- #1
fisico30
- 374
- 0
Hello Forum,
question about BJT transistors: some books say that they are current (base current) operated...
Some other books state that the emitter-collector current is controlled by the voltage between the base and the emitter...which one is correct?
FET are voltage controlled...
Holes are not really carriers, correct? They are just empty places that can be filled by electrons...
Also, a transistor, in general, can act as a switch (ON or OFF) or as an amplifier...
But it is not an active device that produces extra energy: it simply acts like a switch, but instead of being a binary switch (only ON or OFF), it acts as a continuous switch...that is what is mean by amplification: the transistor allows more or less current in an analog fashion...
thanks
fisico30
question about BJT transistors: some books say that they are current (base current) operated...
Some other books state that the emitter-collector current is controlled by the voltage between the base and the emitter...which one is correct?
FET are voltage controlled...
Holes are not really carriers, correct? They are just empty places that can be filled by electrons...
Also, a transistor, in general, can act as a switch (ON or OFF) or as an amplifier...
But it is not an active device that produces extra energy: it simply acts like a switch, but instead of being a binary switch (only ON or OFF), it acts as a continuous switch...that is what is mean by amplification: the transistor allows more or less current in an analog fashion...
thanks
fisico30