BJT as a operational amplifier | Power amplifiers in Sinhala part 1

Hi there, from this video I will teach you about power amplifiers. We can not use a low power signal to drive a speaker. If we want to drive a speaker we can use a power amplifier circuit to amplify the low power signal. if we want to design a power amplifier circuit we need to know about what are the theories that we need to design a power amplifier circuit. That is why I started this video series. From this video, you can learn about the first basic theory that we need to know about power amplifiers. I hope you like this video and thanks for watching this video. Non-inverting amplifier theory video
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