Question
Download Solution PDFIdentify the main feature of power amplifiers from the options given below.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe features of power amplifiers:
- As the power amplifiers are handling a large amount of power it is important to transfer maximum power to the load.
- To do so, impedance matching between the o/p impedance of the power amplifier and load has to be ensure.
- Because the loads like loudspeakers are having low impedance.
- Power amplifiers are also having low output impedance to match to the load.
- The common collector or emitter follower circuit is normally used as the power amplifier because it has a low o/p impedance.
- Due to the use of heat sinks and large size power transistors, the power amplifiers’ become bulky.
- A transformer may also be used for impedance matching on the o/p side.
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