quick very simple question about transistors

[Gibson486]

Vb in this case would be zero, right?

 

[mrrman]

it is rated at 0v - 0.6v because the voltage drop between any device is 0.6V

 

[Gibson486]

i know that, but that aside, i need to find out what Vb should be in that circuit. I use regualr node voltage, but that seems wrong since i just get volatges that are oppiste of each other.I want to say this is in saturation, but i cannot prove it is not in active stae.

 

[Analog]

What is the transistor beta?

 

[Gibson486]

Originally posted by: yellowfiero
What is the transistor beta?

30

 

[Gibson486]

Originally posted by: Gibson486

Originally posted by: yellowfiero
What is the transistor beta?

30. that alone tells me i did t wrong since I(c)=BI(b)

 

[her209]

Could you make the white space any bigger?... jeesh.

 

[Gibson486]

Originally posted by: her209
Could you make the white space any bigger?... jeesh.

you like MS paint, huhh?

 

[Analog]

if Beta is 30, answer is Vb = 2.1V

 

[Gibson486]

Originally posted by: yellowfiero
if Beta is 30, answer is Vb = 2.1V

what i do not get is that since Vb is hooked to ground, why shouldn't it be 0? It is what i did for all my hw problems, and they came out right.

 

[Analog]

Vb can't be zero, since a current is flowing through the base.