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Classes of Audio Amplifiers | Maxim Integrated
https://www.maximintegrated.com/en/design/technical-documents/tutorials/5/5590.html#:~:text=Class%20AB%20speaker%20amps%20offer%20high%20signal-to-noise%20%28SNR%29%2C,and%20e-readers%20where%20high%20fidelity%20is%20a%20must.
Class AB Audio Power Amplifiers - High Efficiency ...
https://www.st.com/en/automotive-infotainment-and-telematics/automotive-class-ab-audio-power-amplifiers.html
Class AB Audio Power Amplifiers - High Efficiency & Performance - STMicroelectronics FILTERS Reset Filters Part Number Package Number of Channels nom Gain Capability (dB) Output Power (W) typ (@ VCC =14.4V, 10% …
AES E-Library » A High Efficiency Class D + Class AB …
https://www.aes.org/e-lib/browse.cfm?elib=8403
Traditional class AB audio amplifiers can easily offer a low distortion and a high level of integration, but their efficiency is very low. For undistorted playback, the maximum efficiency of a class AB amplifier is about 10_20% [1]. Of the various amplifier topologies with a higher efficiency, class D amplifiers are the most efficient.
What are amplifier classes and their power efficiencies?
https://www.powerelectronictips.com/amplifier-classes-power-efficiencies-faq/
The Class B amplifier can have efficiency in the 30-40% range, far better than Class A although still unacceptably high for many applications. Also, it suffers from crossover distortion which generates harmonics, arising because of the slight lag or discontinuity as one active element turns on while the other turns off (and vice versa).
Classes of Power Amplifiers (Class A, B, AB, C, D ...
https://circuitdigest.com/tutorial/classes-of-power-amplifier-explained
The efficiency is very poor in Class A amplifiers, theoretically, the efficiency varies between 25 to 30 % if used with the usual configuration. The efficiency can be improved using inductively coupled configuration but the efficiency in such case is not more than 45-50%, thus it is only suitable for low signal or low power level amplification purposes.
Class AB and Class D audio amplifiers advantages and ...
https://e2e.ti.com/support/audio-group/audio/f/audio-forum/226711/class-ab-and-class-d-audio-amplifiers-advantages-and-disadvantages
Low power efficiency usually have an average efficiency of less than 50% (Theorically they have an efficiency in excess of 70%) Applications: HiFi Systems, AV HiFi Receivers. Needs large toroidal transformers. Advantages of class D audio amplifier: High Eficiency that could be greater than 90%. Low power dissipation (Only a small heatsink can be used)
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