You can buy the LM2576A from www.digikey.com in quantities of one.  You
will pay a premium in quantities of one.

    I am also very interested in making a switching regulator using a pic
12c508.  I was thinking of switching the DC input of 40Vdc at a frequency of
50Khz using a SCR.  Then by using a large filtering cap on the output.

-----Original Message-----
From: Tjaart van der Walt <tjaart@WASP.CO.ZA>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: Thursday, December 17, 1998 12:33 AM
Subject: Re: BUCK REGULATOR


WIL REEDER wrote:
>
> Hi
>
> I am working on a low power LCD video monitor for my weekend getaway.
Solar
> and wind power into 12v batteries. I would like to run this 6 volt LCD
> monitor off 12v and avoid the losses of a linear regulator or the inverter
> and wall wart. Lm2576A comes to mind but are not available onesies in this
> town. I need about 5 watts.
> Has anyone made a switchmode regulator with a c/f84 or a c508?? I probably
> could use a few of these around the claim and an adjustable model would be
> a hot item.
> Any Ideas?
> Thanks

I also have a similar question for the SMPS guru's. I've
been asked to re-think a design where a PIC get its power
from a 100V-150V DC line. How the hell does one drop
around 90V DC without creating an oven? I don't want to
use light bulbs as it is a potentially dangerous device.

--
Friendly Regards          /"\
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