Amplifier Construction 1 | Page 17

3 Microphone  Charecteristics of microphone  Working principle of microphone amp  Useful informations 3.1 Lead-in activity: Look at the picture below and try to guess what it is and what are they doing. Answer the questions. Have you got a smartphone? How often do you use this application to chat with your friends? What does the icon on the right corner symbolize? 17