Hi Ted
Via separate email, I'm sending an easier to read version of my amplifier s=
chematics.
If you need help, please let me know.
Pete Rowe

--- On Wed, 12/15/10, Stephen Hammond  wrote:

From: Stephen Hammond 
Subject: RE: Amplifier
To: psnlist@..............
Date: Wednesday, December 15, 2010, 8:37 AM

The original PSN amp by Pete Rowe can be found at
http://pw2.netcom.com/~shammon1/equip.htm#Electronics and is simple to
build and works very well. You can substitute the op-27 for any low
noise op amps if you cannot find them. I have used this design for more
than 10 years and the only area I have trouble with is getting leveling
pot in the filter stage to work correctly. Look for two sheets on this
web page, one is the pre amp that is mounted near the seismograph and
then connected via low noise cable to the filter board mounted near the
A/D and PC.=20
Regards, Steve Hammond PSN San Jose, Aptos CA.=20

-----Original Message-----
From: psnlist-request@..............
[mailto:psnlist-request@............... On Behalf Of Ted Channel
Sent: Wednesday, December 15, 2010 7:43 AM
To: psnlist@..............
Subject: Amplifier



Hi=A0 Folks.=A0=A0=A0I have use only Larry's Amp boards and I have been ver=
y
happy=20
with them.=A0 =A0 I have tried to build my own, but never had much luck.=A0=
=A0=A0I

wish to try again.
Does anyone have a simple, yet proven to work, amp schematic?=A0 =A0 I have
seen=20
some in the past, but I am looking for one, which is known to work first

time out.

I know I will need to order all the parts, so a parts list would also be

helpful.=A0=A0=A0Especially, on how to power the op amps, and necessary
filter.

Thanks, Ted=20

__________________________________________________________

Public Seismic Network Mailing List (PSNLIST)

To leave this list email PSNLIST-REQUEST@.............. with=20
the body of the message (first line only): unsubscribe
See http://www.seismicnet.com/maillist.html for more information.

__________________________________________________________

Public Seismic Network Mailing List (PSNLIST)

To leave this list email PSNLIST-REQUEST@.............. with=20
the body of the message (first line only): unsubscribe
See http://www.seismicnet.com/maillist.html for more information.

[ Top ] 
[ Back ] 
[ Home Page ] 
Hi Ted
Via separate email, I'm sending an =
easier to read version of my amplifier schematics.
If you need help, ple=
ase let me know.
Pete Rowe

--- On Wed, 12/15/10, Stephen Hammo=
nd <shammon1@.............> wrote:

From: Stephen Hammond <shammon1@.............>
Subject: R=
E: Amplifier
To: psnlist@..............
Date: Wednesday, December 15,=
 2010, 8:37 AM

The original PSN amp by Pete=
 Rowe can be found at
http://pw2.netcom.com/~shammon1/equip.h=
tm#Electronics and is simple to
build and works very well. You can s=
ubstitute the op-27 for any low
noise op amps if you cannot find them. I=
 have used
 this design for more
than 10 years and the only area I have trouble wit=
h is getting leveling
pot in the filter stage to work correctly. Look fo=
r two sheets on this
web page, one is the pre amp that is mounted near t=
he seismograph and
then connected via low noise cable to the filter boar=
d mounted near the
A/D and PC. 
Regards, Steve Hammond PSN San Jose, =
Aptos CA. 

-----Original Message-----
From: psnlist-request@..............
[mailto:psnlist-request@..............] On Behalf Of Ted Ch=
annel
Sent: Wednesday, December 15, 2010 7:43 AM
To: psnlist@..............
Subject: Amplifier



Hi 
 Folks.   I have use only Larry's Amp boards and I have been=
 very
happy 
with them.    I have tried to build my own, bu=
t never had much luck.   I

wish to try again.
Does=
 anyone have a simple, yet proven to work, amp schematic?    I ha=
ve
seen 
some in the past, but I am looking for one, which is known t=
o work first

time out.

I know I will need to order all the pa=
rts, so a parts list would also be

helpful.   Especia=
lly, on how to power the op amps, and necessary
filter.

Thanks, T=
ed 

__________________________________________________________
Public Seismic Network Mailing List (PSNLIST)

To leave this list e=
mail PSNLIST-REQUEST@.............. =
with 
the body of the message (first line only): unsubscribe
See http://=
www.seismicnet.com/maillist.html for more information.

_________=
_________________________________________________

Public Seismic Net=
work Mailing List (PSNLIST)

To leave this list email PSNLIST-REQUEST@.............. with 
the body of=
 the message (first line only): unsubscribe
See http://www.seismicnet.com/mai=
llist.html for more information.