Oops, this was sent by mistake.

As you can see, I had nothing to add to the thread ;-)

Tal

> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Tal
> Sent: Sunday, June 15, 2003 8:31 AM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [EE] Bypass Capacitors
>
>
> > -----Original Message-----
> > From: pic microcontroller discussion list
> > [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Marc Nicholas
> > Sent: Saturday, June 14, 2003 10:31 PM
> > To: PICLIST@MITVMA.MIT.EDU
> > Subject: Re: [EE] Bypass Capacitors
> >
> >
> > You're looking at proportional economics and not absolutes. For
> > example, a PIC project that cost $8 to build 5 years ago
> now costs $2
> > and is functionally superior, while average income has still risen.
> >
> > So, just because an MCU that cost $8 5 years ago now costs
> ~$2 doesn't
> > mean that the cost of decoupling has *risen*...it's still dropped
> > significantly. It hasn't dropped inline with the cost of MCUs, for
> > sure...but that's a somewhat meaningless and arbitrary
> metric, don't
> > you think? Kind of like me saying that compared to the cost of
> > oranges, capacitors are still expensive.
> >
> > AND...if you're paying US$0.15 for .1uF caps...let me know and I'll
> > source you cheaper ones. Even my local electronics retail
> store sells
> > single units cheaper than that OTC!
> >
> > -marc
> >
> >
> >
> > On 15/6/03 00:58, "William Chops Westfield" <billw@CISCO.COM> wrote:
> >
> > >   The cost of adding decoupling caps to a design is
> > negligible...you can't
> > >   argue you did it for cost reasons anymore.
> > >
> > > Ok, how do you figure that?  Silicon has gotten much cheaper ($1
> > > microcontrollers), but the price of 0.1uF decoupling caps
> > is still up
> > > at close to $0.1 each, at least in hobbyists quantities
> > from hobbyist
> > > dealers. To me, that means the cost of decoupling caps has
> > become MORE
> > > significant.
> > >
> > > Of course, some of this seems to be "marketing."  Good
> > deals on 0.1uF
> > > caps are hard to find BECAUSE there is a high demand for
> > them, BECAUSE
> > > that's what all the published hobbyist projects use for
> > decoupling.
> > > Pick an oddball value like .039uF or .047uF, and it will probably
> > > still work fine for most bypass applications, and you're
> > more likely
> > > to find a good deal.
> > > (Jameco: .047 disk: $0.07, .1 disk: $0.15.  Of course, also
> > .1 mono $0.07,
> > > so it's not as bad as it could be.)
> > >
> > > BillW
> > >
> > > --
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> > >
> >
> >
> > --------------------------------------------------
> > Marc Nicholas Geekythings Inc. C/416.543.4896
> > UNIX, Database, Security and Networking Consulting
> >
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