PCB power planes? - sci.electronics.design

Message from discussion PCB power planes?

Joerg

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More options Jul 8 2008, 2:28 am

Newsgroups: sci.electronics.design

From: Joerg <notthisjoerg...@removethispacbell.net>

Date: Mon, 07 Jul 2008 14:28:39 -0700

Local: Tues, Jul 8 2008 2:28 am

Subject: Re: PCB power planes?

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Scott Seidman wrote:
> Joerg <notthisjoerg...@removethispacbell.net> wrote in news:Qguck.17293
> $Ri.1...@flpi146.ffdc.sbc.com:

>> If you know a good digital-pot bargain let us know. But not from a
>> company that starts with "M" :-)

> http://www.analog.com/en/digital-to-analog-converters/digital-
> potentiometers/products/index.html

> Analog devices, about $0.60 each in quantity, probably come to about 2
> bucks for each pole pair on a UAF42. Still not cheap, but not out of the
> realm of possibility.

That would be way out of league for most of my designs. Another option
is to servo a dual FET as a variable resistor. If you can get one, that
is. Man, that so so easy during the days when the SD5400 was cheap and
available. Done it many times.

> I'm not thrilled with some of the "M" stuff either.

It's the only company where I only did design-outs. Mostly because of
part unavailability.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

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