Audio transformers

Audio step-up transformers (100V transformers) are connected to the output of music amplifiers. They transform the amplifier voltages to a higher level (100V technology / ELA).

Due to the transformed lower current (at same power), the audio signals can be transmitted to remote speakers over longer distances with less copper losses or smaller cable cross-sections.

At the speaker an Impedance Matching Transformer retransforms the signal back to lower voltage and to loudspeaker impedance (4 ohms, 8 ohms or 16 ohms)

In order to transmit the voice, sound or music as distortion-free as possible over the entire frequency range, toroidal audio transformers can be used beneficially. If the design also provides split windings low leakage inductances can be realized.

The toroidal core transformers are designed for the required bandwidth.

The usual secondary voltages are 50V, 70V and 100V.

As an audio transformer can provide galvanic separation between windings (basic insulation) the risk of electric shock is reduced.