Transistor Saturation

[vasimavr]

Hi I am Vasimavr and I was wondering if you could help me do my homework.

For the circuit of the picture the values we know are:

Vcc = 12,2V
VBE = 0,7 V
β = 500

RE = 500 OHM
RC = 2000 OHM
R2 = 14 KOHM

Find R1 so that the operating point Q of the transistor, to be in saturation.

Thanks for your help.

 

[Arouse1973]

You missed something from your post.
"Hi I am Vasimavr and I was wondering if you could help me do my homework"
" Thanks for your help"
"Vasimavr"

 

[davenn]

Hi Vasimavr

the people here wont give you the outright answers, but will help you work your way through the problem
Ok, so you must have been studying this subject in class

What have you learnt so far about biasing transistors in general ?
what formula do you think are appropriate to help you solve this question ?

cheers
Dave

 

[KrisBlueNZ]

What is the definition of saturation (for a BJT), according to your course material?

 

[vasimavr]

I find it a bit complecated exercise.... at theory only have the following

 

[vasimavr]

The cource material for BJT gives:

 

[KrisBlueNZ]

The diagrams you posted in post #5, and the formula you posted in post #6, all relate to FETs, not BJTs!