CN110146829A - A kind of direct-current switch power supply fault diagnosis easily-testing instrument and test method - Google Patents
A kind of direct-current switch power supply fault diagnosis easily-testing instrument and test method Download PDFInfo
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- CN110146829A CN110146829A CN201910475905.7A CN201910475905A CN110146829A CN 110146829 A CN110146829 A CN 110146829A CN 201910475905 A CN201910475905 A CN 201910475905A CN 110146829 A CN110146829 A CN 110146829A
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- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 238000003745 diagnosis Methods 0.000 title claims abstract description 13
- 238000010998 test method Methods 0.000 title description 5
- 238000001514 detection method Methods 0.000 claims abstract description 65
- 238000000034 method Methods 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 6
- 206010034133 Pathogen resistance Diseases 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The present invention relates to a kind of direct-current switch power supply fault diagnosis easily-testing instrument, test circuit includes: to switch the first series arm constituted by the first detection indicator light and the first detection button, the second series arm constituted is switched by the second detection indicator light and the second detection button, load circuit includes D.C. voltmeter and light bulb in parallel, and load circuit forms a pair of of lead-in clamp.It is closed together according to the watt level of direct-current switch power supply, selection the first detection button of closure switch or the first detection button switch with the second detection button switch when test；The different conditions of indicator light or the second detection indicator light and the state of output circuit light bulb are detected according to input circuit first, carry out the judgement of the fault point of direct-current switch power supply.The present invention first reduces the scope fault point, then the quality of detection component is gone with conventional tool, greatly improves maintenance efficiency, more quickly, simply, safely；The configuration of the present invention is simple, economic cost is low, easy to operate.
Description
Technical field
The invention belongs to direct-current switch power supply fault diagnosis technology fields, and in particular to a kind of direct-current switch power supply failure is examined
Disconnected easily-testing instrument and test method, it is very convenient and practical for the maintenance of direct-current switch power supply, compare traditional direct-electrifying
Method for testing and detecting, more quickly, simply, safely.
Background technique
Direct-current switch power supply is widely used in the factory, for the fault detection of direct-current switch power supply, currently on the market
There is no easy detecting instrument, maintenance person is most of according to service experience, detects the good of component one by one using traditional tool
It is bad.
Direct-current switch power supply circuit is all made of several conventional electrical components, can using conventional tool such as multimeter
With measurement.But since component is more, often assistant from nowhere.
In addition, if direct-electrifying is tested, existing for maintenance mans author tight since direct-current switch power supply is 220V input
Weight security risk be easy to cause personal injury or power switch to trip
Summary of the invention
In order to solve the above-mentioned technical problem, quickly and easily lock direct-current switch power supply fault coverage, the present invention according to
The characteristics of every partial circuit of direct-current switch power supply, working principle and phenomenon of the failure propose a kind of direct-current switch power supply failure
Easily-testing instrument and test method are diagnosed, it is very convenient and practical for the maintenance of direct-current switch power supply.Skill of the present invention
Art scheme is as follows:
A kind of direct-current switch power supply fault diagnosis easily-testing instrument, comprising: test circuit, load circuit, the test
Circuit includes: to switch the first series arm constituted by the first detection indicator light and the first detection button, is indicated by the second detection
After the second series arm that lamp and the second detection button switch are constituted, the first series arm and the parallel connection of the second series arm, pass through
Alternating current ammeter is in parallel with A.C. voltmeter, and one end of the test circuit is through attaching plug access 220V alternating current, test
The other end of circuit forms a pair of of output wiring terminal；
The load circuit includes D.C. voltmeter and light bulb in parallel, and load circuit forms a pair of of lead-in clamp.
A kind of direct-current switch power supply fault diagnosis simple method for testing bacterial resistance, comprising the following steps:
Direct-current switch power supply to be measured is accessed easily-testing instrument, the input terminal of direct-current switch power supply to be tested and one by step 1
Output wiring terminal is electrically connected, the output end of direct-current switch power supply to be tested is electrically connected with a pair of of lead-in clamp, is inserted after connecting
Upper attaching plug；
Step 2, the watt level according to direct-current switch power supply, selection the first detection button of closure switch or the first detection
Button switch is closed together with the second detection button switch；
Step 3, the switch for opening direct-current switch power supply to be measured detect indicator light or the second detection according to input circuit first
The different conditions of indicator light and the state of output circuit light bulb, carry out the judgement of the fault point of direct-current switch power supply.
Preferably, the fault judgment method that the trouble spot judging of direct-current switch power supply is carried out described in step 3 is as follows:
1. after being powered the first detection indicator light or the second detection indicator light it is bright it is primary go out, output circuit light bulb length it is bright, then
Judge direct-current switch power supply normally export, work normally, fault-free；
2. the first detection indicator light or the second detection indicator light length are bright after being powered, illustrate input rectifying filter circuit or switch
Inverter circuit has short-circuit conditions, checks this two parts circuit；
3. the first detection indicator light or the second detection indicator light do not work after being powered, illustrate that input rectifying filter circuit is opened a way,
Direct-current switch power supply does not work, and first checks fuse, fuse no problem, then look into whether high-voltage filtering capacitor has 310V's or so
Voltage；If nothing, check whether error amplifier feed circuit and filter circuit are normal, if there is voltage, checks switch electricity
Whether the chip in source has operating voltage and output voltage；
4. the first detection indicator light or the second detection indicator light flashing, illustrate that output rectifier and filter is protected after being powered,
Check output rectifier and filter；
5. the first detection indicator light or the second detection indicator light are dimmed after being powered, illustrate the rectification of input rectifying filter circuit
Bridge is bad, checks the diode of rectifier bridge.
Beneficial effects of the present invention:
1) easily-testing instrument and test method of the invention are applied, first fault point is reduced the scope, then is gone with conventional tool
The quality for detecting component, can greatly improve maintenance efficiency；
2) compared with traditional direct-electrifying method for testing and detecting, the present invention is more quick, simple, safe；
3) easily-testing instrument structure of the invention is simple, and economic cost is low, easy to operate.
Detailed description of the invention
Fig. 1 is the direct-current switch power supply circuit diagram to be detected of the embodiment of the present invention；
Fig. 2 is the direct-current switch power supply schematic illustration to be detected of the embodiment of the present invention；
Fig. 3 is the circuit theory schematic diagram of the easily-testing instrument of the embodiment of the present invention；
Fig. 4 is the material object and test connection schematic diagram of the easily-testing instrument of the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawing, embodiments of the present invention are illustrated.
As shown in Figure 1, being the direct-current switch power supply circuit diagram to be detected of the embodiment of the present invention.For convenience of analysis, this implementation
Example uses common CL-A-35-24 direct-current switch power supply, uses DC24V Switching Power Supply as test circuit.CL-A-35-24 direct current
Switching Power Supply, rated power 35W, exporting specified (adjustable) voltage is DC24V, and the precision of voltage regulation is higher, to overload, short circuit event
Barrier has preferable defencive function.
As shown in Fig. 2, being the direct-current switch power supply schematic illustration to be detected of the embodiment of the present invention.Direct-current switch power supply by
Input rectifying filter circuit, switching inverter circuit, high frequency transformer circuit, output rectifier and filter, error amplifier are anti-
Current feed circuit, pulse control circuit and reference voltage circuit composition.
As shown in figure 3, the circuit theory schematic diagram of the easily-testing instrument for the embodiment of the present invention.A kind of direct-current switch power supply
Fault diagnosis easily-testing instrument, comprising: test circuit, load circuit, the test circuit include: by detection indicator light L1 and
The series arm 1 that detection button switch K1 is constituted, the series arm being made of detection indicator light L2 and detection button switch K2, string
After joining branch 1 and 2 parallel connection of series arm, it is in parallel with A.C. voltmeter V1 through alternating current ammeter A1.The test circuit
220V alternating current is accessed through attaching plug in one end, and the other end for testing circuit forms a pair of of output wiring terminal, with direct current to be tested
The input terminal of Switching Power Supply is electrically connected.
The load circuit includes D.C. voltmeter V2 and light bulb L3 in parallel, and load circuit forms a pair of of input wires
Column is electrically connected with the output end of direct-current switch power supply to be tested.
In the present embodiment, electronic component parameter used by the test circuit part of easily-testing instrument is as follows: L1 and L2 inspection
Survey indicator light is that 220V/20W, K1 and K2 are common detection button switch, and alternating current ammeter A1 is 0-5A, A.C. voltmeter V1
For 0-300VAC.
In the present embodiment, electronic component parameter used by the load circuit part of easily-testing instrument is as follows: DC voltage
Table V 2 is 0-50V, and light bulb L3 is 36V/20W.
As shown in figure 4, for the material object and test connection schematic diagram of the easily-testing instrument of the embodiment of the present invention.Simple detector
Object construction includes: attaching plug, detector panel, and detection indicator light L1, detection indicator light are provided on detector panel
L2, detection button switch K1 and K2, A.C. voltmeter V1, alternating current Table A, a pair of of output wiring terminal, light bulb L3, DC voltage
Table V 2, a pair of of lead-in clamp.
A kind of direct-current switch power supply fault diagnosis simple method for testing bacterial resistance, comprising the following steps:
Direct-current switch power supply to be measured is accessed easily-testing instrument, the input terminal of direct-current switch power supply to be tested and one by step 1
Output wiring terminal is electrically connected, the output end of direct-current switch power supply to be tested is electrically connected with a pair of of lead-in clamp.Pay attention to input
End and output end should not be reversed, and plug in plug after connecting.
Step 2, the watt level according to direct-current switch power supply, the selection inspection of the first detection button switch K1 of closure or first
It surveys button switch K 1 to be closed together with the second detection button switch K2, the direct-current switch power supply of 0-80VA is only closed K1, is greater than
The direct-current switch power supply K1 and K2 of 80VA is closed.
Step 3, the switch for opening direct-current switch power supply to be measured, the first detection indicator light L1 of observation or the second detection indicator light
The state of L2 carries out direct current and opens according to the state of the different conditions of input circuit indicator light L1 or L2 and output circuit light bulb L3
The judgement of the fault point in powered-down source.
Further, the breakdown judge process of direct-current switch power supply is as follows:
1. detecting indicator light L1 or L2 lamp bright primary (about 1 second, i.e. the charging time of capacitor C4 in Fig. 1) after being powered i.e.
Go out, light bulb L3 long it is bright, direct-current switch power supply has normal output, working properly, fault-free.
2. L1 or L2 lamp length is bright after being powered, illustrate that input rectifying filter circuit or switching inverter circuit have short-circuit conditions, shape
At loop current, rectification and inversion this two parts circuit need to be checked.
3. L1 or L2 lamp does not work after being powered, illustrate that input rectifying filter circuit is opened a way, direct-current switch power supply does not work, first examines
Fuse, fuse no problem are looked into, then looks into the voltage whether high-voltage filtering capacitor has 310V or so；If nothing, check that error is adopted
Sample amplifies feed circuit and whether filter circuit is normal, if there is voltage, checks whether the chip of Switching Power Supply has operating voltage
And output voltage.
4. L1 or L2 lamp flashes after being powered, illustrate that output rectifier and filter is protected, capacitor C4 carries out repeating to fill in Fig. 1
Electricity, the silicon-controlled breakdown protection of SCR check output rectifier and filter.
5. L1 or L2 lamp is dimmed after being powered, illustrate that the rectifier bridge of input rectifying filter circuit is bad, forms halfwave rectifier, at this time
The voltage of rectifier bridge is that U1/2, L1 and L2 are half voltage power supply, so L1 or L2 are dimmed, need to check the diode of rectifier bridge.
Claims (5)
1. a kind of direct-current switch power supply fault diagnosis easily-testing instrument characterized by comprising test circuit, load circuit, institute
The test circuit stated includes: to switch the first series arm constituted by the first detection indicator light and the first detection button, by second
The second series arm that indicator light and the second detection button switch are constituted is detected, the first series arm and the second series arm are in parallel
Later, in parallel with A.C. voltmeter through alternating current ammeter, one end of the test circuit is through attaching plug access 220V exchange
Electricity, the other end for testing circuit form a pair of of output wiring terminal；
The load circuit includes D.C. voltmeter and light bulb in parallel, and load circuit forms a pair of of lead-in clamp.
2. a kind of direct-current switch power supply fault diagnosis easily-testing instrument according to claim 1, which is characterized in that test electricity
Electronic component parameter used by the part of road is as follows: first detection indicator light and second detection indicator light be 220V/20W, first
Detection button switch and the second detection button switch are that common detection button switchs, alternating current ammeter 0-5A, alternating voltage
Table is 0-300VAC；
Electronic component parameter used by load circuit part is as follows: D.C. voltmeter 0-50V, light bulb 36V/20W.
3. a kind of direct-current switch power supply fault diagnosis simple method for testing bacterial resistance, which comprises the following steps:
Direct-current switch power supply to be measured is accessed easily-testing instrument by step 1, and the input terminal and a pair of direct-current switch power supply to be tested are defeated
Binding post is electrically connected out, and the output end of direct-current switch power supply to be tested is electrically connected with a pair of of lead-in clamp, plugs electricity after connecting
Source plug；
Step 2, the watt level according to direct-current switch power supply, selection the first detection button of closure switch or the first detection button
Switch is closed together with the second detection button switch；
Step 3, the switch for opening direct-current switch power supply to be measured detect indicator light according to input circuit first or the second detection indicate
The different conditions of lamp and the state of output circuit light bulb, carry out the judgement of the fault point of direct-current switch power supply.
4. a kind of direct-current switch power supply fault diagnosis simple method for testing bacterial resistance according to claim 3, which is characterized in that step
The fault judgment method that the trouble spot judging of direct-current switch power supply is carried out described in 3 is as follows:
1. after being powered the first detection indicator light or the second detection indicator light it is bright it is primary go out, output circuit light bulb length it is bright, then judge
Direct-current switch power supply normally exports, works normally, fault-free；
2. the first detection indicator light or the second detection indicator light length are bright after being powered, illustrate input rectifying filter circuit or switch inversion
Circuit has short-circuit conditions, checks this two parts circuit；
3. the first detection indicator light or the second detection indicator light do not work after being powered, illustrate that input rectifying filter circuit is opened a way, direct current
Switching Power Supply does not work, and first checks fuse, fuse no problem, then looks into the electricity whether high-voltage filtering capacitor has 310V or so
Pressure；If nothing, check whether error amplifier feed circuit and filter circuit are normal, if there is voltage, checks Switching Power Supply
Chip whether have operating voltage and output voltage；
4. the first detection indicator light or the second detection indicator light flashing, illustrate that output rectifier and filter is protected, check after being powered
Output rectifier and filter；
5. the first detection indicator light or the second detection indicator light are dimmed after being powered, illustrate the rectifier bridge of input rectifying filter circuit
It is bad, check the diode of rectifier bridge.
5. a kind of direct-current switch power supply fault diagnosis simple method for testing bacterial resistance according to claim 3 or 4, which is characterized in that
The specific method of selection occlusion detection button switch described in step 2 is: the direct-current switch power supply of 0-80VA is only closed the first inspection
Button switch is surveyed, the first detection button of the direct-current switch power supply switch and the second detection button switch greater than 80VA are all closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910475905.7A CN110146829A (en) | 2019-06-03 | 2019-06-03 | A kind of direct-current switch power supply fault diagnosis easily-testing instrument and test method |
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| CN201910475905.7A CN110146829A (en) | 2019-06-03 | 2019-06-03 | A kind of direct-current switch power supply fault diagnosis easily-testing instrument and test method |
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| CN110146829A true CN110146829A (en) | 2019-08-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797836A (en) * | 2019-11-28 | 2020-02-14 | 北京Abb电气传动系统有限公司 | Circuit for switching power supply in motor driver, operation method and motor driving circuit system |
| CN112798976A (en) * | 2020-12-14 | 2021-05-14 | 航天科工防御技术研究试验中心 | Power failure judgment method, equipment, electronic equipment and storage medium |
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| CN112798976A (en) * | 2020-12-14 | 2021-05-14 | 航天科工防御技术研究试验中心 | Power failure judgment method, equipment, electronic equipment and storage medium |
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