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<DIV>+1</DIV>
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<DIV>In systems where there is, say, a 24VDC power bus and you need some
regulated 5VDC somewhere, these things are lifesavers. <A
title=http://www.digikey.com/product-detail/en/PT5101N/PT5101N-ND/210844
href="http://www.digikey.com/product-detail/en/PT5101N/PT5101N-ND/210844">http://www.digikey.com/product-detail/en/PT5101N/PT5101N-ND/210844</A>
$17 seems like a lot for a drop-in replacement for a 7805 voltage regulator,
until you realize that the sink/fan/board real estate/ventilation holes/etc to
remove the heat from the 7805 would cost way more than that. </DIV>
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<DIV><FONT size=3
face=Calibri>----------------------------------------</FONT></DIV>
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<DIV style="font-color: black"><B>From:</B> <A title=anders.k.nelson@gmail.com
href="mailto:anders.k.nelson@gmail.com">Anders Nelson</A> </DIV>
<DIV><B>Sent:</B> Monday, January 07, 2013 11:47 AM</DIV>
<DIV><B>To:</B> <A title=dorkbotsf-blabber@dorkbot.org
href="mailto:dorkbotsf-blabber@dorkbot.org">Dorkbot Dorkbot</A> ; <A
title=noisebridge-discuss@lists.noisebridge.net
href="mailto:noisebridge-discuss@lists.noisebridge.net">noisebridge-discuss@lists.noisebridge.net</A>
</DIV>
<DIV><B>Subject:</B> [dorkbotsf-blabber] DC-DC Power conversion - Cheapish
finds!</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">Hey
all,
<DIV> </DIV>
<DIV>
<DIV>I found some awesome DC-DC non-isolated convertors on Digikey, perhaps you
can benefit from my toils in their search fields. They are all really compact
and handle a buttload of current. Input and output voltage ranges vary, but
these were the cheapest and most available units I found.</DIV>
<DIV> </DIV>
<DIV>You may ask "Why would I pay ten bucks for a switching convertor when I can
pay fifty cents for an LDO?" The answer is heat dissipation and efficiency. If
you don't want to burn people/things and/or literally reduce your battery life
by half (in the case of 12v -> 6v conversion), you should use a
switcher.</DIV>
<DIV> </DIV>
<DIV>-3A: <A
href="http://www.digikey.com/product-detail/en/PT6304N/PT6304N-ND/278552">http://www.digikey.com/product-detail/en/PT6304N/PT6304N-ND/278552</A></DIV>
<DIV> </DIV>
<DIV>-10A: <A
href="http://www.digikey.com/product-detail/en/OKR-T%2F10-W12-C/811-2180-ND/2199630">http://www.digikey.com/product-detail/en/OKR-T%2F10-W12-C/811-2180-ND/2199630</A></DIV>
<DIV> </DIV>
<DIV>-6A: <A
href="http://www.digikey.com/product-detail/en/OKR-T%2F6-W12-C/811-2179-ND/2199629">http://www.digikey.com/product-detail/en/OKR-T%2F6-W12-C/811-2179-ND/2199629</A></DIV>
<DIV> </DIV>
<DIV>-3A: <A
href="http://www.digikey.com/product-detail/en/OKI-T%2F3-W32P-C/811-2287-1-ND/2708573">http://www.digikey.com/product-detail/en/OKI-T%2F3-W32P-C/811-2287-1-ND/2708573</A></DIV>
<DIV> </DIV>
<DIV>And here are some enclosures sized well to protect them:</DIV>
<DIV> </DIV>
<DIV><A
href="http://www.boxenclosures.com/category/category_product.html?cats__id=612">http://www.boxenclosures.com/category/category_product.html?cats__id=612</A></DIV>
<DIV> </DIV>
<DIV>You can, of course, build your own DC-DC convertor much cheaper. But when
you haven't the time these can save your potato.</DIV>
<DIV> </DIV>
<DIV>=]</DIV>
<DIV>--<BR>Anders Nelson<BR><BR>+1 (517) 775-6129<BR><BR><A
href="http://www.erogear.com">www.erogear.com</A></DIV></DIV>
<P>
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