BJT Homework: DC biasing, VOC Amplification, Signal Amplitude

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The discussion focuses on a BJT homework problem involving DC biasing and voltage amplification. The parameters given include a signal voltage amplitude of ±100mV, a supply voltage (Vcc) of 15V, and specific resistor values. The task is to determine the DC biasing voltage (VBB) for an open circuit voltage amplification (A(VOC)) of -10 and assess if the amplifier can handle the specified signal amplitude. Participants emphasize the importance of attempting the problem independently before seeking assistance. The thread underscores the educational goal of collaborative problem-solving rather than providing direct answers.
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Homework Statement


the signal Vsig has a maximum voltage amplitude +-100mv
Vcc = 15V, Rc = 2.2khom, Re= 200ohm, β= 100, Vf = 0.7V, Vce,min = 0.2V, VT = 25mV
Assume the Capacitor having negligible impedance for the signal’s frequencies.


Homework Equations


a. Choose the DC biasing voltage VBB to such value that the overall open circuit voltage
amplification A(VOC) = −10.
b. Will this amplifier work properly for the specified signal amplitude?

thx in advance!


The Attempt at a Solution

 

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Hi justinliu886. http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif

I'm afraid that you have misunderstood the purpose of these forums. We try to help where you are having difficulty with some homework. But we don't do your homework for you!

Try solving it yourself, and show your working.
 
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