AVR-Chat

I use Liner Techs SwitcherCad (free to download and use) to simulate the
power supply. It seems to work great for this. It does make a great deal of
difference when you select a low ESR cap instead of a cheapo when it comes
to noise filtering. I just got done with a +/-5, +3.3v supply using their
spice software. I found a diode that was being abused by looking at the
current flowing in that part using SwitcherCad. I have been using their
regulators for a number of years and am very satisfied with them. They seem
to require fewer parts to get the job done.

Al Welch

-----Original Message-----
From: Mike Murphree [mailto:mike@tropo.org]
Sent: Friday, February 13, 2004 9:59 AM
To: AVR-Chat@yahoogroups.com
Subject: RE: [AVR-Chat] Off topic - general electronics question


Al Welch said:
> Digikey shows them for under $7 in the USA. I note there is a -5 for
> fixed 5 volt output and a no dash for adjustable output.
> I think you can buy direct from Linear Technology using a credit card as
> well.

I would advise anyone using Linear Technology's regulators to study the
datasheets closely first.  Some of their low-noise regulators that I used
on my last project had very specific rules regarding capacitor types and
values else they won't behave as advertised...

Mike






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