This is a start for me. I'm new at amplifiers and trying to lock down a good method for designing the basic core common emitter amplifier using an NPN BJT. This is what I have come up with so far. Right off the bat is taking half the supply voltage to determine the collector resistor correct? Comments or corrections please.
Common Emitter Amplifier Design
* Determine load line Q-point from datasheet for Transistor
* VC=VS/2?
* RC=VC/IC IC from load line
* RE=(VC/10)/IC (or RC/10)
* Use transistor tester to determine HFE
* IB=IC/HFE (not used here, info only)
*VB=VE+0.7V (or Vbe from tester?)
* R1= Use voltage divider Vout=Vs(R2/R1+R2) to resolve for =VB
* R2= From voltage divider above
No feedback to the base, no emitter capacitor, just the basic core so far.
Thanks, Sam
Here is what I'm coming up with.
Common Emitter Amplifier Design
* Determine load line Q-point from datasheet for Transistor
* VC=VS/2?
* RC=VC/IC IC from load line
* RE=(VC/10)/IC (or RC/10)
* Use transistor tester to determine HFE
* IB=IC/HFE (not used here, info only)
*VB=VE+0.7V (or Vbe from tester?)
* R1= Use voltage divider Vout=Vs(R2/R1+R2) to resolve for =VB
* R2= From voltage divider above
No feedback to the base, no emitter capacitor, just the basic core so far.
Thanks, Sam
Here is what I'm coming up with.
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