CN203929946U - A kind of interconnecting cable induced field test device - Google Patents
A kind of interconnecting cable induced field test device Download PDFInfo
- Publication number
- CN203929946U CN203929946U CN201420358205.2U CN201420358205U CN203929946U CN 203929946 U CN203929946 U CN 203929946U CN 201420358205 U CN201420358205 U CN 201420358205U CN 203929946 U CN203929946 U CN 203929946U
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- loop
- pure resistance
- power amplifier
- audio frequency
- frequency power
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- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Electric Cable Installation (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses a kind of interconnecting cable induced field test device, comprise: 100W audio frequency power amplifier, signal generator, pure resistance, multiturn loop and oscillograph, the output terminal of described signal generator connects the input end of 100W audio frequency power amplifier, the output terminal of audio frequency power amplifier connects pure resistance, the other end end of pure resistance connects multiturn loop, the other end of multiturn loop connects audio frequency power amplifier and forms a loop, described oscillograph is in parallel with pure resistance for monitoring the voltage on pure resistance, every circle loop be shaped as rectangle, make the interconnecting cable of equipment under test and the long limit parallel laid of rectangular multiturn loop.The utility model is implemented convenient, simple to operate, with low cost, respond well.
Description
Technical field
The utility model relates to the device that a kind of electromagnetic compatibility test is used, and is specifically related to a kind of interconnecting cable induced field test device.
Background technology
In the airborne equipment EMC test of civil aircraft, all products all will carry out the test to the test of interconnecting cable induced field, in test, need to apply maximum in 350Hz-32kHz frequency range and need a field signal of 40A (on 3m line) producing, need one at least the audio frequency power amplifier of 800W just can meet testing requirements, but the audio frequency power amplifier that current domestic electromagnetic compatibility laboratory is used mostly only has 100W, the electric current of its generation only has 8A left and right, far can not meet testing requirements.
Summary of the invention
The purpose of this utility model is that the low-power audio power amplifier that proposes a kind of 100W of use is realized the interconnecting cable induced field test device to equipment under test, and this device utilizes miniwatt power amplifier to the test of interconnecting cable induced field, can meet testing requirements.
Goal of the invention of the present utility model is achieved by the following technical solution.
A kind of interconnecting cable induced field test device, comprise: 100W audio frequency power amplifier, signal generator, pure resistance, multiturn loop and oscillograph, the output terminal of described signal generator connects the input end of 100W audio frequency power amplifier, the output terminal of 100W audio frequency power amplifier connects pure resistance, the other end end of pure resistance connects multiturn loop, the other end of multiturn loop connects 100W audio frequency power amplifier and forms a loop, described oscillograph is in parallel with pure resistance for monitoring the voltage on pure resistance, every circle loop of multiturn loop be shaped as rectangle, make the interconnecting cable of equipment under test and the long limit parallel laid of rectangular multiturn loop.
Described pure resistance must can bear the power of 100W, and can make the electric current in circuit reach the required requirement of test.
Described pure resistance is 0.5 ohm of pure resistance.
The number of turn of described multiturn loop is 8 circles, and every circle length is 8m, the length × wide=3m × 1m of every circle loop.
Described wire is selected heavy gauge wire, to lower impedance loop.
The beneficial effects of the utility model are: utilize the method around circle, wire is formed to loop by identical direction around 8 circles, as long as electric current reaches 5A in circuit, total current just can reach 40A, thereby meets the requirement of miniwatt power amplifier to the test of interconnecting cable induced field.This device is implemented convenient, simple to operate, with low cost, respond well.
Brief description of the drawings
Fig. 1 is the schematic diagram of a kind of interconnecting cable induced field test device of the present utility model.
Embodiment
Below in conjunction with accompanying drawing 1, the utility model is described in further detail.
Utilize miniwatt power amplifier to realize the device to the test of interconnecting cable induced field, 100W audio frequency power amplifier 2, signal generator 1, pure resistance 4, multiturn loop 3 and oscillograph 5, concrete Connection Step is as follows:
(1) connect signal generator 1 and 100W audio frequency power amplifier 2: the output terminal of signal generator 1 is connected the input end of 100W audio frequency power amplifier 2;
(2) connect 100W audio frequency power amplifier 2 and pure resistance 4 and long lead: an output terminal of 100W audio frequency power amplifier 2 is connected one end of pure resistance 4, the other end of pure resistance 4 connects long lead, the other end of long lead connects the other end of 100W audio frequency power amplifier 2, thereby forms a loop.
(3) long lead pitch of the laps: long lead is coiled into 8 circles, and every circle length is 8m, is converted into the rectangle of 3m × 1m.
(4) long lead is selected: long lead should select a little thick any, to lower impedance loop.
(5) resistance value is selected: also can select the pure resistance 4 of other resistance, but all must be able to bear the power of 100W, and can make the electric current in circuit reach requirement.
(5) opening signal generator 1 and 100W audio frequency power amplifier 2, set the frequency needing, adjust amplitude output signal, on pure resistance 4, use oscillograph 5 monitoring voltages, when voltage is 2.5V, the electric current in single-turn circular coil is 5A, and the electric current in 8 circle coils reaches 40A, reaches testing requirements.
Carry out the induced field test to interconnecting cable for certain civil aviaton's extension set product, cannot meet test by 100W audio frequency power amplifier conventional method, the step of solution is as follows:
(1) press Fig. 1 connection device;
(2) make the long limit parallel laid of interconnecting cable and the rectangular 8 circle coils of equipment under test;
(3) opening signal generator 1 and 100W audio frequency power amplifier 2, set the frequency needing, adjust amplitude output signal, on pure resistance 4, use oscillograph 5 monitoring voltages, when voltage is 2.5V, the electric current in single-turn circular coil is 5A, and the electric current in 8 circle coils reaches 40A, reaches testing requirements.
Claims (5)
1. an interconnecting cable induced field test device, comprise: 100W audio frequency power amplifier (2), signal generator (1), pure resistance (4), multiturn loop (3) and oscillograph (5), it is characterized in that: the output terminal of described signal generator (1) connects the input end of 100W audio frequency power amplifier (2), the output terminal of audio frequency power amplifier connects pure resistance (4), the other end end of pure resistance (4) connects multiturn loop (3), the other end of multiturn loop (3) connects 100W audio frequency power amplifier (2) and forms a loop, described oscillograph (5) is in parallel with pure resistance (4) is used for monitoring the voltage on pure resistance (4), every circle loop of multiturn loop (3) be shaped as rectangle, the long limit of the interconnecting cable of equipment under test and rectangular multiturn loop (3) be arranged in parallel.
2. a kind of interconnecting cable induced field test device according to claim 1, is characterized in that: described pure resistance (4) is selected to bear the pure resistance of 100W power, and can make the electric current in circuit reach the required requirement of test.
3. a kind of interconnecting cable induced field test device according to claim 2, is characterized in that: described pure resistance (4) is 0.5 ohm of pure resistance.
4. a kind of interconnecting cable induced field test device according to claim 1, is characterized in that: the number of turn of described multiturn loop (3) is 8 circles, and every circle length is 8m the length × wide=3m × 1m of every circle loop.
5. a kind of interconnecting cable induced field test device according to claim 4, is characterized in that: described wire selects to lower the heavy gauge wire of impedance loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420358205.2U CN203929946U (en) | 2014-06-30 | 2014-06-30 | A kind of interconnecting cable induced field test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420358205.2U CN203929946U (en) | 2014-06-30 | 2014-06-30 | A kind of interconnecting cable induced field test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203929946U true CN203929946U (en) | 2014-11-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420358205.2U Expired - Lifetime CN203929946U (en) | 2014-06-30 | 2014-06-30 | A kind of interconnecting cable induced field test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203929946U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954620A (en) * | 2016-05-25 | 2016-09-21 | 李爱夏 | Power fault diagnosis system and method |
| CN108205117A (en) * | 2017-12-20 | 2018-06-26 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of Magnetic susceptibility test device for meeting DO-160G standards |
-
2014
- 2014-06-30 CN CN201420358205.2U patent/CN203929946U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954620A (en) * | 2016-05-25 | 2016-09-21 | 李爱夏 | Power fault diagnosis system and method |
| CN105954620B (en) * | 2016-05-25 | 2018-09-07 | 山东九驭信息科技有限公司 | A kind of power fault detection system |
| CN108205117A (en) * | 2017-12-20 | 2018-06-26 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of Magnetic susceptibility test device for meeting DO-160G standards |
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