Yeah! Give me real smoke any day of the week!

(But I admit, a good simulator is a wonderful tool!)

Fr. Tom McGahee

----- Original Message -----
From: "Tom Messenger" <krist@THEGRID.NET>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Sunday, April 07, 2002 3:11 PM
Subject: Re: [PIC] [EE]: Improved LDO regulator circuit


> At 12:56 PM 4/7/02 -0400, you wrote:
> >By the way, I fired up Electronics Workbench and simulated
> >the circuit.
>
> -snip-
>
> >but I think
> >it is about time for me to find a better tool.
> >
> >Fr. Thomas McGahee
>
> I'd recommend LT SwitcherCad which despite the name, is a full spice
> implementation. Plus, it really does switchers nicely too.  I've mentioned
> this program several times of late and someone might well get the
> impression that I'm recommending it in place of circuit testing with real
> parts. I'm not.
>
> It is a very good tool to try out many ideas and see which ones look
> promising.  For beginners, if their circuit doesn't work like they thought
> it would, sometimes they are at a loss to understand what's going on. But
> with a spice run, you can not only see ac and dc operating points of any
> and all voltages but it shows currents as well.  This can be *very*
> illuminating when modeling switchers as it lets you see the peak to peak
> ripple current your circuit will run at and tells you what you can get
away
> with regarding inductor and capacitor selection. Not to mention more
> troubling parameters like esr, etc.
>
> But by all means, it is only a starting point. There's no substitute for
> real parts running from real electricity. Plus the fun of generating real
> heat burning real fingers. :)
>
> Best regards,
> Tom M.
>
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