Hello all! My primary goal this summer is to get a better grasp with transistors and analogue circuits. So far I've gone through the P-N diode and that all makes sense but the transistor is taking a little bit longer. I have gone through the AAC resources and they are great, but some things are still unclear.
For instance, say for a common-base transistor (npn) set-up with the emitter-base forward bias and the collector-base reverse-bias.
1. How does the base-current control the collector current? Isn't the emitter current more important because without it there would be zero initial electron flow?
2. Besides the simple relation of Ic = B*Ib, why is Ic zero, if Ib is zero?
3. How is does a shorted transistor act as a feedback diode?
4. Is a current mirror just a way of producing current sinks/sources or are there other uses, and where do you attach other transistors to make an array of current sinks/sources, at the collector or the base of the master transistor?
Thank you very much!
J
For instance, say for a common-base transistor (npn) set-up with the emitter-base forward bias and the collector-base reverse-bias.
1. How does the base-current control the collector current? Isn't the emitter current more important because without it there would be zero initial electron flow?
2. Besides the simple relation of Ic = B*Ib, why is Ic zero, if Ib is zero?
3. How is does a shorted transistor act as a feedback diode?
4. Is a current mirror just a way of producing current sinks/sources or are there other uses, and where do you attach other transistors to make an array of current sinks/sources, at the collector or the base of the master transistor?
Thank you very much!
J