2. Amplitude of the output voltage should be in the range 0.9 Vpp
and1.1 V
pp for the input signals with amplitudes stated above.
3. Output impedance of the ampli¯er should be smaller than 2 k.
4. The circuit should be able to amplify the signals having frequencies
between 500 Hz and 10000 Hz.
The amplifer designed should be a single transistor amplifer in the
common-emitter form for BJT amplifers or common-source form for the
FET amplifers. However, it can be used extra transistors for making the
amplifer an adjustable gain amplifer.
And the AGC should be composed of 2 parts adjustable gain part and
feedback part.
Please help me urgently to design this problem. Thanks...
If you're waiting for us to do your homework for you, you're going to be
waiting quite awhile. On the other hand, if you've had a good try at it
and are just stuck on one or two things, your odds are better.
Posting from a real email account (not Gmail or hotmail) will improve
your odds further.
What have you actually done so far?
Cheers,
Phil Hobbs
try posting to sci.electronics.homework
martin
Hint #2: Have that JFET handle AC only, no DC, in order to offer a
reasonably linear resistance.
Hint #3: With a high load impedance, silicon diodes conduct enough to
offer significant rectification much below 0.7 volts.
Consider other topologies than you have so far. For example, consider
using the FET and a resistor to form a voltage divider, which then
feeds an amplifier stage. There are many ways you can solve this
problem. Don't invest too heavily in just one at first. Step back
from the problem and think of some different ways to do it, and then
weigh the pros and cons of each.
More later, after you mull that over.
Cheers,
Tom
I love it!
Bob
Just to make explicit what others did not...
"sci.electronics.homework" does not exist.
In these forums, people are very unwilling to do students' homework for
them. Also, remember that your teacher may be here, too.
mav...@gmail.com wrote:
> Hello,
> I can not handle a problem which is about AGC. Please help me about
> that. The conditions are;
< snip >
Design consultancy is easy to obtain. It involves paying money though.
Graham
> Hello,
> I can not handle a problem which is about AGC. Please help me about
> that.
Read fast:
http://www.google.com/search?q=%22automatic+gain+control%22+%2Bcircuit
Good Luck!
Rich
Also, apply some of the drain's AC voltage to the gate. You want to bring
the change of the RDS(on) with AC voltage near to zero.
--
--
kens...@rahul.net forging knowledge