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question and details

This is the question and details. I believe I could manage to get the graph from the given circuit. (part a)

This is the graph I drew. But I could not find part b and c, since they require fundamental loop equations and fundamental cut set equations. I can easily find them if 3 terminal element (the transistor here) does not exist.

graph I drew

I spent hours but could neither find any information on web nor figure it out myself.

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2 Answers 2

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You can still do regular loops. For example: V65 + V54 + V48 + V86 = 0, where the indices refer to your nodes as marked in the picture.

So we have 1V + V54 + 0.5V - 2V = 0, V54 = 2V - 1V - 0.5V = 0.5V.

You can calculate the other element voltages across the terminal of the transistors the same way.

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  • \$\begingroup\$ I found V53=-5V with your method. Does that mean T5 has a voltage value 5.5 (V34) ? If so, why? \$\endgroup\$
    – Jacob Warbler
    Commented Oct 8, 2017 at 21:52
  • \$\begingroup\$ V34 sounds correct. I'm not sure I understand your question about "why". That looks like a simple circuit analysis exercise and I don't think it's intended to represent a real world schematic. \$\endgroup\$
    – Hilmar
    Commented Oct 9, 2017 at 13:10
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The voltages are just a matter of a few additions or subtractions once the 0 V point has been defined.

enter image description here

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