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From: Mike Monett
X-Mailer: Mozilla 2.02 (Win16; I)
Subject: Re: Amplifying stage with *negative* Voltage gain??
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Date: Mon, 09 Dec 2002 06:35:01 -0800
NNTP-Posting-Date: Mon, 09 Dec 2002 06:35:02 EST
Organization: Bell Sympatico
Fred Bloggs wrote:
> Mike Monett wrote:
> > What - no SPICE model posted yet? Gee, Blogsy, some might wonder if
> > you actually know how.
> Lessee- you enter a schematic and press ANALYSIS TRANSIENT button...the
> complexity is overwhelming- and with a one-transistor, three-resistor,
> and two-cap circuit no less.
Well, it's a bit more complicated than that. First you need to decide what to
include and what to exclude from your model. This allows you to focus on the
essential elements of the problem and see how variations affect the results.
SPICE allows you to quickly compare different methods of solving a problem
without the problems encountered building and debugging hardware. When it's
time to build the hardware, you have a much clearer idea of how it should
work. For example, see my review of various methods of reducing power supply
noise and ripple at
SPICE is a marvellous tool for gaining insight into circuit behavior. It is
far better than slogging through pages of differential equations that really
don't give a broad picture of what a circuit is doing. In fact, this is how I
got the ideas for about half of my patents.
> > Ah, the freedom and enjoyment of bringing your own creations to life.
> > I wouldn't trade it for anything else.
> Best wishes for your endeavor...
Thank you, Fred.
> I will take the McDonald's job over having the likes of you as a
> co-worker any day. I must be riding a Shetland pony because even a
> street sweeper who works for his living is deserving of respect in my view.
I'm sure we would be great friends. I appreciate your view that everyone is
deserving of kindness and respect.
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