Hello, I need to amplify a low current (30mA) voltage signal to a higher current without changing the voltage. The device requires about 700mA for optimum performance. The input voltage is 5v.
I understand that I may use some NPN transistor but I've no idea which one. Also I've read that transistor is an active device, so i'll need an additional power source for it?
Any help you can provide is appreciated.
I understand that I may use some NPN transistor but I've no idea which one. Also I've read that transistor is an active device, so i'll need an additional power source for it?
Any help you can provide is appreciated.