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class AB amplifier

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class AB amplifier [‚klas ¦ā¦bē ′am·plə‚fī·ər]
(electronics)
An amplifier in which the grid bias and alternating grid voltages are such that anode current in a specific tube flows for appreciably more than half but less than the entire electric cycle.
A transistor amplifier whose operation is class A for small signals and class B for large signals.


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Class AB amplifiers running full out are approximately 70% efficient at full power so the power coming out of the wall is 13 amps, which is just under the rating for a standard wall outlet (leaving 2 amps to supply everything else on the same AC loop).
This enables 35% lower power dissipation under multi-carrier signal operation compared to class AB amplifiers.
ON Semiconductor's new Class AB amplifier ensures noise-free amplification and is resistive to external noise sources, so it guarantees a high-quality audio performance.
 
 
 
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