PSN-L Email List Message
Subject: Amplifier gains
From: "Ted Channel" tchannel@............
Date: Fri, 17 Dec 2010 05:50:26 -0700
I was telling a friend, I would like to try to build my own =
amplifier/filter board. He is knowledgeable in electronic, and I am =
not. So he said he would help. His first question was about gain.
I told him I did not know what gain we should target, but some of the =
schematics indicated a gain of 2000. He suggested including a =
selector knob, with several gain choices.
If we were to try is approach, what would be some of the typical values =
for gain? 500, 1000, 1500, 2000?
I know it depends on other factors, but I am trying to narrow it down. =
We have a sensor with a strong coil, strong magnets, and are using =
Chris's magnet assembly on a 20 second Lehman.
On Larry's board, which I love, works perfectly, the gain is selectable =
from 200 to 9500?............I use it as it is shipped, so I don't know =
what the gain is........but it is perfect for my sensors.
Somewhere I have seen an amplifier with a selector knob, for gain, but I =
can't find it.
Thanks,
I was telling a friend, I would like to =
try to=20
build my own amplifier/filter board. He is knowledgeable in=20
electronic, and I am not. So he said he would =
help. His=20
first question was about gain.
I told him I did not know what gain we =
should=20
target, but some of the schematics indicated a gain of 2000. =
He=20
suggested including a selector knob, with several gain=20
choices.
If we were to try is approach, what =
would be some=20
of the typical values for gain? 500, 1000, 1500,=20
2000?
I know it depends on other factors, but =
I am trying=20
to narrow it down. We have a sensor with a strong coil, =
strong=20
magnets, and are using Chris's magnet assembly on a 20 second=20
Lehman.
On Larry's board, which I love, works =
perfectly,=20
the gain is selectable from 200 to 9500?............I use it as it =
is=20
shipped, so I don't know what the gain is........but it is perfect for =
my=20
sensors.
Somewhere I have seen an amplifier with =
a selector=20
knob, for gain, but I can't find it.
Thanks,
Ted
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