class AB amplifier

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.
References in periodicals archive ?
It is powered by an ES9018K2M DAC chip and class AB amplifier for each stereo channel for highest quality digital audio file processing.
Dan Eckersley, project engineer at Vectawave Technology, said the company had used the latest-generation LDMOS devices in the 500-W Model VBA 2700/3100-500 class AB amplifier.
536 employs discrete class AB amplifier topology with no integrated circuits in the signal path, along with Class A voltage gain and driver stages, a configuration that delivers exceptional sonic purity and resolution of the finest musical detail.
Then it notes that each speaker has a class AB amplifier, a kind of dual circuit that is used in some higher-quality amplifiers and car amps as well.
where the conduction angle of a class A amplifier is 2[pi] by definition and the conduction angle of a class AB amplifier is assumed to be 3[pi]/2.
A reference class AB amplifier was also tested for comparison.
The Doherty amplifier-II (a combination of a class AB carrier amplifier and a bias-tuned class C peaking amplifier) has been compared with a class AB amplifier alone.
The model accurately represents high nonlinearities and rapid phase variations of a high power class AB amplifier.
Further, with efficiency so critical for battery-operated systems and designs with limited enclosure space for heat dissipation, linearization of a power-efficient class AB amplifier is a much more desirable alternative to backing off output power.
Figure 13 shows similar data for a class AB amplifier.
The DA9057's integrated true-ground Class G headphone driver is up to 70 per cent more efficient than a standard Class AB amplifier.
The presented class AB amplifier shows an IMD performance of better than -32 dBc over a 40 dB dynamic range up to 10 W PEP.