audio recording on IC -help wanted

Nico Coesel
Guest

Mon Aug 09, 2010 5:48 pm

Adam Smith <adamsmith_at_nospam.com> wrote:

Quote:

Hello,

I am designing a system in which I need to generate a timestamp in order
to insert a checksum, an ID, and other metadata to accompanying data
being passed between modules. I have seen and read of recommendations to
use TOY (Time of Year) Chips but I cannot find any specific chip or
Datasheet on any, to accomplish this.

Any recommendation or referral to suitable references would be appreciated.

NXP has many of such chips!

--
Failure does not prove something is impossible, failure simply
indicates you are not using the right tools...
nico_at_nctdevpuntnl (punt=.)
--------------------------------------------------------------

Proteus IIV
Guest

Mon Aug 09, 2010 8:50 pm

On Jul 12, 1:33 pm, Lostgallifreyan <no-...@nowhere.net> wrote:

Quote:

http://bursonaudio.com/burson_opamp.htmhttp://www.audioenz.co.nz/forums/archive/index.php/t-5625.html

Don't ask me how I bumped into those while Googling for a few bits of info on
audio op-amps, I just wish I hadn't, and want to spread the pain. > Smile

I HAVE NOT PREVIEWED THE OTHR RESPONSES
BUT
BEST TO DO WITH THOSE IS OPERATE THEM IN A HIGH COOLED ENVIRONMENT
GET THEM OUT OF THAT ROOM
OR CHANGE THE TEMPERATURE IN THEIR PRESENT ENVIRONMENT
SO THAT THEY WILL MAINTAIN CRISP RESONANCE WITHOUT THE HEATING
EFFECTS OF THE LOW HARMONIC WAVEFORM ON THE CATHODES AND MECHANICAL
ENCLOSURE

IAP

Proteus IIV
Guest

Mon Aug 09, 2010 8:54 pm

SHORT ANSWER

YES !
TOTALLY INSANE TUBE DUDE [ Wink

]

I AM PROTEUS

Paul Keinanen
Guest

Mon Aug 09, 2010 10:19 pm

On Sun, 08 Aug 2010 23:12:42 -0700, Adam Smith <adamsmith_at_nospam.com>
wrote:

Quote:

Hello,

I am designing a system in which I need to generate a timestamp in order
to insert a checksum, an ID, and other metadata to accompanying data
being passed between modules. I have seen and read of recommendations to
use TOY (Time of Year) Chips but I cannot find any specific chip or
Datasheet on any, to accomplish this.

If you want to generate a unique value from the time stamp, you must
be careful how you got that time stamp.

Local time is clearly out of the question in countries using daylight
saving time, since going back from daylight saving time to normal
time, will cause one hour of duplicate time stamps (I hope I got this
right also for the southern hemisphere Smile

.

UTC is in principle better, but it still suffers from the leap second
problem. While in practice all leap seconds have always been added:
Dec 31 23:59:59, 23:59:60, Jan 1 00:00:00 UTC but in principle it is
also possible to have Dec 31 23:59:58, Jan 1 00:00:00 UTC transition,
so depending on the internal representation, there might be duplicate
problems.

A truly linear time scale, such as GPS time is safe.

mpm
Guest

Tue Aug 10, 2010 12:48 am

On Aug 9, 1:12 am, Adam Smith <adamsm...@nospam.com> wrote:

Quote:

Hello,

I am designing a system in which I need to generate a timestamp in order
to insert a checksum, an ID, and other metadata to accompanying data
being passed between modules. I have seen and read of recommendations to
use TOY (Time of Year) Chips but I cannot find any specific chip or
Datasheet on any, to accomplish this.

Any recommendation or referral to suitable references would be appreciated.

Thanks!

Weird - I thought I replied, but it's not showing up.
Did you look at Maxim DS1305 and/or DS1307 yet?
Or search on Digikey, Mouser, etc... for Real Time Clock.

Adam Smith
Guest

Tue Aug 10, 2010 3:07 am

Thanks guys for your responses, they were very helpful:
Yes, mpm your post did come through earlier.
And Paul Keinanen, you did raise an interesting perspective which I had
not taken into account.

THANKS! again

On 8/9/2010 12:26 AM, Robert Baer wrote:

Quote:

Adam Smith wrote:
Hello,

I am designing a system in which I need to generate a timestamp in
order to insert a checksum, an ID, and other metadata to accompanying
data being passed between modules. I have seen and read of
recommendations to use TOY (Time of Year) Chips but I cannot find any
specific chip or Datasheet on any, to accomplish this.

Any recommendation or referral to suitable references would be
appreciated.

Thanks!
Read the PC clock or the rather fast clock in the FPU (ticks since power
on).

Lostgallifreyan
Guest

Tue Sep 07, 2010 4:58 pm

Eeyore <rabbitsfriendsandrelations_at_removethishotmail.com> wrote in
news:4c8493ea$0$8958$c3e8da3_at_news.astraweb.com:

Quote:

Spehro Pefhany wrote:
On Thu, 26 Aug 2010 12:33:31 -0500, Lostgallifreyan wrote:
George Herold <gherold_at_teachspin.com> wrote

What's HPS? High Power... Sodium?

George H.

Almost... high pressure sodium.

A lot less stinky than high pressure selenium.

You've blown a selenium rectifier too ? :-(

Graham

I think he was thinking of rectifying a bit of abberant evolution...
In case you're wondering what all this means, the Truth is Out There. *big
hint*

admiralsmead
Guest

Sat Feb 19, 2011 12:40 am

contact the folks at http://www.go-grafx.com located in Kitchener Ontario.
I know they make short run custom labels for asset tags etc.

You can also try http://www.polylabel.com/ also in Kitchener or SETON in Markham Ontario http://www.seton.ca/splash/asset_tags/propid.htm

Guest

Mon Jul 18, 2011 2:31 am

On Jul 17, 3:04 pm, Rich Grise <ri...@example.net.invalid> wrote:

Quote:

Spehro Pefhany wrote:
On Sun, 17 Jul 2011 09:17:31 -0700 (PDT), the renowned
a7yvm109gf...@netzero.com wrote:

I would like a thin film device of that size, yes. It's for another
one of my experiments. It's all related to my earlier question of
turning a hard drive into a lapping machine.

Why don't you want to sign their EUA?

EAU, my mistake.

Estimated Annual Usage, hey I got it right the first time... :)

You're thinking End User Agreement?

Yeah, got that on the brain, plus I was allowing for possible swapping
of acronym letters between French and English (eg. HRDC == DRHC).

Well, you can do as John suggests. There are some total a**holes who
will never ever pay for a part who ask for free samples- that's not
you. Isn't there some way this could turn into a product? How
sucessful could that product be?

I've been upfront with vendors, and told them, "Say, what are the chances
you could sample me a couple of these, even though you know it's for a home
project?" and they've sent me parts.

What was it that was wrong with just ordering some? Some kind of import
thing, or minimum order, or some such? Could you find a friendly Yank,
who would just drop ten of them in an envelope?

Thanks,
Rich

The distributors I approached either didn't reply to my email, or only
replied once.
What am I to do!? Thin film Hall sensors aren't easy to buy, it seems.

Guest

Tue Jul 19, 2011 1:33 am

On Mon, 18 Jul 2011 10:46:46 -0400, Phil Hobbs
<pcdhSpamMeSenseless_at_electrooptical.net> wrote:

Quote:

Hall sensors make BLDC motors a lot easier to control, at least at a
hobby or small production level. Back-EMF isn't that easy to do over a
wide range of motor speeds, at least the last time I looked at it.

Cheers
Phil Hobbs

There are few complete motor controllers on a chip type products
around. MicroChip parts MTD6501C, MTD6501D,
and MTD6502B for instance. These only require a microcontroller with a
dedicated PWM channel to operate. These make back-emf control of BLDC
motors easier by orders of magnitude. Trying to do it in software is,
as you describe, a total PITA.
Dave

Jamie
Guest

Thu Sep 15, 2011 12:54 am

The Ghost In The Machine wrote:

Quote:

On Sep 14, 1:40 pm, Fred Abse <excretatau...@invalid.invalid> wrote:

On Sun, 11 Sep 2011 20:40:38 -0700, The Ghost In The Machine wrote:

THE HYSTERISIS CURVE IS A CHARACTERISTIC OF A WAVE FORM., NOT INSIDE
THE CORE BUT THE INPUT/OUTPUT SIGNAL.......

Go learn some magnetics theory (if you're capable).

You might learn to spell "Hysteresis" as well.

--
"For a successful technology, reality must take precedence
over public relations, for nature cannot be fooled."
(Richard Feynman)

MR. ABSCESS, LEARN TO MIND YOUR FUCKING BUSINESS.
BE REAL YOU RODENT, NOBODY LIKES A NOSEY BODY.
TGITM

Why must you use CAPS in all your messages?

Jamie

JW
Guest

Thu Sep 15, 2011 9:16 am

On Wed, 14 Sep 2011 20:54:41 -0400 Jamie
<jamie_ka1lpa_not_valid_after_ka1lpa__at_charter.net> wrote in Message id:
<9Sbcq.7073$RC6.3003_at_newsfe10.iad>:

Quote:

The Ghost In The Machine wrote:
On Sep 14, 1:40 pm, Fred Abse <excretatau...@invalid.invalid> wrote:

On Sun, 11 Sep 2011 20:40:38 -0700, The Ghost In The Machine wrote:

THE HYSTERISIS CURVE IS A CHARACTERISTIC OF A WAVE FORM., NOT INSIDE
THE CORE BUT THE INPUT/OUTPUT SIGNAL.......

Go learn some magnetics theory (if you're capable).

You might learn to spell "Hysteresis" as well.

--
"For a successful technology, reality must take precedence
over public relations, for nature cannot be fooled."
(Richard Feynman)

MR. ABSCESS, LEARN TO MIND YOUR FUCKING BUSINESS.
BE REAL YOU RODENT, NOBODY LIKES A NOSEY BODY.
TGITM

Why must you use CAPS in all your messages?

He rests his schlong on the shift key.

The Ghost In The Machine
Guest

Fri Sep 16, 2011 3:38 pm

On Sep 14, 1:40 pm, Fred Abse <excretatau...@invalid.invalid> wrote:

Quote:

On Sun, 11 Sep 2011 20:40:38 -0700, The Ghost In The Machine wrote:

THE HYSTERISIS CURVE IS A CHARACTERISTIC OF A WAVE FORM., NOT INSIDE
THE CORE BUT THE INPUT/OUTPUT SIGNAL.......

Go learn some magnetics theory (if you're capable).

You might learn to spell "Hysteresis" as well.

--
"For a successful technology, reality must take precedence
over public relations, for nature cannot be fooled."
(Richard Feynman)

PLEASE MR. FLINTSTONE, THIS IS NOT AN ENLIISH GRAMMAR GROUP.
GO TO ALT.ENGLISH.GRAMMAR.FREAKS FOR THAT.
THANK YOU VERY MUCH.
PATECUM
TGITM

BOOWAHAHAHAHAHAHAHAHA !