounding sheet 6 and a switch assembly which are arranged on the testing panel 1. The switch assembly comprises a power supply main switch 7, a calibration switch 8, a test switch 9, a signal control switch 10 and a display switch 11.
The test panel 1 is made of a polytetrafluoroethylene plate and has the characteristics of insulation, high temperature resistance, corrosion resistance and wear resistance.
The test bench 2 comprises a test fixture and a test probe, wherein the test fixture is used for clamping and fixing a circuit board to be tested; the test probe is used for connecting the output end of the signal generating component 3 with the input end of the circuit board to be tested and is also used for connecting the output end of the circuit board to be tested with the input end of the display component 4.
The signal generating part 3 adopts a miniature pulse signal generator, the input voltage of which is initially set to be 28V, the pulse signal period is 10ms, and the duty ratio is 10%.
The display part 4 adopts a miniature oscilloscope, and can visually display the test result.
The power supply part 5 adopts a power adapter for converting 100-240V alternating current into 28V direct current and is used for providing working power for the test panel 1, the test board 2, the signal generating part 3 and the display part 4; the wide voltage design is selected, the plug-and-play voltage regulator is suitable for voltages of different grades, and is plug-and-play, convenient and fast.
The grounding strip 6 is used for grounding the circuit board to be tested, as shown in fig. 2, on the circuit board to be tested, the ports 2, 4, 5, 6 and 7 of the MAX4420 type power switch are all effectively grounded, and the ports 1, 2 and 3 of the MC78M05 type voltage converter are all effectively grounded; and when testing, directly give MC78M05 type voltage converter power supply by power supply unit 5, guarantee to wait other components and parts of circuit board not damaged.
As shown in fig. 3, the power main switch 7 is used to control the on/off of the test panel 1, the test stand 2, the signal generating part 3, and the display part 4. The calibration switch 8 is used to control connection and disconnection between the signal generating section 3 and the display section 4. The test switch 9 is used to control the start and the shut-off of the test bench 2. The signal control switch 10 is used for controlling the start and stop of the signal generating part 3 at the first and last test, and controlling the reset initialization setting of the signal generating part 3 at a plurality of continuous tests. The display switch 11 is used to control the activation and deactivation of the display part 4.
The working principle of the utility model is as follows:
before the test is started, the grounding sheet 6 is ensured to be reliably grounded, and the phenomenon of aging and damage of the circuit is confirmed to be avoided.
In the first step, the test fixture and test probes of the test station 2 are cleaned and scrubbed with alcohol.
And secondly, adjusting the power supply main switch 7, the calibration switch 8, the test switch 9, the signal control switch 10 and the display switch 11 to OFF levels respectively.
And thirdly, connecting the power supply part 5 with 220V alternating voltage, adjusting the power main switch 7 to an ON gear, and electrifying the device.
And fourthly, turning the display switch 11 to an ON gear, waiting for the display part 4 to be started, and turning the signal control switch 10 to the ON gear after the waveform is stabilized.
And fifthly, adjusting the calibration switch 8 to an ON gear, and observing the input voltage, the pulse signal period and the duty ratio displayed by the display part 4.
Sixthly, when the display part 4 displays the input voltage 28V, the pulse signal period is 10ms and the duty ratio is 10%, the calibration switch 8 is adjusted to an OFF gear.
And seventhly, mounting the circuit board to be tested on the test bench 2 according to the identification requirement, and connecting a 28V power supply to a port 1 of the MC78M05 type voltage converter by adopting an alligator clip.
Eighthly, connecting a port 2 of the MAX4420 type power switch with a signal generating component 3 by using a test probe, and inputting a pulse signal; connecting ports 6 and 7 of the MAX4420 type power switch with the display part 4 by adopting a test probe, and outputting signals; the test switch 9 is turned to the ON position. And observing display data on the display part 4, when the input voltage is displayed to be 0.46-0.48V, the pulse signal period is 10ms and the duty ratio is 10%, indicating that the vulnerable component of the circuit board to be tested is welded to be qualified, turning the test switch 9 to an OFF gear, and taking down the circuit board to be tested.
And step nine, turning the display switch 11 and the signal control switch 10 to an OFF gear, turning the power main switch 7 to an OFF gear, and cutting OFF the power supply of the power supply part 5.
When the test is continuously carried out for a plurality of times, the work from the first step to the sixth step is only needed to be carried out during the first test, after the eighth step of the first test is finished in the subsequent test, the signal control switch 10 is just required to be adjusted to the OFF gear, the control signal generating part 3 is used for carrying out reset initialization setting, then the signal control switch 10 is adjusted to the ON gear, and the seventh step and the eighth step are repeated. Therefore, a large amount of preparation work before testing is effectively saved, and a guarantee is provided for realizing large-batch rapid testing.
All the components of the utility model can be randomly selected and matched according to the preference and habit of a user, wherein the signal generating component and the display component are respectively realized by adopting a simple signal generator and an oscilloscope, the purchasing cost is low, the operation interface is simple, the test result expression is visual, the operation is convenient, the operation is simple and easy to learn, and the manual operation errors can be effectively avoided.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (6)
1. The utility model provides a quick testing arrangement that is used for quick components and parts of power amplifier module circuit board, its characterized in that: the device comprises a test panel, a test board, a signal generation part, a display part, a power supply part, a grounding sheet and a switch assembly, wherein the test board, the signal generation part, the display part, the power supply part, the grounding sheet and the switch assembly are arranged on the test panel; the switch assembly comprises a power supply main switch, a calibration switch, a test switch, a signal control switch and a display switch;
the test bench comprises a test fixture for clamping and fixing a circuit board to be tested and a test probe for connecting the circuit board to be tested with the signal generating component and the display component; the power supply component is used for providing working power supply for the test panel, the test bench, the signal generation component and the display component; the grounding sheet is used for grounding the circuit board to be tested;
the power supply main switch is used for controlling the power on and power off of the test panel, the test bench, the signal generating component and the display component; the calibration switch is used for controlling the connection and disconnection between the signal generating part and the display part; the test switch, the signal control switch and the display switch are respectively used for controlling the test bench, the signal generating component and the display component to be started and closed.
2. The rapid test device for vulnerable components of power amplifier module circuit board according to claim 1, characterized in that: the test panel adopts a polytetrafluoroethylene plate.
3. The rapid test device for vulnerable components of power amplifier module circuit board according to claim 1, characterized in that: the signal generating component adopts a miniature pulse signal generator.
4. The rapid test device for vulnerable components of power amplifier module circuit board according to claim 1, characterized in that: the display component adopts a miniature oscilloscope.
5. The rapid test device for vulnerable components of power amplifier module circuit board according to claim 1, characterized in that: the power supply part adopts a power adapter for converting 100-240V alternating current into 28V direct current.
6. The rapid test device for vulnerable components of power amplifier module circuit board according to claim 1, characterized in that: the signal control switch is used for controlling the starting and the closing of the signal generating component during the first test and the last test, and controlling the reset initialization setting of the signal generating component during the continuous tests for a plurality of times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123445977.9U CN216926951U (en) | 2021-12-30 | 2021-12-30 | Quick testing device for vulnerable components of power amplifier module circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123445977.9U CN216926951U (en) | 2021-12-30 | 2021-12-30 | Quick testing device for vulnerable components of power amplifier module circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216926951U true CN216926951U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123445977.9U Active CN216926951U (en) | 2021-12-30 | 2021-12-30 | Quick testing device for vulnerable components of power amplifier module circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216926951U (en) |
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2021
- 2021-12-30 CN CN202123445977.9U patent/CN216926951U/en active Active
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