Chapter 11
Large Signal (Power) Amplifiers
Learning Objectives
To get familiarity of the concepts and working principles of Power Amplifiers
- Different classes of operation of Amplifiers
- Power conversion capabilities and applications
- Merits and demerits
- Problems with distortion in Amplifiers and remedies
- Push-Pull power Amplifiers
- Advanced Power Amplifiers
11.1 CLASS-A, CLASS-B AND CLASS-C AMPLIFIERS
Power Amplifiers essentially
- Operate as large signal Amplifiers with modest amount of voltage gain and substantial amount of current gain;
- Convert as much DC input power as possible into AC signal output power;
- Find applications in Radio receiver, Public address systems, Stereo Amplifiers, Home Theatres, TV, Radio, Communication equipment ...
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