Electronic Devices - BJT Amplifiers - Discussion
Discussion Forum : BJT Amplifiers - General Questions (Q.No. 13)
13.
Refer to this figure. Calculate the value of VB.
Discussion:
6 comments Page 1 of 1.
Bramaguptha said:
6 years ago
Get the Vth using voltage divider for R1 and R2. Vth : Vcc ( R2/ R1 + R2) = 4.4 V,
* Vth - Vbe *,
Vth = 4.4,
Vbe =0.7 ,
4.4 - 0.7 = 3.7.
* Vth - Vbe *,
Vth = 4.4,
Vbe =0.7 ,
4.4 - 0.7 = 3.7.
Cripy said:
7 years ago
@Sumit.
The exact formula is VB= VCC* (R2/R1R2).
The exact formula is VB= VCC* (R2/R1R2).
Sasdfsdf said:
9 years ago
@Sumit.
Note: R1= 22K not 27K.
Note: R1= 22K not 27K.
Ria said:
10 years ago
Vc is 20V connected to the collector.
Guru said:
1 decade ago
How do you get vc?
Sumit said:
1 decade ago
Using voltage divider rule
vb = Vc * r2/ (r2+r1)
= 20v * 5K/ (5+27)K
= 3.7 v
vb = Vc * r2/ (r2+r1)
= 20v * 5K/ (5+27)K
= 3.7 v
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