I have a homework problem that asks "What's the result of ganging two "npn" transistor amplifiers together?"
From what it looks like (and intuition tells me), it seems like ganging up two npn transistors is connecting them in either series or parallel, which (I think) would have dramatically different outcomes. I was wondering if someone could please help me understand what "ganging" transistors is?
Also, my answer to the question is:
Ganging two npn transistors together will result in amplification of the already amplified signal. This will cause it to heat up, which in turn will increase the current flowing through the transistor, resulting in thermal runaway. However this can be prevented by adding low-value resistors to each emitter terminal. Another outcome of ganging two transistors together is the inversion of the already inverted signal. The 1st transistor shifts the phase of the input signal by 180° and the 2nd shifts the phase 180° again, resulting in an output signal with the same phase as the input.
Any help would be tremendous. I'm taking a graduate level analytical chemistry course and as a mere chemistry major with no prior knowledge of circuits, I'm definitely in way over my head.
From what it looks like (and intuition tells me), it seems like ganging up two npn transistors is connecting them in either series or parallel, which (I think) would have dramatically different outcomes. I was wondering if someone could please help me understand what "ganging" transistors is?
Also, my answer to the question is:
Ganging two npn transistors together will result in amplification of the already amplified signal. This will cause it to heat up, which in turn will increase the current flowing through the transistor, resulting in thermal runaway. However this can be prevented by adding low-value resistors to each emitter terminal. Another outcome of ganging two transistors together is the inversion of the already inverted signal. The 1st transistor shifts the phase of the input signal by 180° and the 2nd shifts the phase 180° again, resulting in an output signal with the same phase as the input.
Any help would be tremendous. I'm taking a graduate level analytical chemistry course and as a mere chemistry major with no prior knowledge of circuits, I'm definitely in way over my head.