1. May 13, 2008 #1

   sanado

   

   Is it the voltage divider and/or the Rc resistor that is responsible for biasing an NPN transistor. Im aware the role each play, but was just wondering which part actually biased the transistor, i wouldve thought both?

    

   sanado, May 13, 2008
2. 
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3. May 13, 2008 #2

   marcusl

   

   Science Advisor

   Gold Member

   Actually emitter resistor, not collector. In the simple view, the base voltage divider sets the base voltage which in turn sets the emitter voltage 0.7V lower. The equilibrium bias current is then 0.7/Re.

    

   marcusl, May 13, 2008

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