• Support PF! Buy your school textbooks, materials and every day products Here!

Biasing an NPN transistor

  • Thread starter sanado
  • Start date
  • #1
56
0
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?
 

Answers and Replies

  • #2
marcusl
Science Advisor
Gold Member
2,693
358
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.
 

Related Threads for: Biasing an NPN transistor

  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
13
Views
5K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
10
Views
5K
  • Last Post
Replies
0
Views
4K
Top