PSN-L Email List Message

Subject: RE: Power supply questions
From: "John D Nelson" jnelson@.................
Date: Fri, 11 Mar 2005 08:12:34 -0600


There is a lot of variance in "walwart" supplies.  Some are AC out, some
DC and a few DC regulated.  Typically the dc ones are pretty poorly
regulated due to really cheap transformers.  I always make the
assumption that the DC ones are pretty much unfiltered DC and add
filtration and regulation accordingly.  It is a good idea to check them
to see if the rated current capability is really there by loading them
down in a test. =20

=20

John Nelson

=20

________________________________

From: psn-l-request@.............. [mailto:psn-l-request@...............
On Behalf Of Randy
Sent: Thursday, March 10, 2005 9:24 PM
To: psn-l@..............
Subject: Power supply questions

=20

Has anyone operated the PSN amp filter on 5 - 6 volts?

=20

I recall someone on the list using 2 wall wart power supplies back to
back for the positive and negative supplies.  Did you filter or
stabilize any further and if so how?

=20

Thank you for any advice.

=20

Randy













There is a lot of variance in = “walwart” supplies.  Some are AC out, some DC and a few DC regulated.  = Typically the dc ones are pretty poorly regulated due to really cheap transformers.  = I always make the assumption that the DC ones are pretty much unfiltered DC and = add filtration and regulation accordingly.  It is a good idea to check = them to see if the rated current capability is really there by loading them down in = a test. 

 

John = Nelson

 


From: psn-l-request@.............. [mailto:psn-l-request@............... = On Behalf Of Randy
Sent: Thursday, March 10, = 2005 9:24 PM
To: = psn-l@..............
Subject: Power supply = questions

 

Has anyone operated the PSN amp filter on 5 - 6 = volts?

 

I recall someone on the list using 2 wall wart power supplies back to back for the positive and negative supplies.  Did = you filter or stabilize any further and if so = how?

 

Thank you for any = advice.

 

Randy


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