Audio Power Amplifier by Ms. Shristy Khandelwal, Biyani Girls College

In this video Ms. Shristy Khandelwal, asst. professor, Biyani Girls College, explains the purpose of power amplifier which takes a signal from a source device and makes it suitable for driving a loud speaker. Audio power amplifiers are those amplifiers which are designed to drive loud speakers .Power is not really something that can be “amplified”. Voltage and current can be amplified.