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A modulation transformer is an audio-frequency transformer that forms a major part of most AM transmitters. The primary winding of a modulation transformer is fed by an audio amplifier that has about 1/2 of the rated input power of the transmitter's final amplifier stage.
In a horn loudspeaker, the term acoustic transformer or acoustical transformer may refer to either of two components: Horn (acoustic) , which attaches to the compression driver unit Phase plug , a component within the compression driver, the interface between the diaphragm and the horn
Audio transformers were originally designed to connect different telephone systems to one another while keeping their respective power supplies isolated, and are still commonly used to interconnect professional audio systems or system components, to eliminate buzz and hum. Such transformers typically have a 1:1 ratio between the primary and the ...
Perceived fidelity (quality) of audio reproduction is a hardly quantifiable, subjective measure that should be left to each individual listener's taste. Apart from audio fidelity, circlotron OTL have certain benefits versus asymmetrical OTLs (i.e. Futterman amplifier) and conventional, transformer-coupled amplifiers: Scalability.
Typical push–pull audio tube power amplifier, matched to loudspeaker with an impedance-matching transformer. Audio amplifiers typically do not match impedances, but provide an output impedance that is lower than the load impedance (such as < 0.1 ohm in typical semiconductor amplifiers), for improved speaker damping.
Loudspeaker with attached step-down transformer for use on a constant-voltage system. Constant-voltage speaker systems refer to networks of loudspeakers which are connected to an audio amplifier using step-up and step-down transformers to simplify impedance calculations and to minimize power loss over the speaker cables.
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In telecommunications, a repeating coil is a voice-frequency transformer characterized by a closed magnetic core, a pair of identical balanced primary windings, a pair of identical but not necessarily balanced secondary (drop) windings, and low transmission loss at voice frequencies.