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Lab 8 - The Class B and Class
http://www.carlomozetic.net/older/userfiles/Lab_8.pdf
Class AB amplifiers are often used as the output stage of audio systems because they are much more efficient at delivering load power than the Class A amplifiers. We know from our studies that the theoretical efficiency of the Class B amplifier is 78.5%. This is much greater than the Class A amplifier at 25%.
Class AB Power Amplifiers - Learn About Electronics
https://www.learnabout-electronics.org/Amplifiers/amplifiers55.php
The class AB push-pull output circuit is slightly less efficient than class B because it uses a small quiescent current flowing, to bias the transistors just above cut off as shown in Fig. 5.5.1, but the crossover distortion created by the non-linear section of the transistor’s input characteristic curve, near to cut off in class B is overcome. In class AB each of the push-pull transistors is …
Push-Pull Class B and Class AB Amplifiers - Analog Devices
https://wiki.analog.com/university/courses/engineering_discovery/lab_14
Class AB amplifiers are often used as amplifier output stages in emitter-follower and common-emitter configurations. The common-emitter Class AB stage is used in rail-to-rail operational amplifier (op-amp) stages in order to allow the output voltage to swing very close to the power supply voltages.
Class AB Audio Amplifier - HACK A WEEK
http://hackaweek.com/hacks/class-ab-audio-amplifier/
This week we’ll take a look at another type of audio amplifier, the class AB amp. As we saw in Hack #19 the class A amp has a transistor that is biased with a voltage that makes it essentially stay turned on all the time. This single transistor handles the entire waveform both positive and negative. The class B amplifier uses two transistors.
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