Relative Information about the Audio Output Transformer Impedance - Ningbo Wanji Electronics Science & Technology Co., Ltd.

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Relative Information about the Audio Output Transformer Impedance

How do we determine which of our audio output transformer will match appropriate impedance range? The average beam power output tube of an audio output transformer, such as the 6V6 requires a load of around 5,000 ohms, and the average speaker voice coil can vary from as low as 1 ohm to 8 ohms or more. It needs to calculate the impedance of an audio output transformer, but first to look at the function of an audio output transformer and how it works.

The function of the audio output transformer is to transform the high impedance of the output tube to match the much lower impedance of the speaker. This is necessary to get an efficient transfer of the audio signal to the speaker

When replacing the audio output transformer on a radio, the replacement should match the impedance of the original as close as possible. If the wrong audio output transformer is used, the results can be low output and loss of tone quality. Universal audio output transformers are available which have multi-tapped primary and secondary windings to match a wide impedance range.

It is not uncommon for the vintage radio collector to have various audio output transformers laying about that have been pulled from parts sets, or have been obtained at swap meets. Often times, the primary and secondary impedance information is not available for these units, and it would be nice to have that information to be able to use these in a set that needs a new audio output transformer.

As to see, the audio output transformer impedance is an important issue needs to be paid attention.

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