site that clearly explains transistors

[logearav]

1. The problem statement, all variables and given/known data

friends,
i have difficulty in applying KIRCHOFF VOLTAGE LAW in transistors. i am confused because it is totally different from circuits with batteries and resistances where finding the path of closed loop is easy say wheatstone's bridge.
but in transistor i cannot understand a statement like this " apply KVL TO Vbe loop or Vce loop.
can anyone give a link to a website which clearly explains these concepts?
help in this regard will be greatly appreciated

2. Relevant equations



3. The attempt at a solution

[Mindscrape]

It means to say apply the KVL from the base to the emitter or from the collector to the emitter. Could you give an example of what confuses you?

[logearav]

both from base to emitter and also from collector to emitter. i am confused which is the starting point and the path. for example, which is positive and which is negative when i find Vbe and Vce.

[Mindscrape]

Here, I just googled transistor circuit and clicked on one of the first websites, so here's a random example.

http://www.kpsec.freeuk.com/trancirc.htm

Look at that first transistor circuit, the one with LEDs. The Vbe loop goes from the 9V to 470 to LED C to vce to gnd. The Vbe loop goes from 9V to switch to led to vbe to gnd.

[logearav]

dear mr. mindscrape, thanks a ton for the link.