Help Calculating Rb Collector Emitter Feedback Bias

Thread Starter

Ronscott1

Joined Nov 5, 2009
15
Hey. I am designing an amplifier using collector emitter feedback bias. I am using a 2n5088 transistor, which has a minimum gain of 300 @ 1mA 5V Vce. I have Rc calculated to 3.6kOhm and Re calculated to 900 Ohm. How do I determine what value of Rb is needed?
 

Jony130

Joined Feb 17, 2009
5,127
Maybe you post the schematic and tell us more about supply voltage, voltage gain etc.

But in general
Rb = ( Vcc - (Vbe+Ic*Re) / Ib
 

mik3

Joined Feb 4, 2008
4,843
A circuit schematic will clear things up. Also, what are the specifications of your amplifier, like gain, input-output voltages range etc.
 
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