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Bipolar Transistor Cookbook — Part 7 | Nuts & Volts Magazine
https://www.nutsvolts.com/magazine/article/bipolar_transistor_cookbook_part_7#:~:text=CLASS-AB%20BASICS%20The%20cross-over%20distortion%20of%20the%20class-B,a%20circuit%20is%20known%20as%20a%20class-AB%20amplifier.
Class AB Output Stage - University of Pennsylvania
https://www.seas.upenn.edu/~ese319/Lecture_Notes/Lec_22_ClassAB_Amplifier_12.pdf
Basic Class AB Amplifier Circuit 1. Bias Q N and Q P into slight conduction (fwd. act.) when v I = 0: i N = i P. 2 Ideally Q N and Q P are: a. Matched (unlikely with discrete transistors and challenging in IC). b. Operate at same ambient temperature. NOTE. This is base-voltage biasing with all its stability problems! i L=i N −i P 3.For v i > 0: i N > i P i.e. Q N
Class AB Power Amplifiers - Learn About Electronics
https://www.learnabout-electronics.org/Amplifiers/amplifiers55.php
Class AB Power Amplifiers. 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.
Classes of Power Amplifiers (Class A, B, AB, C, D ...
https://circuitdigest.com/tutorial/classes-of-power-amplifier-explained
Class AB Amplifier. An alternate approach to overcome the cross-over distortion, is to use the AB amplifier. Class AB amplifier uses intermediate conduction angle of both Classes A and B, thus we can see the property of both Class A and Class B amplifier in this AB class of amplifier topology.
The Difference Between Class A and Class AB Guitar …
https://proaudioland.com/news/difference-class-a-class-ab-guitar-amps/
The Basics Of Amp Classes. A guitar amplifier’s most basic tube consists of three elements: grid, plate, and cathode. The audio input to the tube is called the grid. This element of a tube has the role in controlling the electrons flow. The plate is a tube element that attracts the electrons, having a positive charge.
Bipolar Transistor Cookbook — Part 7 | Nuts & Volts …
https://www.nutsvolts.com/magazine/article/bipolar_transistor_cookbook_part_7
The GEM: Class-A//AB Amplifier
http://www.zen22142.zen.co.uk/Circuits/Audio/gem100.htm
The GEM is an audio power amplifier embodying simultaneously active Class A and Class AB output stages for 100+ Watts into a 4 ohm loudspeaker. The front end pcb will drive up to 100+W variants, or the 200+ Watts version into a 4 ohm loudspeaker load.
Class D Audio Amplifiers: What, Why, and How | Analog …
https://www.analog.com/en/analog-dialogue/articles/class-d-audio-amplifiers.html
For an audio amplifier with 10-W PLOAD max, an average PLOAD of 1 W can be considered a realistic listening level. Under this condition, 282 mW is dissipated inside the Class D output stage, vs. 2.53 W for Class B and 30.2 W for Class A. In this case, the Class D efficiency is reduced to 78%—from 90% at higher power.
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