CN209132363U - Switch transformer winding relation test platform structure - Google Patents
Switch transformer winding relation test platform structure Download PDFInfo
- Publication number
- CN209132363U CN209132363U CN201821685576.6U CN201821685576U CN209132363U CN 209132363 U CN209132363 U CN 209132363U CN 201821685576 U CN201821685576 U CN 201821685576U CN 209132363 U CN209132363 U CN 209132363U
- Authority
- CN
- China
- Prior art keywords
- transformer
- switch transformer
- winding
- test platform
- oscillograph
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a kind of switch transformer winding relation test platform structure, the structure is made of the circuit board of generation clock, 4 oscillograph terminals, 4 transformer connecting lead wires, LED charactrons, battery pack and five part of shell, two section lithium battery series-feds, battery pack and circuit board are installed on enclosure interior, and housing top surface front medial location is equipped with the LED charactrons of display inductance；The upper and lower two sides of charactron point arrange two rows of 4 oscillograph terminals and 4 transformer connecting lead wires, and terminals and connecting lead wire are in upper and lower corresponding relationship；Tested transformer is placed in the back platform of housing top surface.The usefulness of the utility model is to connect oscillograph and tested switch transformer in a manner of most convenient and fast, while can indicate that the inductance of switch transformer main winding, compact is easy to carry without external signal or power supply.
Description
Technical field
The content that the utility model switch transformer winding relation test platform structure is related to belongs to electronic technology field, can
Quickly and easily measure phase relation and turn ratio relationship etc. between switch transformer winding.
Background technique
Switch transformer is a core component in Switching Power Supply, often determines circuit according to the operating condition of transformer
Parameter.Simultaneously as the difference for the difference and switch transformer structure being routed in switching power circuit design, is different from power frequency and becomes
Depressor has unified line of specifications like that, custom switches transformer is typically necessary per a Switching Power Supply, especially for anti-
Exciting-simulator system switch transformer not only will have suitable winding turns than relationship, also there is suitable phase relation, before power supply assembly
These relationships that preferably can then verify that switch transformer, so as not to because caused by transformer device structure mistake power work it is abnormal.
The measurement of Same Name of Ends relationship is also known as typically for the measurement of transformer winding phase relation, measurement method is basic
Using Instantaneous Method: DC voltage is for example added to a winding of transformer, with dual trace oscilloscope observation transformer another around
Impulse waveform phase of the group in power supply switching moment, if the moment oscillograph instruction positive polarity voltage shutdown transient that is powered is cathode
Property voltage, then illustrate that oscilloprobe institute connecting pin and positive pole institute connecting pin are Same Name of Ends, it is on the contrary then be different name end；Also have
Transformer ratio is connected to on winding with direct current millivoltmeter or DC milliammeter, if powering on the pointer of moment table to positive direction
The pointer of deflection, moment table of cutting off the power is deflected to opposite direction, then connects the terminal of anode and connect the end of ammeter positive terminal
Son be Same Name of Ends, on the contrary it is then be different name end.This transient measurement method is inconvenient to observe, and also will cause switch transformer winding current
It is excessive.
The measurement of transformer winding turn ratio is substantially according to voltage than determining: applying on a winding of transformer and hands over
Galvanic electricity pressure, measurement compare the induced voltage of winding, and the two voltage is than being exactly their turn ratio.If known one of winding
The number of turns, so that it may calculate another umber of turn.According to this principle, there is dedicated digital transformer circle on the market
Number is sold than tester.Since switching mode power supply transformer works in high frequency environment, the voltage applied here should be that high frequency is handed over
Galvanic electricity pressure, mostly above or below 100kHz.
In the case where no Special testing device, laboratory back warp is input to switch transformer frequently with sine signal source
Main winding, signal frequency adjusts to 50~100kHz, and signal amplitude is controlled to 1~5V, is then measured and is led with dual trace oscilloscope
Winding and the voltage waveform for comparing winding, it can be seen that their phase relation and amplitude relation.Though this measurement method
Right principle is simple, but test process wants the frequency and amplitude in adjustment signal source every time, and the lead end of switch transformer is shorter, together
When connecting signal source and when oscillograph it is crowded, if adjunction test lead increases welding workload again, test process compares
Loaded down with trivial details, connecting line is mixed and disorderly.If there is dedicated test device can facilitate many, the utility model is exactly needed in view of such measurement
It wants, designs a test platform, measurement is completed with simplest operating process and is needed.
Summary of the invention
The utility model switch transformer winding relation test platform structure is between switch transformer winding in Switching Power Supply
The simple measurement of relationship has the feature that from technological layer
Switch transformer winding relation test platform by generation clock circuit board, 4 oscillograph terminals, 4 transformations
Device connecting lead wire, LED charactrons, battery pack and five part of shell composition, battery pack and circuit board are installed on enclosure interior, LED
Charactron is installed on circuit board and is pierced by housing top surface, is located at shell anteriomedial；4 oscillograph terminals and 4 transformations
Device connecting lead wire is allocated as two rows of upper and lower two sides for being respectively in charactron, is in upper and lower corresponding relationship, as shown in Fig. 3；Housing top surface
Rear portion reserve the platform for placing tested transformer.
4 oscillograph terminals of the switch transformer winding relation test platform structure use metal column, 4 transformers
Connecting lead wire uses 1P Du Pont line.
Caused by switch transformer winding relation test platform structure the utility model has the advantages that
Without external signal or power supply, oscillograph and tested switch transformer are connected in a manner of most convenient and fast, while may be used also
To indicate the inductance of switch transformer main winding, meet simple and quick measurement request, compact is easy to carry.
The major function of switch transformer winding relation test platform is measurement Motor Winding Same Name of Ends relationship and turn ratio relationship, is shown
The inductance for showing main winding is its subsidiary function.The inductance L of switch transformer main winding is also an important parameter.It surveys
Since being applied with pumping signal during amount, voltage and current data, the relationship and the winding of voltage and its electric current must be will form
The wired sexual intercourse of inductance L, it is easy to obtain the value of its inductance L.
It is accustomed in conjunction with the placement of measuring instrument, oscilloscope measurement end is arranged in the front of test countertop, i.e. charactron
Front, the connecting line of tested transformer is arranged in charactron rear portion, be arranged in it is one horizontally-arranged, when this layout can be to avoid line
It intersects, the registration of charactron is unobstructed.Oscilloscope measurement end is actually the elongated end of transformer connecting line, so
Corresponding relationship up and down is arranged in structure.Consideration facilitates the placement of transformer, and the rear side of testboard shell is arranged in power switch
Face reserves a plane for testboard rear portion.
LED charactrons also and the function of power supply indicator, turn on the power switch, LED charactrons, that is, bright.
Detailed description of the invention
Attached drawing 1 is the top-level view of switch transformer winding relation test platform structure.
Component 1 is testboard shell in figure, and 2 be oscilloprobe connecting pin, and paired terminals are decorated with inductor symbol, and 3 be aobvious
Show the charactron of inductance, 4 be the connecting line of four tested transformers, and paired terminals are decorated with inductor symbol, and 5 be tested transformer
Placed mesa, 6 be the power switch of testboard.
Attached drawing 2 is the interior layout figure of switch transformer winding relation test platform structure.
1 is testboard shell in figure, and 6 be the power switch of testboard, and 7 be circuit board, and 8 be No. 5 lithium batteries of two sections.
Attached drawing 3 is two groups of voltage curves of oscilloscope display in actual measurement.
Specific embodiment
Below with reference to the attached drawing of the utility model, the implementation of the utility model is described further.
Measured switch transformer small volume, thus the area of entire test platform can accordingly be made to it is small by one
A bit.The topside area of the utility model switch transformer winding relation test platform structure is 80 × 120mm, and thickness is can put
Entering No. 5 batteries is advisable.
In order to improve globality, control circuit, measuring circuit, charactron, oscillograph connecting pin, transformer connecting line etc. are all
It is placed on same circuit board, lies against in shell, battery is individually placed loaded on battery case.Oscillograph connecting pin and transformer connect
Wiring arrangement is in upper and lower corresponding relationship.Housing top surface need to indicate main winding and compare the position of winding.
The tri- Digital sum pipe of LED of 0.36 cun of 23*14 is used in the utility model, visual preferable, the measurement model of inductance
It encloses for 0.1~5mH.
In use, the winding distribution for being measured transformer should be it is specific in advance, main winding connecting line is connected to transformation
The main winding of device, another winding connecting line are connected to the comparison winding of transformer, and connect two oscilloprobes, open power supply
Switch.Fig. 3 is the wavy curve that actual measurement is shown, curve 1 is the voltage waveform of main winding, and curve 2 is to compare winding
Voltage waveform, two groups of wavy curves of display same phase each other illustrates that the corresponding line ends of two probes of dual trace oscilloscope are same
Name relationship.If two groups of wavy curves reverse phase each other of display, illustrate that the corresponding line ends of two probes of dual trace oscilloscope are
Synonymy.
Switch transformer input signal in switching pulse state, measurement that works itself can be impulse wave, be also possible to
Sine wave.It is motivated if it is square-wave voltage, there are spine voltages in the voltage waveform measured, but do not influence measurement effect
Fruit；If the spine voltage in Fig. 3 would not occur using sinusoidal signal, but the difficulty of control circuit output sinusoidal signal compared with
Greatly.
The utility model switch transformer winding relation test platform should be used cooperatively with dual trace oscilloscope.
Claims (2)
1. switch transformer winding relation test platform structure, it is characterized in that: being connect by the circuit board of generation clock, 4 oscillographs
Line end, 4 transformer connecting lead wires, LED charactrons, battery pack and five part of shell composition, battery pack and circuit board are installed on
Enclosure interior, LED charactrons are installed on circuit board and are pierced by housing top surface, are located at shell anteriomedial；4 oscillograph wiring
End and 4 transformer connecting lead wires are allocated as two rows of upper and lower two sides for being respectively in charactron, are in upper and lower corresponding relationship；Housing top surface
Rear portion reserve the platform for placing tested transformer.
2. switch transformer winding relation test platform structure according to claim 1, it is characterized in that: 4 oscillograph wiring
End uses metal column, and 4 transformer connecting lead wires use 1P Du Pont line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821685576.6U CN209132363U (en) | 2018-09-29 | 2018-09-29 | Switch transformer winding relation test platform structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821685576.6U CN209132363U (en) | 2018-09-29 | 2018-09-29 | Switch transformer winding relation test platform structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209132363U true CN209132363U (en) | 2019-07-19 |
Family
ID=67232000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821685576.6U Expired - Fee Related CN209132363U (en) | 2018-09-29 | 2018-09-29 | Switch transformer winding relation test platform structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209132363U (en) |
-
2018
- 2018-09-29 CN CN201821685576.6U patent/CN209132363U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190719 Termination date: 20200929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |