Professional-grade sound quality assurance of VOOHU audio isolation transformer, say goodbye to signal interference
Professional-grade sound quality assurance of VOOHU audio isolation transformer, say goodbye to signal interference
1.An overview of audio transformers
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.
Our common audio transformers are divided into:
1）Input transformer
The input transformer is the transformer between the voice and the audio equipment, which can also be called the microphone transformer, and its main role is impedance matching.
2）Output transformer
The output transformer is connected to the power amplifier of the amplifier and the speaker for impedance conversion, and can output a larger power audio transformer.
3）Interstage transformers
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.
1）Input transformer
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）Output transformer
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）Interstage transformers
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）Audio signal voltage isolation
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.
Application scenarios: lavalier microphones, camera microphones, wired/wireless microphones, musical instrument microphones, microphones, communication equipment, high-end speakers.
There are a variety of models of VOOHU audio transformers to meet the needs of different application scenarios, whether it is professional audio equipment or home audio systems, you can find the right solution.
*Description of the VOOHU product
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, can solve the AC sound generated by the system grounding, and reduce the interference of the outside world when balanced and unbalanced transmission.
*Advantages of VOOHU products
Small size, high inductance value, spot straight hair
*Optional models are recommended
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.The role of the audio transformer
- *Impedance and voltage conversion
- 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.
- *The impedance is determined by the conversion efficiency of the voltage to the magnetic flux
- 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.
- *Equilibrium – the transition between non-equilibrium
- 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.
- *Audio signal voltage isolation
- 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.
- *For the coloring of audio signals
- 3.Classification of audio transformers
Our common audio transformers are divided into:
1）Input transformer
The input transformer is the transformer between the voice and the audio equipment, which can also be called the microphone transformer, and its main role is impedance matching.
2）Output transformer
The output transformer is connected to the power amplifier of the amplifier and the speaker for impedance conversion, and can output a larger power audio transformer.
3）Interstage transformers
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.Applications and scenarios of audio transformers
1）Input transformer
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）Output transformer
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）Interstage transformers
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）Audio signal voltage isolation
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.
Application scenarios: lavalier microphones, camera microphones, wired/wireless microphones, musical instrument microphones, microphones, communication equipment, high-end speakers.
- 5.VOOHU audio transformer recommended
There are a variety of models of VOOHU audio transformers to meet the needs of different application scenarios, whether it is professional audio equipment or home audio systems, you can find the right solution.
*Description of the VOOHU product
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, can solve the AC sound generated by the system grounding, and reduce the interference of the outside world when balanced and unbalanced transmission.
*Advantages of VOOHU products
Small size, high inductance value, spot straight hair
*Optional models are recommended
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