LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #14   Report Post  
Old September 1st 03, 10:52 PM
Tarmo Tammaru
 
Posts: n/a
Default


"Richard Clark" wrote in message
...
On Mon, 1 Sep 2003 14:12:08 -0400, "Tarmo Tammaru"
wrote:


In general, the addition of negative feedback to change the output

impedance
does not change the dynamic range.


Hi Tam,

H.W. Bode, of Bell Labs, developed a body of work that proves you
completely wrong. Negative feedback enhances every facet of amplifier
design and to claim otherwise is wholly misinforming.

73's
Richard Clark, KB7QHC


Hi Richard,

Everything, except the output dynamic range. Please go through my numbers.
The equation I gave is for the point at which the amplifier goes non linear,
and there actually is no feedback. There is a large error voltage at the
input, but the amp can't do anything about it because it is already in
saturation. For a 5V input/output and a 1K load the output terminal of the
op amp is already at VCC. A more practical example might have been a 13.8
volt power supply regulator running off 16 volts, with a current sensing
resistor in series with the output. Anyway, it was a rainy afternoon kind
of thing.

Tam/WB2TT



 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
A Subtle Detail of Reflection Coefficients (but important to know) Dr. Slick Antenna 199 September 12th 03 10:06 PM
Re-Normalizing the Smith Chart (Changing the SWR into the same load) Dr. Slick Antenna 98 August 30th 03 03:09 AM
Mother Nature's reflection coefficient... Peter O. Brackett Antenna 8 August 28th 03 06:17 AM


All times are GMT +1. The time now is 01:24 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017