Science Questions and Answers

Start Your Free Trial

Please, can anyone explain the use of a transistor as an  amplifier????  Urgent!

Expert Answers info

bandmanjoe eNotes educator | Certified Educator

calendarEducator since 2011

write1,351 answers

starTop subjects are Science, Literature, and Social Sciences

It helps to understand the meaning of the terms you are working with here.  Anything that operates as an amplifier means it takes the current coming in and steps it up in some form or fashion, so that the outgoing current is higher than what came in.  Some transistors have wires wrapped a coil with a certain number of turns, and then the outgoing wire has twice the number of turns, which produces a current approximately twice the power of the incoming current.  Sometimes there is a need to step up the power supply or step down the power supply.  Anything that serves as an amplifier increases the amplitude of the waves of the frequency that is being transmitted, giving the frequency more power, more energy.  So transistors provide a link in this needs category, to step up the power being supplied to the device from the standard voltage coming out of the electic outlets in the home.

check Approved by eNotes Editorial