Problem with transistors

Thread Starter

MrRockchip

Joined May 25, 2010
18
I have 5 problems, which are similar to each other.
But I need an example. Please, help me to solve this one:
(and I will solve the remaining 4 by myself)

 

Kermit2

Joined Feb 5, 2010
4,162
I'm a long time out of school, but I think at least one more piece of info will be needed to answer that. Yes it will either conduct or not conduct at the extremes, but I believe the transistors gain must be known to get an expression for the output.
 

hobbyist

Joined Aug 10, 2008
892
Take a look at your circuit, the bottom transistor has it's base emitter junction conducting because it is forward biased, however the collector is not biased at all, due to the top transistor being reversed biased, and not conducting.

So your voltage is the voltage of a open collector transistor with full base voltage applied.

This is just a somewhat educated guess.
 
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