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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. The secondary winding is in series with the power supply of that final radio-frequency amplifier stage, thereby allowing the audio signal to lower and raise the instantaneous DC ...
A tetrode's plate and screen grid voltage is modulated via an audio transformer. The resistor R1 sets the grid bias; both the input and output are tuned circuits with inductive coupling. Modulation circuit designs may be classified as low- or high-level (depending on whether they modulate in a low-power domain—followed by amplification for ...
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
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Phone connector (audio) Phono input; Ping-pong recording; Pitch control; Pitch correction; Pitch detection algorithm; Pitch shifting; Portastudio; Power alley; Powered speakers; Preamplifier; Precedence effect; Pregap; Princeton Sound Lab; Print-through; Pro Tools; Producing Great Sound for Film and Video; Professional audio; Professional ...
AES3 is a standard for the exchange of digital audio signals between professional audio devices. An AES3 signal can carry two channels of pulse-code-modulated digital audio over several transmission media including balanced lines, unbalanced lines, and optical fiber.
The single triode vacuum tube amplifies the radio signal, then also amplifies the audio modulation signal extracted from it by the detector. A reflex radio receiver , occasionally called a reflectional receiver , is a radio receiver design in which the same amplifier is used to amplify the high-frequency radio signal (RF) and low-frequency ...
The antenna coupling transformer also functioned as an impedance matching transformer, that allowed a better match of the antenna impedance to the rest of the circuit. One or both of the coils usually had several taps which could be selected with a switch, allowing adjustment of the number of turns of that transformer and hence the "turns ratio".