VOOHU音频隔离变压器专业-级音质保证，告别信号干扰
1.音频变压器概述
An audio transformer, a special transformer that processes audio signals, is mainly used to change the voltage level of audio signals and provide impedance matching to ensure that audio signals are efficiently transmitted between different devices. Its working principle, structural characteristics, process flow, selection parameters and design precautions will be summarized in detail in this article. In our daily lives, audio transformers play an important role in converting high voltage to low voltage without compromising sound quality. It is widely used in the input stage of microphones, the output stage of speakers, and the coupling and impedance matching of amplifiers to ensure smooth coordination between audio devices.
1）输入变压器
输入变压器是声音与音频设备之间的变压器，也可称为麦克风变压器，其主要作用是阻抗匹配。
2）输出变压器
输出变压器连接到功放的功率放大器和扬声器进行阻抗转换，可以输出较大功率的音频变压器。
3）级间变压器
The interstage transformer is a transformer between the intermediate stage of the amplifier, such as the common coupling alternator, push transformer, etc., the main function is to convert the first frequency signal voltage, so that the impedance of the pre- and post-stage amplifiers can be matched.
There are two types of input transformers: LINE input cattle and MIC input cattle inputs. LINE input cattle are suitable for driving low input impedance amplifier circuits, or connecting multiple amplifier inputs in parallel to ensure efficient signal transmission. The MIC input cow is mainly used for the input end of the microphone amplifier, most of which are designed to have gain to reduce the gain pressure of the subsequent amplification stage, and a few are designed to have no gain.
2）输出变压器
In audio and playback equipment, output transformers are used for impedance conversion of circuits. Some output transformers use a 1:1 ratio, keep the level constant, and the main function is to isolate the signal. Due to the low impedance of the output transformer, it is often driven by discrete operational amplifiers for more stable and fuller sound quality.
3）级间变压器
The interstage transformer is located between the front and rear stages of the amplifier, such as the coupling transformer and the push transformer, and its main function is to adjust the audio signal voltage, realize impedance matching, and ensure the smooth transmission of the signal. The output transformer connects the power amplifier and the speaker, is responsible for impedance conversion, and is capable of outputting high-power audio signals.
4）音频信号电压隔离
The transformer provides galvanic isolation, 1:1 transformer does not change the signal level, prevents interference, is suitable for signal transmission and ground isolation, and can also convert signal types.
应用场景：领夹式麦克风、摄像头麦克风、有线/无线麦克风、乐器麦克风、麦克风、通讯设备、高端扬声器。
*VOOHU产品描述
The audio isolation transformer is five pins for the middle tap, four pins are not tapped, with isolation transformer can remove AC frequency interference, the system uses isolation transformer to block the return of alternating current of the rear audio equipment, with isolation transformer can avoid burning the output of the pre-stage equipment,可以解决系统接地产生的交流声，减少平衡和非平衡传输时外界的干扰。
*VOOHU产品优势
体积小，电感值高，现货直发
*推荐可选型号
An audio transformer, a special transformer that processes audio signals, is mainly used to change the voltage level of audio signals and provide impedance matching to ensure that audio signals are efficiently transmitted between different devices. Its working principle, structural characteristics, process flow, selection parameters and design precautions will be summarized in detail in this article. In our daily lives, audio transformers play an important role in converting high voltage to low voltage without compromising sound quality. It is widely used in the input stage of microphones, the output stage of speakers, and the coupling and impedance matching of amplifiers to ensure smooth coordination between audio devices.
- 2.音频变压器的作用
- *阻抗和电压转换
- The transformer can be boosted/bucked and the impedance can be changed, and the impedance of the audio transformer can be changed in accordance with the square of the turns ratio. The primary to secondary voltage ratio is equal to the turns ratio, while the impedance ratio is the result of the turns ratio squared.
- *阻抗由电压到磁通量的转换效率决定
- Audio transformers are used to match amplifiers and loads of different impedances to improve power transmission efficiency and prevent signal distortion. Its design is similar to that of a low-frequency transformer, but is suitable for a wider frequency range.
- *平衡 – 非-平衡之间的过渡
- Audio transformers are used to match amplifiers and loads of different impedances to improve power transmission efficiency and prevent signal distortion. Its design is similar to that of a low-frequency transformer, but is suitable for a wider frequency range.
- *音频信号电压隔离
- The transformer provides galvanic isolation, 1:1 transformer does not change the signal level, prevents interference, is suitable for signal transmission and ground isolation, and can also convert signal types.
- *用于音频信号的着色
- 3.音频变压器的分类
1）输入变压器
输入变压器是声音与音频设备之间的变压器，也可称为麦克风变压器，其主要作用是阻抗匹配。
2）输出变压器
输出变压器连接到功放的功率放大器和扬声器进行阻抗转换，可以输出较大功率的音频变压器。
3）级间变压器
The interstage transformer is a transformer between the intermediate stage of the amplifier, such as the common coupling alternator, push transformer, etc., the main function is to convert the first frequency signal voltage, so that the impedance of the pre- and post-stage amplifiers can be matched.
- 4.音频变压器的应用及场景
There are two types of input transformers: LINE input cattle and MIC input cattle inputs. LINE input cattle are suitable for driving low input impedance amplifier circuits, or connecting multiple amplifier inputs in parallel to ensure efficient signal transmission. The MIC input cow is mainly used for the input end of the microphone amplifier, most of which are designed to have gain to reduce the gain pressure of the subsequent amplification stage, and a few are designed to have no gain.
2）输出变压器
In audio and playback equipment, output transformers are used for impedance conversion of circuits. Some output transformers use a 1:1 ratio, keep the level constant, and the main function is to isolate the signal. Due to the low impedance of the output transformer, it is often driven by discrete operational amplifiers for more stable and fuller sound quality.
3）级间变压器
The interstage transformer is located between the front and rear stages of the amplifier, such as the coupling transformer and the push transformer, and its main function is to adjust the audio signal voltage, realize impedance matching, and ensure the smooth transmission of the signal. The output transformer connects the power amplifier and the speaker, is responsible for impedance conversion, and is capable of outputting high-power audio signals.
The transformer provides galvanic isolation, 1:1 transformer does not change the signal level, prevents interference, is suitable for signal transmission and ground isolation, and can also convert signal types.
- 5.VOOHU音频变压器推荐
The audio isolation transformer is five pins for the middle tap, four pins are not tapped, with isolation transformer can remove AC frequency interference, the system uses isolation transformer to block the return of alternating current of the rear audio equipment, with isolation transformer can avoid burning the output of the pre-stage equipment,可以解决系统接地产生的交流声，减少平衡和非平衡传输时外界的干扰。
体积小，电感值高，现货直发
*推荐可选型号
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