Posted by: Ghulam Abbas
Posted on: 26 October 2014
This project is all about a voice amplification device which can be used in houses, offices and many other places wherever it is required. In this project we are actually transmitting the sound, detected by a very sensitive microphone, through LASER. The sound received by the photodiode is amplified using multistage common emitter amplifiers. The amplified voice then can be heard through a speaker or through hands free.