Path: utzoo!attcan!uunet!tektronix!reed!nscpdc!sky
From: sky@nscpdc.NSC.COM (Sky Archuleta)
Newsgroups: sci.electronics
Subject: Re: DC to DC powersupplys
Message-ID: <1400@nscpdc.NSC.COM>
Date: 22 Nov 88 16:17:35 GMT
References: <500@unocss.UUCP>
Organization: National Semiconductor, Portland Development Center, Portland, OR
Lines: 42
In-reply-to: ca063@unocss.UUCP's message of 17 Nov 88 02:41:47 GMT
Posting-Front-End: GNU Emacs 18.46.13 of Fri Oct  7 1988 on nscpdc (berkeley-unix)

>    I've got a friend who wants to put a computer into his Van.  Now, he
>wants to run the system off the battery without going through an invertor,
>since the invertor generates a lot of heat and very heavy current draw.

>    The system needs +5V @ 5amps, +12V @ 1amp, and -12V @ 100mAs.  The +5
>and +12 are no problem, it's the -12.  Like, it's just not available
>on a normal 12v car batttery system.  So, any ideas?  

A quick look  through my DC/DC  converter goodie file  I find  several
converters that will  do the job. Since  your friend will  already  be
building some sort  of box and/or  board  to house  the  +5V  and +12V
regulators,   I assume  a board  or   box mounted converter  will   be
acceptable.

The following is a list of Vendors, part numbers and phone numbers for
devices that will meet the 100ma spec:

VENDOR		PHONE NO.	PART NO.	V in	I out@12V
---------------------------------------------------------------------
CALEX		415-932-3911	12S12.250	12	250 ma
				(PCB Mounted)

COMPUTER 	617-268-1170	H12S12/125W	12	125 ma
PRODUCTS			(PCB Mounted , 14.5VDC max input)

INTEGRATED	206-882-3100	MDP121212DB	12	125 ma
CIRCUITS		or	DIP121212DB	12	125 ma
INCORPORATED		(Different prices, Output cap required)

INTERNATIONAL	617-782-3331	DRS1212		12	160 ma
POWER DEVICES

TOTAL POWER 	617-453-7272	UM213 or UM214	12	125 ma
INTL. INC.

---------------------------------------------------------------------
Hope this helps!

Sky Archuleta		     _   /| 	    	* I'm sorry, but *
National Advanced Systems    \'o_O  	    	* my karma  just *
Portland Development Center    (^) AAAACKKK!    * ran  over your *
UUCP: sky@nscpdc.nsc.com        U  THHHPPPT!    *     dogma!     *