See?!!  That is exactly why I love this group.

Thanks.

-Mario

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf
Of Denny Esterline
Sent: Saturday, August 27, 2005 6:21 PM
To: Microcontroller discussion list - Public.
Subject: Re: [EE] Re: 5v and 3.3v power supply


> Yes, my question was a bit unclear.  Here's the deal:
>
> I have one of those breadboards with the power supply built into it.  
> It has 2 variable outputs and a ground output.  The first variable is 
> 0 to
> +15 and the other is 0 to -15.  I currently have it setup so that it
> feeds my 5v chips (pic and other logic), but needed to supply 3.3v to 
> a new chip I want to use along with the others, and for the 
> prototyping (now), I wanted to get 3.3v from the 5v output in the 
> breadboard and wanted to know if anyone had something similar setup, 
> whether it was a voltaget regulator chip or a simple zener.
>

I can give you one better. Adjust your negative supply to 3.3 volts,
adjust your positive suppy to 1.7 volts. Now use the V- output as ground
(0v), the original common as +3.3v and the positive supply as 5v.

No parts requred - must be an ideal solution :-)

-Denny

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