CN107271837A - A kind of coil turn-to-turn short circuit test device - Google Patents
A kind of coil turn-to-turn short circuit test device Download PDFInfo
- Publication number
- CN107271837A CN107271837A CN201710682738.4A CN201710682738A CN107271837A CN 107271837 A CN107271837 A CN 107271837A CN 201710682738 A CN201710682738 A CN 201710682738A CN 107271837 A CN107271837 A CN 107271837A
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- CN
- China
- Prior art keywords
- turn
- coil
- short circuit
- test device
- pin
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a kind of coil turn-to-turn short circuit test device, including base chip and voltmeter when transformer, rectifier circuit, voltage stabilizing chip, 555, if larger by the inductance value of test coil, when coil windings are without turn-to-turn short circuit, the registration of voltmeter is up to 30V；When there is turn-to-turn short circuit by test coil, the magnitude of voltage at the two ends of coil significantly declines, at this moment the registration of voltmeter can be greatly reduced, it whether there is turn-to-turn short circuit so as to accurate detection coil, it is ensured that the qualification rate of coil, circuit is simple, easily realize, it is with low cost, it is easy to promote the use of, has a good application prospect.
Description
Technical field
The present invention relates to electronic measuring technology field, and in particular to a kind of coil turn-to-turn short circuit test device.
Background technology
During the coil of the electrical equipments such as transformer is made, it is necessary to be to coil turn-to-turn after coil completes
No short circuit is tested, and is defective work if occurring short circuit.At present, on the market for coil turn-to-turn short circuit test device, electricity
Road is complicated, and cost of manufacture is high, and promoting the use of for manufacturer is made without using small coil.
The content of the invention
The purpose of the present invention is to overcome existing for coil turn-to-turn short circuit test device, and circuit is complicated, and cost of manufacture is high,
The problem of promoting the use of of manufacturer is made without using small coil.The coil turn-to-turn short circuit test device of the present invention,
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of coil turn-to-turn short circuit test device, it is characterised in that：Including transformer T1, rectifier circuit VD1, voltage stabilizing chip U1
With base chip U2 when 555, live wire, the zero line of the both ends of the transformer T1 primary sides respectively with civil power are connected, described to become
The both ends of depressor T1 primary sides are connected with rectifier circuit VD1 two inputs respectively, the rectifier circuit VD1's
Positive output end is connected with voltage stabilizing chip U1 input, and the negative output terminal of the rectifier circuit VD1 is connected to the ground, described
Base chip U2 the 4th and the 8th pin is connected when voltage stabilizing chip U1 output end one end respectively with slide rheostat RP1,555
Connect, the earth terminal of the voltage stabilizing chip U1 is connected to the ground, the other end of the slide rheostat RP1 by resistance R1 respectively with
Base chip U2 the 7th pin is connected when resistance R2 one end, 555, the other end of the resistance R2 respectively with electric capacity C1 one
When end, 555 base chip U2 second and the 6th pin be connected, the other end of the electric capacity C1 is connected to the ground, when described 555
Positive pole of base chip U2 the 7th pin also with diode D1 is connected, the negative pole of the diode D1 and base chip U2 when 555
Second pin be connected, base chip U2 the first pin is connected to the ground when described 555, the of base chip U2 when described 555
Five pins are connected to the ground by electric capacity C6, when described 555 base chip U2 the 3rd pin by electric capacity C2 and voltmeter just
Pole is connected, and the negative pole of the voltmeter is connected to the ground, and is parallel between the positive and negative electrode of the voltmeter by test coil L1.
A kind of foregoing coil turn-to-turn short circuit test device, it is characterised in that：The rectifier circuit VD1's is positive and negative defeated
Go out parallel filtering electric capacity C3 between end.
A kind of foregoing coil turn-to-turn short circuit test device, it is characterised in that：The output end of the voltage stabilizing chip U1 is also led to
Filter capacitor C4 is crossed to be connected to the ground.
A kind of foregoing coil turn-to-turn short circuit test device, it is characterised in that：The one end of the transformer T1 primary sides
It is in series with fuse F1, switch S1, electric capacity C5.
A kind of foregoing coil turn-to-turn short circuit test device, it is characterised in that：The model L7805 of the voltage stabilizing chip U1
Voltage stabilizing chip.
A kind of foregoing coil turn-to-turn short circuit test device, it is characterised in that：The rectifier circuit VD1's is positive and negative defeated
The voltage gone out between end is 6-12V.
A kind of foregoing coil turn-to-turn short circuit test device, it is characterised in that：The rectifier circuit VD1's is positive and negative defeated
The voltage gone out between end is 9V.
The beneficial effects of the invention are as follows：The coil turn-to-turn short circuit test device of the present invention, including transformer, rectifier bridge electricity
Base chip and voltmeter when road, voltage stabilizing chip, 555, if larger by the inductance value of test coil, when coil windings are without turn-to-turn short circuit,
The registration of voltmeter is up to 30V；When there is turn-to-turn short circuit by test coil, the magnitude of voltage at the two ends of coil significantly declines, this
When voltmeter registration can greatly reduce, so as to accurate detection coil whether there is turn-to-turn short circuit, it is ensured that the conjunction of coil
Lattice rate, circuit is simple, easily realizes, with low cost, is easy to promote the use of, has a good application prospect.
Brief description of the drawings
Fig. 1 is the circuit diagram of the coil turn-to-turn short circuit test device of the present invention.
Embodiment
Below in conjunction with Figure of description, the present invention is further illustrated.
As shown in figure 1, the coil turn-to-turn short circuit test device of the present invention, including it is transformer T1, rectifier circuit VD1, steady
Base chip U2 when pressing chip U1 and 555, live wire, the zero line of the both ends of the transformer T1 primary sides respectively with civil power is connected
Connect, the both ends of the transformer T1 primary sides are connected with rectifier circuit VD1 two inputs respectively, the rectifier bridge
Circuit VD1 positive output end is connected with voltage stabilizing chip U1 input, negative output terminal and the ground phase of the rectifier circuit VD1
Connection, the 4th and the of base chip U2 when the output end of voltage stabilizing chip U1 one end respectively with slide rheostat RP1,555
Eight pins are connected, and the earth terminal of the voltage stabilizing chip U1 is connected to the ground, and the other end of the slide rheostat RP1 passes through electricity
Base chip U2 the 7th pin is connected when resistance R1 one end respectively with resistance R2,555, the other end of the resistance R2 respectively with
When electric capacity C1 one end, 555 base chip U2 second and the 6th pin be connected, the other end of the electric capacity C1 is connected to the ground
Connect, positive pole of base chip U2 the 7th pin also with diode D1 is connected when described 555, the negative pole of the diode D1 with
Base chip U2 second pin is connected when 555, and base chip U2 the first pin is connected to the ground when described 555, when described 555
Base chip U2 the 5th pin is connected to the ground by electric capacity C6, and base chip U2 the 3rd pin passes through electric capacity C2 when described 555
It is connected with the positive pole of voltmeter, the negative pole of the voltmeter is connected to the ground, is parallel between the positive and negative electrode of the voltmeter
By test coil L1.
It is preferred that, parallel filtering electric capacity C3 between the positive and negative output end of the rectifier circuit VD1, it is ensured that voltage it is steady
It is qualitative.
It is preferred that, the output end of the voltage stabilizing chip U1 is also connected to the ground by filter capacitor C4, is further ensured that electricity
The stability of pressure.
It is preferred that, the one end of the transformer T1 primary sides is in series with fuse F1, switch S1, electric capacity C5, fuse
F1 can prevent that transformer T1 electric current is excessive, burn out other electronic components of coil turn-to-turn short circuit test device, switch S1
It is capable of the normal supply of control voltage；Electric capacity C4 can filter out the clutter in civil power.
It is preferred that, the model L7805 voltage stabilizing chips of the voltage stabilizing chip U1, it is ensured that the stability of voltage output there is provided
Stable 5V DC voltages, to base chip U2 when 555.
It is preferred that, the voltage between the positive and negative output end of the rectifier circuit VD1 is 6-12V, preferably 9V.
The coil turn-to-turn short circuit test device of the present invention, the course of work is as follows：When there is no the external zero load by test coil, 555
When base chip U2 the stable output of the 3rd pin, the registration of voltmeter is about 1V；During test, constituted by test coil and electric capacity C2
Series circuit, adjusts slide rheostat RP1, when the frequency of output square-wave pulse is equal to by test coil and electric capacity C2 series circuits
During LC intrinsic frequencies, the registration of voltmeter is maximum, and when coil windings are without turn-to-turn short circuit, the registration of voltmeter is up to 30V；When tested
When coil has turn-to-turn short circuit, the magnitude of voltage at the two ends of coil significantly declines, and at this moment the registration of voltmeter can be greatly reduced, from
And accurately detection coil can whether there is turn-to-turn short circuit.
In summary, coil turn-to-turn short circuit test device of the invention, including transformer, rectifier circuit, voltage stabilizing chip,
Base chip and voltmeter when 555, if larger by the inductance value of test coil, when coil windings are without turn-to-turn short circuit, the registration of voltmeter
Up to 30V；When there is turn-to-turn short circuit by test coil, the magnitude of voltage at the two ends of coil significantly declines, and at this moment voltmeter shows
Number can be greatly reduced, and whether there is turn-to-turn short circuit so as to accurate detection coil, it is ensured that the qualification rate of coil, circuit letter
It is single, easily realize, it is with low cost, it is easy to promote the use of, has a good application prospect.
General principle, principal character and the advantage of the present invention has been shown and described above.It should be understood by those skilled in the art that,
The present invention is not limited to the above embodiments, merely illustrating the principles of the invention described in above-described embodiment and specification,
Without departing from the spirit and scope, various changes and modifications of the present invention are possible, and these changes and improvements all fall
Enter in scope of the claimed invention.The scope of the present invention is defined by the appended claims and its equivalents.
Claims (7)
1. a kind of coil turn-to-turn short circuit test device, it is characterised in that：Including transformer T1, rectifier circuit VD1, voltage stabilizing chip
Base chip U2 during U1 and 555, live wire, the zero line of the both ends of the transformer T1 primary sides respectively with civil power is connected, described
The both ends of transformer T1 primary sides are connected with rectifier circuit VD1 two inputs respectively, the rectifier circuit VD1
Positive output end be connected with voltage stabilizing chip U1 input, the negative output terminal of the rectifier circuit VD1 is connected to the ground, institute
Base chip U2 the 4th and the 8th pin phase when stating voltage stabilizing chip U1 output end one end respectively with slide rheostat RP1,555
Connection, the earth terminal of the voltage stabilizing chip U1 is connected to the ground, and the other end of the slide rheostat RP1 is distinguished by resistance R1
Base chip U2 the 7th pin is connected when one end with resistance R2,555, and the other end of the resistance R2 is respectively with electric capacity C1's
When one end, 555 base chip U2 second and the 6th pin be connected, the other end of the electric capacity C1 is connected to the ground, described 555
When base chip U2 positive pole of the 7th pin also with diode D1 be connected, the negative pole of the diode D1 and base chip when 555
U2 second pin is connected, and base chip U2 the first pin is connected to the ground when described 555, base chip U2 when described 555
5th pin is connected to the ground by electric capacity C6, and base chip U2 the 3rd pin passes through electric capacity C2 and voltmeter when described 555
Positive pole is connected, and the negative pole of the voltmeter is connected to the ground, and is parallel between the positive and negative electrode of the voltmeter by test coil
L1。
2. a kind of coil turn-to-turn short circuit test device according to claim 1, it is characterised in that：The rectifier circuit
Parallel filtering electric capacity C3 between VD1 positive and negative output end.
3. a kind of coil turn-to-turn short circuit test device according to claim 1, it is characterised in that：The voltage stabilizing chip U1's
Output end is also connected to the ground by filter capacitor C4.
4. a kind of coil turn-to-turn short circuit test device according to claim 1, it is characterised in that：The transformer T1 is primary
The one end of side is in series with fuse F1, switch S1, electric capacity C5.
5. a kind of coil turn-to-turn short circuit test device according to claim 1, it is characterised in that：The voltage stabilizing chip U1's
Model L7805 voltage stabilizing chips.
6. a kind of coil turn-to-turn short circuit test device according to claim 2, it is characterised in that：The rectifier circuit
Voltage between VD1 positive and negative output end is 6-12V.
7. a kind of coil turn-to-turn short circuit test device according to claim 6, it is characterised in that：The rectifier circuit
Voltage between VD1 positive and negative output end is 9V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710682738.4A CN107271837A (en) | 2017-08-10 | 2017-08-10 | A kind of coil turn-to-turn short circuit test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710682738.4A CN107271837A (en) | 2017-08-10 | 2017-08-10 | A kind of coil turn-to-turn short circuit test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107271837A true CN107271837A (en) | 2017-10-20 |
Family
ID=60079813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710682738.4A Withdrawn CN107271837A (en) | 2017-08-10 | 2017-08-10 | A kind of coil turn-to-turn short circuit test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107271837A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110940935A (en) * | 2019-12-13 | 2020-03-31 | 西安锐驰电器有限公司 | Transformer short circuit detection system and detection method |
-
2017
- 2017-08-10 CN CN201710682738.4A patent/CN107271837A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110940935A (en) * | 2019-12-13 | 2020-03-31 | 西安锐驰电器有限公司 | Transformer short circuit detection system and detection method |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171020 |
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| WW01 | Invention patent application withdrawn after publication |