Power Amplifiers: Definition, Classification, Classes & Types
IMPORTANT LINKS
Analog Electronics
- 168 Topic Specific
- 52 Weekly Revision
- 24 Monthly Digest
- 12 Need-to-Know NEWS
- 96 State Specific
- 10 Previous Year Questions
- 17 Revision 2024
- 52 Advanced Current Affairs
Classification of Power Amplifiers
Power Amplifiers FAQs
Which type of amplifier is best?
There is no best amplifier, different amplifiers are used for different purposes, and it depends upon specific requirement to use what type of amplifie
Define power gain of amplifier?
It is defined as the defined as the ratio of the output power to the input power and is usually expressed in decibels (dB). The gain of power amplifier can be calculated using the following formula,
Why is Class AB power amplifier used?
Because Class AB offers a decent balance between classes A and B in terms of efficiency and linearity, i.e., 50% and 60%. Because the output signal's amplitude and phase are linearly related to the input signal's amplitude and phase, the class A, B, and AB amplifiers are known as linear amplifiers.
How can Class A Power Amplifier be analysed?
This can be analysed in two ways as Positive half cycle and negative half cycle. For Positive half cycle in input →Negative half cycle is obtained at output For Negative half cycle in input → Positive half cycles is obtained at output
Why are diodes used in Class AB Power amplifier?
The operating point is raised above the cutoff point due to the tiny bias voltage provided by diodes D1 and D2 in Class AB Power Amplifier.