[rescue] Perverse Question
mcguire at neurotica.com
Sat Jun 7 18:46:54 CDT 2003
On Saturday, June 7, 2003, at 07:31 PM, Mike Hebel wrote:
> There is no 3.3V so yes you will need a regulator.
> The DC current output per the sheet is:
> +5V == 9A
> +12V == 2A
> -12V == .1A
> This data is for the Classic/LX power supply -Fuji PEX643-30 model.
> My advice would be obviously to take something like an LM7803(?) and
> put in on one of the +5V lines to get your 3.3V.
Is there a 3.3V member in the LM7800 family? I've not seen that.
I would suggest something like Linear Technology's LT1085 for a
...but watch out for heat. A switching regulator would be far
superior in this application, something like the LTC1148-3.3:
These chips and their supporting components are usually available in
small quantities through suppliers like DigiKey.
Dave McGuire "I've grown hair again, just
St. Petersburg, FL for the occasion." -Doc Shipley
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