What is it in an npn transistor that determines the voltage "maximum" for the base?
because in a typical npn transistor it is 5V, meaning if you feed 5 volt into the base it will flow 100%, 1 volt = 20%(if it is a very linear transistor).
Is it possible to somehow change the 5V to something lower, much lower, like 10 milivolts? (Because if so, then this would be a very cheap way to make it act as an amplifier - for sensors)
I am talking about the S9014C, and I am sorry but I thought that the voltage that goes to the base was always between 0 and 5 on any transistor.
If it now is as the comments say, that I am wrong, then how do I make the 0-10 milivolt range(at the base) the new 0-100% range?
The sensor that I would attatch would be a temperature sensor. (Type K Thermocouple)
Still, the only thing I'm wondering is how I can "increase" the "sensitivity" range from 0-5 volt to 0-10 milivolt. But maybe that's something that got nothing to do about transistors. What do I know.