sci.electronics.design Google Group

Fantastic new audio amp !

someone...@ntlworld.com (TTman) — Sat, 21 Nov 2009 09:56:56 UT

100Watts, runs from a 1.5V battery . Yes, that's correct ! So that would be
a 500AHr. single nicad then, with a 2C charger.
Its true !
[link]

Re: Audio VCO design

tmoran...@charter.net (Tim Williams) — Sat, 21 Nov 2009 08:40:29 UT

I liked this thing,
[link]
of course it can be simplified a bit if you don't need it to be as fancy.
And if you're not running up to 40MHz, you can ease off on the bias current,
too. ;-)
The nice thing about this circuit is its wire range. 50Hz to 4kHz is a very

Re: OT: "black box"

f...@frank-buss.de (Frank Buss) — Sat, 21 Nov 2009 06:52:21 UT

Why do you need it?
I don't know if this is the same as the old German message:
[link]
Audacity shows something like soft triangles, with 1017 Hz, 1492 Hz and
1926 Hz, each tone 0.3 seconds. I guess the original signal are sharp
triangles and then lowpass filtered because of the telephone line.

Re: Hee! Hee! Hee!

quiettechb...@yahoo.com (JosephKK) — Sat, 21 Nov 2009 06:13:57 UT

^^ here is the evidence
I am using Forte Agent. It should show up literally verbatim in my
reply. What i am seeing is that you have set your Thunderbird to use
">".

Re: Theremin...

lektric....@gmail.com (lektric.dan@gmail.com) — Sat, 21 Nov 2009 05:06:49 UT

I looked at the kit sold by PAIA Electronics earlier this year -
[link]
It's called the "Theremax Theremin". They carry other synth kits if
your daughter's interest spreads...

Re: OT: What is this Intel Parallel Studio?

keina...@sci.fi (Paul Keinanen) — Sat, 21 Nov 2009 04:40:55 UT

On Fri, 20 Nov 2009 19:02:14 -0800, Robert Baer
The nice thing in a dual core architecture is that the other core can
be used to run the OS and the user interface bells and whistles, while
the other core can be used for actual work.
In some way, this arrangement resembles a time sharing systems I used

Re: Theremin...

mynameforw...@replacewithmyvices.com.invalid (Ecnerwal) — Sat, 21 Nov 2009 04:22:46 UT

In article
<63045248-e1a4-48ec-92f6-07506 0e8c...@n35g2000yqm.googlegrou ps.com>,
Well, I can report that the University of Glasgow digital version (from
that page) both uses a VCO that's more or less unobtainable these days,
and the circuit was not functional when a high school student tried to
toss it together for a project - but I can't swear that he got it all

Re: triple switcher

jjlar...@highnotlandthistechnologypart.com (John Larkin) — Sat, 21 Nov 2009 04:18:12 UT

On Thu, 19 Nov 2009 15:18:08 -0800 (PST), "langw...@fonz.dk"
We use LTC3411's a lot, tiny little MSOP-10 synchronous switchers.
They are rated for 1.6 amps and are happy doing that. But they only
work up to 5.5 volts in, so we use the LTM thing to get down from +12
to +3.3 and then let the tiny switchers take over for the lower stuff.

Re: day shot to hell

jjlar...@highnotlandthistechnologypart.com (John Larkin) — Sat, 21 Nov 2009 04:07:11 UT

On Fri, 20 Nov 2009 17:26:06 -0800, Joerg <inva...@invalid.invalid>
wrote:
We have lots of space for this one. We're replacing an
older-generation board that is about 6x or so of our board area.
You will be not-pleased to know that the switcher section has its own
rectangular ground plane section that is connected to the rest of the

Re: OT: What is this Intel Parallel Studio?

syl...@not.at.this.address (Sylvia Else) — Sat, 21 Nov 2009 03:53:22 UT

That was always possible just by tweaking the process priorities.
Sylvia.

Re: OT: What is this Intel Parallel Studio?

zapwiredashgro...@yahoo.com (Joel Koltner) — Sat, 21 Nov 2009 03:24:23 UT

Eh? Desktop and laptop PCs with multi-core CPUs seem to do just fine
scheduling threads across them under Win2K, XP, Vista, Win 7, Linux, the Mac
OS, etc.?
It's true that a lot of software isn't multi-threaded yet, although it's been
changing a lot this past year -- LTSpice now is, EM simulators from the likes

Re: OT: What is this Intel Parallel Studio?

robertb...@localnet.com (Robert Baer) — Sat, 21 Nov 2009 03:02:14 UT

"So-called" refers to the fact that only server boards are able to
take advantage of that hardware, AND one _must_ also use software
written for the multiple cores.
This means that almost all of the private PC users have useless bloat
hardware and were cheated via improper marketing hype.

Re: day shot to hell

jjlar...@highnotlandthistechnologypart.com (John Larkin) — Sat, 21 Nov 2009 02:57:04 UT

On Fri, 20 Nov 2009 17:06:55 -0800, "Joel Koltner"
There will be an aluminum cover over the OCXO, more to keep air
currents off of it than as an EMI shield. That yellow thing was
supposed to be bare copper, not screened, but it is kind of cute this
way. The cover will get grounded by the mounting hardware anyhow.

OT: "fair" partnership with the FED

robertb...@localnet.com (Robert Baer) — Sat, 21 Nov 2009 02:56:50 UT

I'd like to make you a business offer. Seriously. This is a real offer.
In fact, you really can't turn me down, as you'll come to understand in
a moment...
Here's the deal. You're going to start a business or expand the one
you've got now. It doesn't really matter what you do or what you're
going to do. I'll partner with you no matter what business you're in –

Re: Annual PSA test

a...@knology.net (amdx) — Sat, 21 Nov 2009 02:45:54 UT

"Jim Thompson" <To-Email-Use-The-Envelope-I.. .@My-Web-Site.com> wrote in
message news:a3eeg59kj39e54hb59c6p6f9v3e9niv6o9@4ax.com...
I'm guessing it's just for fun now, and there's no chance a 34 yr
old
will walk up to you and say " this is kinda awkward, but, I think your my
daddy!"
Mike