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Bourbon daddy
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The outcome is: design a single stage amplifier with the following parameters:
Rin=1KOhms
Rout=1KOhms
Voltage Gain=15
corner frequency=300Hz
specified Transistor is BC109BP
AC supply, 0.5V
DC supply 20V
supply frequency, not specified, I have assumed 1K
We have not been given guidance on this, so I am muddling through a few blogs, particularly;
http://ampdesigns.tripod.com/engg_stuff.html
So far my results have been far from satisfactory in virtually every sense.
The circuit that I have based my own on can be found on this link:
http://ampdesigns.tripod.com/engg_stuff.html
(I can't seem to upload images of my own circuit, any pointers on this subject matter greatly appreciated).
A few of my calculations:
Icq=Icpeak+Icmin=0.03+0.005=0.035A
Selection of Re
Vre=10% VCC=2V
Re=Vre/Icq=2/0.035=57Ohms
RB is set at 1KOhm
R1 and R2
Vr2=Vbe+Vre=2+0.7=2.7V
Vr1=VCC-Vr2=17.3
R1/R2=Vr1/Vr2=6.407
Rb=1K
Rb=R1 in parallel with R2, keeping a 6.407 ratio between them
R1=8K
R2=1.24K
Rb=1.07KOhms
Xce=Re/10
c=1/2PI*(1k)(5.7)
=28uF
Xcc=Rc + Rload
c=1/2PI*(1k)(2K)
=80nF
Xcb=R1*R2/R1+R2...to note, I have used the frequency of 300Hz in this Calc as I believe . it sets the corner freq.
c=1/2PI*(300)(1K)
=530nF
I don't know what aspect of the design process is incorrect, but the output waveform seems to indicate that the capacitors are incorrectly sized to begin with, I am also not achieving a voltage gain of 15.
If anyone can point me in the right direction I will be very grateful.
Vin=0.6 Vout=3.863
Gain=approx. 6
If there is a way of uploading multisim files I will upload the circuit in its current form.
Here is a word document with some circuit images on.
https://www.physicsforums.com/attachments/68396
Rin=1KOhms
Rout=1KOhms
Voltage Gain=15
corner frequency=300Hz
specified Transistor is BC109BP
AC supply, 0.5V
DC supply 20V
supply frequency, not specified, I have assumed 1K
We have not been given guidance on this, so I am muddling through a few blogs, particularly;
http://ampdesigns.tripod.com/engg_stuff.html
So far my results have been far from satisfactory in virtually every sense.
The circuit that I have based my own on can be found on this link:
http://ampdesigns.tripod.com/engg_stuff.html
(I can't seem to upload images of my own circuit, any pointers on this subject matter greatly appreciated).
A few of my calculations:
Icq=Icpeak+Icmin=0.03+0.005=0.035A
Selection of Re
Vre=10% VCC=2V
Re=Vre/Icq=2/0.035=57Ohms
RB is set at 1KOhm
R1 and R2
Vr2=Vbe+Vre=2+0.7=2.7V
Vr1=VCC-Vr2=17.3
R1/R2=Vr1/Vr2=6.407
Rb=1K
Rb=R1 in parallel with R2, keeping a 6.407 ratio between them
R1=8K
R2=1.24K
Rb=1.07KOhms
Xce=Re/10
c=1/2PI*(1k)(5.7)
=28uF
Xcc=Rc + Rload
c=1/2PI*(1k)(2K)
=80nF
Xcb=R1*R2/R1+R2...to note, I have used the frequency of 300Hz in this Calc as I believe . it sets the corner freq.
c=1/2PI*(300)(1K)
=530nF
I don't know what aspect of the design process is incorrect, but the output waveform seems to indicate that the capacitors are incorrectly sized to begin with, I am also not achieving a voltage gain of 15.
If anyone can point me in the right direction I will be very grateful.
Vin=0.6 Vout=3.863
Gain=approx. 6
If there is a way of uploading multisim files I will upload the circuit in its current form.
Here is a word document with some circuit images on.
https://www.physicsforums.com/attachments/68396