CN203325697U - Small electromagnetic voltage transformer - Google Patents
Small electromagnetic voltage transformer Download PDFInfo
- Publication number
- CN203325697U CN203325697U CN2013204566353U CN201320456635U CN203325697U CN 203325697 U CN203325697 U CN 203325697U CN 2013204566353 U CN2013204566353 U CN 2013204566353U CN 201320456635 U CN201320456635 U CN 201320456635U CN 203325697 U CN203325697 U CN 203325697U
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- China
- Prior art keywords
- voltage transformer
- magnetic core
- small electromagnetic
- small
- primary coil
- 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 - Lifetime
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Abstract
Provided is a small electromagnetic voltage transformer. The small electromagnetic voltage transformer comprises a magnetic core installed in an insulating shell, a primary coil and a secondary coil, wherein the primary coil and the secondary coil winds around the magnetic core. The small electromagnetic voltage transformer is characterized in that Mylar tape adheres to the outer surface of the magnetic core, and a polyester film is arranged inside the magnetic core in a sleeved mode. The small electromagnetic voltage transformer has the advantages that the structure is simple, reinforcement processing is carried out simply on the original basis, the cost is saved, and the performance of the voltage transformer is improved.
Description
Technical field
The utility model belongs to the voltage transformer field, relates to a kind of small-sized electromagnetic type voltage transformer, is specially adapted to the ac voltage signal of high level accurately is transformed to low level ac voltage signal, to be applicable to the devices such as electronic circuit of microprocessor.
Background technology
Current voltage transformer is all generally to be used in the outdoor high-voltage occasion, is rarely used in the less occasion in device inner space.Voltage transformer volume of the present utility model is little, lightweight, but the weakness of this small-size voltage transformer is that barotolerance is all relative poor with stability, therefore how to solve this 2 problems, is the thing that those skilled in the art worry always.
The utility model content
The purpose of this utility model is to solve the technical problem of small-size voltage transformer barotolerance and poor stability, has designed a kind of small-sized electromagnetic type voltage transformer, by the improvement to magnetic core and coil, reaches the purpose that improves high voltage performance and stability.
The technical solution adopted in the utility model is, a kind of small-sized electromagnetic type voltage transformer, comprise the magnetic core that is arranged on insulation crust inside, the primary coil be wound around and secondary coil on magnetic core, key is: be stained with respectively agate at the outer surface of magnetic core and draw adhesive tape, and at the inside of magnetic core chuck polyester film.
Isolation strip distance between described primary coil and secondary coil is greater than 2mm.
The enamelled wire diameter of described primary coil and secondary coil is 0.07mm.
Key of the present utility model is magnetic core has been carried out to intensive treatment, can be so that its barotolerance and stability improve greatly.The beneficial effects of the utility model are simple in structure, simply realize on the original basis intensive treatment, cost-saving, improve the self performance of voltage transformer.
The accompanying drawing explanation
Fig. 1 is voltage transformer internal structure schematic diagram of the present utility model.
1 represents primary coil, and 2 represent secondary coil, and 3 represent insulation crust.
Embodiment
A kind of small-sized electromagnetic type voltage transformer, comprise the magnetic core that is arranged on insulation crust 3 inside, the primary coil 1 be wound around and secondary coil 2 on magnetic core, key is: be stained with respectively agate at the outer surface of magnetic core and draw adhesive tape, and at the inside of magnetic core chuck polyester film.
Isolation strip distance between described primary coil 1 and secondary coil 2 is greater than 2mm.
The enamelled wire diameter of described primary coil 1 and secondary coil 2 is 0.07mm.
By upper cover, with lower cover, eye-splice is connected insulation crust 3.
In the specific implementation, the electromagnetic type voltage transformer is for the measurement mechanism of high-accuracy voltage, power, electric energy for the utility model.Volume is little, and precision is high; The direct welded and installed of printed substrate, easy to use, good looking appearance; Totally-enclosed, machinery and environmental resistance are good, and voltage isolation capabilities is strong, safe and reliable.
Current mode voltage transformer input voltage in use can not directly put on armature winding, need seal in current-limiting resistance R voltage signal is converted to mA level current signal, general use state is 2mA/2mA, the mA level signal of secondary output is through external amplifier I/V translation circuit, convert voltage signal to, instrument transformer is operated in the approximate zero load condition, wide dynamic range under this kind of application mode again, precision is high, and the linearity is good.A current mode voltage transformer secondary side sampling resistor also can be directly in parallel is to obtain required magnitude of voltage.
Claims (3)
1. a small-sized electromagnetic type voltage transformer, comprise and be arranged on insulation crust (3) inner magnetic core, the primary coil (1) be wound around and secondary coil (2) on magnetic core, it is characterized in that: be stained with respectively agate at the outer surface of magnetic core and draw adhesive tape, and at the inside of magnetic core chuck polyester film.
2. a kind of small-sized electromagnetic type voltage transformer according to claim 1 is characterized in that: the isolation strip distance between described primary coil (1) and secondary coil (2) is greater than 2mm.
3. a kind of small-sized electromagnetic type voltage transformer according to claim 1, it is characterized in that: the enamelled wire diameter of described primary coil (1) and secondary coil (2) is 0.07mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204566353U CN203325697U (en) | 2013-07-30 | 2013-07-30 | Small electromagnetic voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204566353U CN203325697U (en) | 2013-07-30 | 2013-07-30 | Small electromagnetic voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203325697U true CN203325697U (en) | 2013-12-04 |
Family
ID=49665010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204566353U Expired - Lifetime CN203325697U (en) | 2013-07-30 | 2013-07-30 | Small electromagnetic voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203325697U (en) |
-
2013
- 2013-07-30 CN CN2013204566353U patent/CN203325697U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |
|
| CX01 | Expiry of patent term |