Some articles on class ab, class, ab:
... of modern commercial Hi-fi amplifier designs have until recently used Class AB topology (with more or less pure low-level Class A capability depending ... It should however be noted that Class D topology (which is vastly more efficient than Class B, and has garnered some respect from audiophiles) is more and more frequently applied where traditional ... Class AB push-pull topology is nearly universally used in tube amps for electric guitar applications that produce power of more than about 10 watts ...
... Class B and AB amplifiers employ 2 active devices to cover the complete 360 deg of input signal flow ... Class B bias is when the collector current Ic with no signal is just conducting (about 1% of maximum possible value) ... Class AB bias is when the collector current Ic is about 1/4 of maximum possible value ...
... Their use in RF applications are listed briefly below Class A amplifiers are very inefficient, they can never have an efficiency better than 50% ... Class B can be 60 to 65% efficient ... Class AB1 is where the grid is more negatively biased than it is in class A ...
... In the class-D amplifier the input signal is converted to a sequence of higher voltage output pulses ... form of modulation such as Delta-sigma modulation (for example, in the Analog Devices AD1990 class-D audio power amplifier) ... such as those used in pulse generators are examples of class-D amplifiers ...
Famous quotes containing the word class:
“We are the party of all labor.
The whole earth shall be ours to share
And every race and craft our neighbor.
No idle class shall linger there
Like vultures on the wealth we render
From field and factory, mill and mine.
Tomorrows sun will rise in splendor
And light us till the end of time.”
—Eugène Pottier (18161887)