Let's say I want to put transistor in a circuit; a transistor that amplifies the current. So after amplification components are able to "take" more current for themselves if needed. But the question is: if I amplify the current from 1 Amp to 5 Amps, does the transformer, which I used to power the circuit has to be capable of working at 5 Amps too? Have to all components be able to work at 5 Amps? Or is this required only for components after the amplification part of circuit?
I know this question is not clear but this thing bothers me all the time when learning about transistors. Please reply.