How do I choose an audio transformer?
DESIGN OF AUDIO TRANSFORMERS
Choice of core size and its material depends upon frequency response, power levels, and harmonic distortion. Audio transformers should preferably use both high-permeability cores and the largest number of coil turns to create high primary inductance.
What does an audio transformer do?
An audio transformer is an electromagnetic device that is intended to isolate an input circuit from an output circuit and provide filtering to a signal that passes through it. It is an audio device because it is designed to operate on signals with a frequency spectrum in the audible band.
What is audio frequency transformer?
Audio Frequency Transformer is used at the output stage of Audio Frequency electronic amplifier for matching the load to the output impedance of the power amplifier stage. Here the load is fixed but the frequency is variable over a band (audio, 20 Hz to 20 kHz), the response being the ratio V2/V1.