Audio self-coupling output transformer applied in electric vibration experiment

A technology for output transformers and test systems, applied in transformers, fixed transformers, transformers/inductor coils/windings/connections, etc., can solve problems such as difficulty in reducing leakage inductance, large volume, thick wires, etc., to meet the requirements of driving voltage, The effect of wide operating frequency range and increased surface area

Active Publication Date: 2009-03-11
SUZHOU SUSHI TESTING INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the use of an output transformer saves a lot of cost compared to the application of two sets of power amplifiers in series, the output transformer required by this capacity is still large in size and high in cost. Difficulty with leakage inductance

Method used

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  • Audio self-coupling output transformer applied in electric vibration experiment
  • Audio self-coupling output transformer applied in electric vibration experiment
  • Audio self-coupling output transformer applied in electric vibration experiment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: An audio frequency autotransformer applied to an electrodynamic vibration test system

[0040] Such as Figure 5 As shown, it is mainly composed of coil winding 8 and iron core 9, wherein iron core 9 has an iron core winding post 10, and coil winding 8 is composed of one insulated wire, or two insulated wires connected in parallel.

[0041] Coil winding 8 as figure 2 As shown, it consists of a common winding 5 and a series winding 6, one of the two ends of the common winding 5 is used as the first lead end 1, the other end is used as the second lead end 2, and one of the two ends of the series winding 6 is used as the third lead end 3 , and the other end is used as the fourth lead terminal 4. Winding structure such as image 3 As shown, taking the central axis of the winding post 10 as the reference, the series winding 6 is wound and distributed in the first, third, and fifth odd-numbered layers from the inside to the outside of the winding post 10 of ...

Embodiment 2

[0044] Embodiment 2: An audio frequency autotransformer output transformer applied to an electrodynamic vibration test system

[0045] Such as Figure 8 As shown, one of the two ends of the common winding 5 is used as the first lead end 1, and the other end is used as the second lead end 2, and one end of the two ends of the series winding 6 is used as the third lead end 3, and the other end is used as the fourth lead end 4 . The winding structure is based on the central axis of the winding post 10, and the common winding 5 is wound and distributed on the first, third, and fifth odd-numbered layers in the radial direction of the winding post 10 of the iron core from the inside to the outside, where the first lead Terminal 1 is located at the end of the first layer, and the second lead terminal 2 is located at the end of the fifth layer. The series winding 6 is wound and distributed on the second and fourth even-numbered layers from the inside to the outside in the radial dir...

Embodiment 3

[0047] Embodiment 3: An audio frequency autotransformer output transformer applied to electrodynamic vibration test system

[0048] Such as Figure 9 As shown, one of the two ends of the common winding 5 is used as the first lead end 1, and the other end is used as the second lead end 2, and one end of the two ends of the series winding 6 is used as the third lead end 3, and the other end is used as the fourth lead end 4 . The winding structure is based on the central axis of the winding post 10, and the common winding 5 is wound on the first and third odd-numbered layers from the inside to the outside in the radial direction of the winding post 10 of the iron core, where the first lead end 1 is located at At the end of the first layer, the second lead terminal 2 is located at the end of the third layer. The series winding 6 is wound and distributed on the second even-numbered layer from the inside to the outside in the radial direction of the winding post 10 of the iron cor...

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Abstract

The invention relates to an audio-frequency self-coupling output transformer for an electric vibration experimental system, which mainly comprises a coil winding and an iron core, wherein the coil winding comprises a public winding and a series winding. The audio-frequency self-coupling output transformer is characterized in that a central axis of an iron core wrapping post is used as a standard, the series winding is wrapped and distributed on odd number layers from one to N in the radial direction of the iron core wrapping post from inside to outside, the public winding is wrapped and distributed on even number layers from two to N-1 in the radial direction of the iron core wrapping post from inside to outside, and the windings of the layers corresponding to the central axis of the iron core wrapping post are consistently wrapped and rotated. The transformer is connected between a power amplifier and a table body moving coil and is used for increasing the output voltage of the power amplifier to satisfy the high-voltage input requirement of a moving coil under an audio-frequency work condition. The invention has the characteristics of simplicity, reliability and low cost and can satisfy the power output requirement of a large-sized electric vibration table.

Description

technical field [0001] The invention relates to the field of electrodynamic vibration tests of environmental mechanics, in particular to an audio frequency auto-coupling output transformer applied to electrodynamic vibration test systems. The transformer is used to increase the output voltage of the power amplifier to meet the needs of high-voltage input of the moving coil under audio conditions. Background technique [0002] In the electric vibrating table system, the AC impedance of the moving coil (moving coil winding) changes with the AC frequency. When the vibrating table works at a high frequency (above 500 Hz), the main inductive reactance characteristic appears. With the increase of the AC working frequency, the moving coil The equivalent impedance also increases. In order to achieve the rated thrust, the power amplifier must have a higher output voltage. However, the maximum output voltage of the power amplifier is often limited by the power output device or power...

Claims

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Application Information

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IPC IPC(8): H01F30/02H01F27/28H01F41/06
Inventor 武元桢徐付新朱雅俐
Owner SUZHOU SUSHI TESTING INSTR CO LTD
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