Please Help me urgently
 

Hello,
I can not handle a problem which is about AGC. Please help me about
that. The conditions are;
It is required to design and implement an AGC circuit
with the following specifcations:
1. Amplitude of the input voltage may vary between 10 mVpp and 50 mVpp.

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...

Please Help me urgently
 

mavihot wrote:
Hello,
I can not handle a problem which is about AGC. Please help me about
that. The conditions are;
It is required to design and implement an AGC circuit
with the following specifcations:
1. Amplitude of the input voltage may vary between 10 mVpp and 50 mVpp.

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...

1. Read your textbook
2. Ask your prof
3. Engage your brain

Good luck.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Posting from Google? See http://cfaj.freeshell.org/google/

"Applied Control Theory for Embedded Systems" came out in April.
See details at http://www.wescottdesign.com/actfes/actfes.html

Please Help me urgently
 

"mavihot" wrote in message
ups.com...
Hello,

I can not handle a problem which is about AGC. Please help me about
that. The conditions are;
It is required to design and implement an AGC circuit
with the following specifcations:

1. Amplitude of the input voltage may vary between 10 mVpp and 50 mVpp.

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...
==========================================
This sounds like a class assignment for an electronics design course.

The circuit should be able to amplify the signals having frequencies
between 500 Hz and 10000 Hz.

OK, its an "audio frequency" related amplifier design. Additional
requirement
that the single transistor amplifier be a common-emitter form for BJT
amplifiers
or common-source form for FET amplifier designs

3. Output impedance of the amplifier should be smaller than 2 k ohms*.

Speakers are 4, 8 or 16 ohm loads; 600 ohms is fairly standard in broadcast;
Original crystal set headphones (Trimm - vintage WW2) were 2000 ohms

Amplitude of the output voltage should be in the range 0.9 Vpp and 1.1 Vpp
for the input voltage that may vary between 10 mVpp and 50 mVpp.

Standard amplifier with an AGC circuit - added requirements that the AGC
should have
both an adjustable gain and feedback control.

Start with Google

Please Help me urgently
 

"mavihot" wrote in message
ups.com...
Hello,
I can not handle a problem which is about AGC. Please help me about
that. The conditions are;
It is required to design and implement an AGC circuit
with the following specifcations:
1. Amplitude of the input voltage may vary between 10 mVpp and 50 mVpp.

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...
=========================================
Sad part is that I used a Google search phrase "AGC amplifier"
and found design almost to these specifications in less than 10 seconds.

We're doomed

Please Help me urgently
 

On 27 May 2006 05:31:47 -0700, "mavihot" wrote:

Hello,
I can not handle a problem which is about AGC. Please help me about
that. The conditions are;
It is required to design and implement an AGC circuit
with the following specifcations:
1. Amplitude of the input voltage may vary between 10 mVpp and 50 mVpp.

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...


Slept through class one to many times?


I've learned that I don't suffer from insanity, I enjoy it! (The hell with my X-wife!)

Remove the x for e-mail reply
www.outdoorfrontiers.com
www.SecretWeaponLures.com
A proud charter member of "PETAF", People for Eating Tasty Animals and Fish!!!

Please Help me urgently
 

g. beat @ wrote:
"mavihot" wrote in message

Please help me urgently to design this problem. Thanks...
=========================================
Sad part is that I used a Google search phrase "AGC amplifier"
and found design almost to these specifications in less than 10 seconds.

We're doomed

At best, the next generation of airplanes will be designed by google. At
worst, the engineers won't even know how to find the answers there.

Roy Lewallen, W7EL

Please Help me urgently
 

"Roy Lewallen" wrote in message
...
g. beat @ wrote:
"mavihot" wrote in message Please help me urgently to
design this problem. Thanks...
=========================================
Sad part is that I used a Google search phrase "AGC amplifier"
and found design almost to these specifications in less than 10 seconds.

We're doomed

At best, the next generation of airplanes will be designed by google. At
worst, the engineers won't even know how to find the answers there.

Roy Lewallen, W7EL

Roy, If that is true - let's hope your designs (and a few other true
workbench designers) -
comes up first on the Google list.

gb

Please Help me urgently
 

On 2006-05-27, mavihot wrote:

Please help me urgently to design this problem. Thanks...

Why do East Asian requests for help always come with "urgent!!" on them?
I've seen plenty of requests that would have gotten answers but for
the demanding tone.

--
Ben Jackson

http://www.ben.com/

Please Help me urgently
 

On Sat, 27 May 2006 16:38:17 -0500, Ben Jackson wrote:

On 2006-05-27, mavihot wrote:

Please help me urgently to design this problem. Thanks...

Why do East Asian requests for help always come with "urgent!!" on them?
I've seen plenty of requests that would have gotten answers but for
the demanding tone.

Hi Ben,

Two things wrong with this:
1) He's in Ankara (West, not East);
B) We get the same the same urgent requests from American students in
Florida (and all points north and west of there too).

The end of term is coming up.

73's
Richard Clark, KB7QHC

Please Help me urgently
 

Roy Lewallen wrote:

g. beat @ wrote:

"mavihot" wrote in message
Please help me urgently to design this problem. Thanks...
=========================================
Sad part is that I used a Google search phrase "AGC amplifier"
and found design almost to these specifications in less than 10 seconds.

We're doomed


At best, the next generation of airplanes will be designed by google. At
worst, the engineers won't even know how to find the answers there.

Roy Lewallen, W7EL

I see the day coming when an engineer will think a Schmidt trigger is a
component of an UZI.

Please Help me urgently
 

Attend class, stay awake, take notes, study, pass simple exam question.

Getting the answer here or from Google is called plagiarism. You get an
'F' if the instructor finds out.


mavihot wrote:

Hello,
I can not handle a problem which is about AGC. Please help me about
that. The conditions are;
It is required to design and implement an AGC circuit
with the following specifcations:
1. Amplitude of the input voltage may vary between 10 mVpp and 50 mVpp.

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...

Please Help me urgently
 

Dave wrote:

Roy Lewallen wrote:

g. beat @ wrote:

"mavihot" wrote in message
Please help me urgently to design this problem. Thanks...
=========================================
Sad part is that I used a Google search phrase "AGC amplifier"
and found design almost to these specifications in less than 10 seconds.

We're doomed



At best, the next generation of airplanes will be designed by google.
At worst, the engineers won't even know how to find the answers there.

Roy Lewallen, W7EL


I see the day coming when an engineer will think a Schmidt trigger is a
component of an UZI.


I thought it was a turn-on for certain Germans. My mistake.

tom
K0TAR

Please Help me urgently
 

On 2006-05-27, Richard Clark wrote:

Two things wrong with this:
1) He's in Ankara (West, not East);
B) We get the same the same urgent requests from American students in
Florida (and all points north and west of there too).

I) I guess if I'm going to generalize I'd better pay more attention.

Two) I still think there's a cultural/language issue going on. I get
questions all the time from people about projects on my web page.
Almost all of the ones from people with Chinese/Indian sounding
names (hard to tell where they're from if they don't volunteer it and
they're using Yahoo mail!) are demanding. Here's the first example
in my inbox, although this one is relatively tame:

] i'm very interesting about this project because i want to use this simple card
] for a simple interface with the hardware outside for example for a simple
] input/output. i want to ask about the schematic of this project. Can you help
] me for this. i wait your answer as soon as possible.

In contrast, American students seem to just cut and paste requirements
from the handout. ;-)

--
Ben Jackson

http://www.ben.com/

Please Help me urgently
 

"Dave" wrote in message
...
Roy Lewallen wrote:

g. beat @ wrote:

"mavihot" wrote in message
Please help me urgently to design this problem. Thanks...
=========================================
Sad part is that I used a Google search phrase "AGC amplifier"
and found design almost to these specifications in less than 10 seconds.

We're doomed


At best, the next generation of airplanes will be designed by google. At
worst, the engineers won't even know how to find the answers there.

Roy Lewallen, W7EL

I see the day coming when an engineer will think a Schmidt trigger is a
component of an UZI.

I thought it was the 'killing button' of an ME109 LOL

Please Help me urgently
 

"Ben Jackson" wrote:
I still think there's a cultural/language issue going on.

I once worked for Oki Semiconductor and received a manual that had
been translated from Japanese to "English" by a Japanese Engineer.
One sentence translated as: "The user functions are functions that
are used by the user." I wondered what had gotten lost in that
translation.
--
73, Cecil http://www.qsl.net/w5dxp

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On Sat, 27 May 2006 21:53:06 -0500, Ben Jackson wrote:

In contrast, American students seem to just cut and paste requirements
from the handout. ;-)

Hi Ben,

My professional page got me inquiries from a private investigation of
the TWA flight 800 crash. But I got something in return, a graphic
chart of all the flight control settings from take-off until the
lights went out. The questions I got from the lawyer went deeper than
any student's final project.

73's
Richard Clark, KB7QHC

Please Help me urgently
 

Dave wrote:
Attend class, stay awake, take notes, study, pass simple exam question.

Getting the answer here or from Google is called plagiarism. You get an
'F' if the instructor finds out.


It's a technology race, and the instructors are well ahead.

Dissertations can now be scanned by Google-type software that looks for
copying. Whatever literature resources the student could have used, the
department has access to the same and more.

A friend told of a recent example of a final year dissertation on 2.4GHz
LNA design. The software easily found the un-referenced Agilent
Application Note that the student had copied. They had already been
warned...



--
73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek

Please Help me urgently
 

Dear Ian:
The worst case that I encountered was the finding of a direct copy of my
own work in a student's thesis! I was not amused!

On the other hand, I recently was faculty advisor on a thesis of
exceptional quality and originality. The student had performed some
valuable and original work with nano-technology. The student's care in
crediting each and every idea that was used and every person who helped
(including skilled technicians) was a model of what should be done. The
best students know, and acknowledge, their antecedents, mentors and then
delineate what they have done that is new.

I offer the above as an example that not all is lost.

Warm regards, Mac N8TT


--
J. Mc Laughlin; Michigan U.S.A.
Home:
"Ian White GM3SEK" wrote in message
...
Dave wrote:
Attend class, stay awake, take notes, study, pass simple exam question.

Getting the answer here or from Google is called plagiarism. You get an
'F' if the instructor finds out.


It's a technology race, and the instructors are well ahead.

Dissertations can now be scanned by Google-type software that looks for
copying. Whatever literature resources the student could have used, the
department has access to the same and more.

A friend told of a recent example of a final year dissertation on 2.4GHz
LNA design. The software easily found the un-referenced Agilent
Application Note that the student had copied. They had already been
warned...



--
73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek

Please Help me urgently
 

J. Mc Laughlin wrote:
The worst case that I encountered was the finding of a direct copy
of my own work in a student's thesis! I was not amused!

Had the same happen to me: read an article in a German radio magazine
that was written exactly as I would have... no, dammit, it was written
exactly as I already HAD, in a different magazine!

On the other hand, I recently was faculty advisor on a thesis of
exceptional quality and originality. The student had performed some
valuable and original work with nano-technology. The student's care in
crediting each and every idea that was used and every person who helped
(including skilled technicians) was a model of what should be done.
The best students know, and acknowledge, their antecedents, mentors and
then delineate what they have done that is new.

I offer the above as an example that not all is lost.

Oh, indeed it isn't. The friend who told me about the copy-detection
software had spent 20 years of his life as a rock musician, but is now
headed for a First Class honours degree in RF Engineering. Needless to
say, he's an active ham.


--
73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek

Please Help me urgently
 

J. Mc Laughlin wrote:
Dear Ian:
The worst case that I encountered was the finding of a direct copy of my
own work in a student's thesis! I was not amused!

On the other hand, I recently was faculty advisor on a thesis of
exceptional quality and originality. The student had performed some
valuable and original work with nano-technology. The student's care in
crediting each and every idea that was used and every person who helped
(including skilled technicians) was a model of what should be done. The
best students know, and acknowledge, their antecedents, mentors and then
delineate what they have done that is new.

I offer the above as an example that not all is lost.

Warm regards, Mac N8TT


Glad to hear there is still integrity in some circles.

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Hey Dave.... From where do you suppose the instructor got the question?
Besides we really don't know if the class is in EE or on computer web
sites and the internet!.....WB3HUH

Please Help me urgently
 

George wrote:
Hey Dave.... From where do you suppose the instructor got the question?
Besides we really don't know if the class is in EE or on computer web
sites and the internet!.....WB3HUH


Simply "getting" the answer from google is not wrong or unethical - any
more than looking up the answer in a textbook.

It is what you do with it after you get it. that is the issue. I do my
research in textbooks, reference volumes, and google. It's all good. As
long as it is correct.

Some of this creeping codgerism sounds like the old rants against
calculators..... and I'll bet slide rules before that! ;^)

- 73 de Mike KB3EIA -