Description, transistor as a audio amplifier project is best for 10th 11th 12th physics school project, this project is investigatory school physics project. These projects have main function of NPN transistor BC547. These transistors as a audio amplifier by NPN transistor function, this transistor in base voltage low audio signal amplifies from audio input pin, this pin with connect any mobile headphone output socket, mobile thorough low audio song ply then it convert into high audio amplification listening in audio speaker, this project work on 9volt battery so not need electrical supply. This project ready to use and it with all technical details provide by project report format. This project more explanation available in our YouTube channel “Santos the project maker” thank you for you visit our website www.Projectmaker.in
