audio recording on IC -help wanted

[Michael A. Terrell]

alandav123 wrote:

Hi there, I am selling

Spam, off topic. This is not a "For sale" newsgroup. Any electronics
related sale messages belong on
<news:misc.industry.electronics.marketplace> or
<http://groups.google.com/group/news:misc.industry.electronics.marketplace?hl=en>
for Google users.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

 

[Boris Mohar]

On Tue, 15 May 2007 13:27:11 GMT, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

There are lots of really good op-amps suitable for or specifically designed for
low noise audio use but the most popular configuration is the dual package (for
many good reasons).

Having established that my client for the refurbished 'boutique' mic pre-amp
doesn't mind if it's non-original provided there's an improvement, does anyone
have any favourite candidates to replace the venerable NE5534 ? Bipolar or fet
input, I don't mind, the noise source impedance at the op-amp non-inverting
input is ~ 1200 ohms.

Graham

If you can live with +/-5 V try MAX412

--

Boris Mohar



--
Posted via a free Usenet account from http://www.teranews.com

 

[Eeyore]

Boris Mohar wrote:

If you can live with +/-5 V

I can't.

Graham

 

[BobG]

Do you have a link to more on those?
Google's only references to "BPAP1200" are archived copies of your post.
==================================

Search for Maxwell Technologies Boostcap

 

[Lostgallifreyan]

BobG <bobgardner@aol.com> wrote in
news:1180641222.511915.187640@p77g2000hsh.googlegroups.com:

Do you have a link to more on those?
Google's only references to "BPAP1200" are archived copies of your post.
==================================
Search for Maxwell Technologies Boostcap

Thankyou. Those look good.

 

[Anthony Matonak]

Lostgallifreyan wrote:

"Paul E. Schoen" <pstech@smart.net> wrote:

Supercapacitors are available, such as Maxwell BPAP1200 – E270, which are
1200 F at 2.7 V. Ten in series gives you 120 F at 27 volts, and energy
storage of 43,000 W-Sec, or 50 seconds run time at 800 watts. They cost
about $46 each.

Do you have a link to more on those?
Google's only references to "BPAP1200" are archived copies of your post.

It's probably a typo, try BCAP1200-E270 or "boostcap ultracapacitor".

Better yet, The 3000F version.
http://www.maxwell.com/ultracapacitors/products/large-cell/bcap3000.asp

Anthony

 

[Lostgallifreyan]

Anthony Matonak <anthonym40@nothing.like.socal.rr.com> wrote in
news:465f9c05$0$9973$4c368faf@roadrunner.com:

Lostgallifreyan wrote:
"Paul E. Schoen" <pstech@smart.net> wrote:

Supercapacitors are available, such as Maxwell BPAP1200 – E270,
which are 1200 F at 2.7 V. Ten in series gives you 120 F at 27
volts, and energy storage of 43,000 W-Sec, or 50 seconds run time at
800 watts. They cost about $46 each.

Do you have a link to more on those?
Google's only references to "BPAP1200" are archived copies of your
post.

It's probably a typo, try BCAP1200-E270 or "boostcap ultracapacitor".

Better yet, The 3000F version.
http://www.maxwell.com/ultracapacitors/products/large-cell/bcap3000.asp

Anthony

I really want one of those just to play around with it. I guess I can
wait awhile though, if they cost tens of pounds or dollars each.

 

[Homer J Simpson]

"Jamie" <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote in message
news:n_j8i.23$Dr5.11@newsfe04.lga...

P.S.
Can some one tell me what a flex is?

Cabtyre.

 

[Homer J Simpson]

"Coleman" <no@no-email.com> wrote in message
news:Xns9943CECC3190671F3M4@127.0.0.1...

Why do you need such a long cable?

The cable on my fan heater is about 4 to 5 foot and is too short to
be used whre I want it to be.

I want it to extend it to about 10 foot.

Then a regular extension cord will work fine.


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[Paul E. Schoen]

"Lostgallifreyan" <no-one@nowhere.net> wrote in message
news:Xns9941CDB272E07zoodlewurdle@140.99.99.130...

"Paul E. Schoen" <pstech@smart.net> wrote in
news:465c83f4$0$16279$ecde5a14@news.coretel.net:

Supercapacitors are available, such as Maxwell BPAP1200 – E270, which
are
1200 F at 2.7 V. Ten in series gives you 120 F at 27 volts, and energy
storage of 43,000 W-Sec, or 50 seconds run time at 800 watts. They cost
about $46 each.


Do you have a link to more on those?
Google's only references to "BPAP1200" are archived copies of your post.

I think they may have changed model numbers, or it was a typo. The BPAP was
recommended by their app engineer. This is the same:

http://www.maxwell.com/ultracapacitors/products/large-cell/bcap1200.asp

They even have a BCAP3000, and a 15 volt module (58 farads):

http://www.maxwell.com/ultracapacitors/products/modules/bmod0058-15v.asp

and a 48.6 volt 165 Farad monster:

http://www.maxwell.com/ultracapacitors/products/modules/bmod0165-48-6v.asp

Paul

 

[JackShephard]

On Tue, 05 Jun 2007 22:28:23 -0700, JackShephard
<SomewhereOnTheLOSTIsland@someplaseintime.org> wrote:

On Tue, 05 Jun 2007 17:59:39 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:

Hello Folks,

Ok, first, those card ejectors from RichCo and other mfgs don't seem to
be in stock anywhere. Is there a place that sells them by the dozens and
not truck loads?

Other: We've designed the boards per spec. Holes for the ejector 250mils
in, boards exactly Eurocard length (160mm) but the boards aren't flush
with the front rails of the VME cage. So maybe those ejectors wouldn't
work anyhow.

Are there any "pull tools" available? We used to have those for
ultrasound machines because ejectors were rattling to much. But that was
many moons ago and I don't have the foggiest where they came from.
Basically they caught the holes and then you cantilevered the board out.
Of course, engineers didn't want to be sissies so we kept pulling by
hand until thick callusses developed.

Liar!
You got them pulling on your dick.



Another forgery by Lamey The ForgeTard.

 

[Heinz Liebhart]

On 13 Jun 2007 14:37:46 GMT, ba221@FreeNet.Carleton.CA (Gaetan
Mailloux) wrote:

Hello


I would need to find a Analog to Digital Converter IC to do data acquisitions
with a Pc computer using the parallel port.

Anyone know some analog to digital converter IC with sampling rate over 400
khz who can be good for that ?

IMO your problem would not be getting a simple ADC for doing that, the
major prob I see is getting 400k/sec over a parallel port. What about
a simple microcontroller doing the ADC for you and sending the data
via RS232? BTW, wich accurcy, resolution, ...?

For 8bit it should be possible with data rates of modern RS232
equipment. (e.g. 460800 baud = quad 115200) You will avoid timing
probs due to the non realtime OS, too.

Regards,
Heinz

 

[Jean-Yves]

In article <Xns994EBA94A31D4zoodlewurdle@140.99.99.130>,
Lostgallifreyan <no-one@nowhere.net> wrote:

ba221@FreeNet.Carleton.CA (Gaetan Mailloux) wrote in
news:f4p6kr$51b$1@theodyn.ncf.ca:

I was think that the serial port was slower ?

If I'm understanding right, you do not talk about the USB port ?


Serial is slower, but RS-232 is a protocol, also used over USB. I think it
could be very fast over USB2.

not if you send a lot of small amount of data...
it can be fast if you send a few big amount of datas...
this is due to the number of headers that the usb protocol needs...
rs232 is not used over usb, it's totally different...
i think you make a mistake with usb to rs232 converters...

--
Jean-Yves.

 

[Heinz Liebhart]

On 13 Jun 2007 16:39:55 GMT, ba221@FreeNet.Carleton.CA (Gaetan
Mailloux) wrote:

RS242 , it's the serial port, I was think that the serial port was slower ?

Depends of your PC's implementation. Standard speed is up to 115200.
But many modern RS232 implementations can go up to 8x115200.

If I'm understanding right, you do not talk about the USB port ?

Yes, serial, also not via RS232 to USB converters.

If RS232 are ok, what ADC ic do you suggest for a very simple
implementation and schematic ?

Almost every simple _CPU_ (not a standalone ADC) should be able to do
that, e.g. the Silabs CPU C8051F064. ADC Sampling rate up to 1MSample,
and the serial port should be able to do the 400kbit speed.

If you are not that familir with an solder gun give the development
kit a try. Ready to use, including an JTAG interface for programming.

Heinz

 

[Heinz Liebhart]

On Thu, 14 Jun 2007 15:11:38 +0100, "CWatters"
<colin.watters@turnersNOSPAMoak.plus.com> wrote:

400,000 x 8 = 3.2Mbit per second. No PC has RS232 ports that fast.

Oops. U'r right. there is a factor 10 missing :-s
400kBaud is possible, but this means about 40kByte data/sec.

Heinz

 

[W Gray]

Greetings.
Hope this message finds each of you well.

After doing some more searching I have found that it is indeed "PTO32A" not
PT0(zero)32A.

Unfortunately that is as far as I could get. I need more information such
as what kind of chip it is specifically, pin outs, applications, etc.

When I got it at the hamfest I was lead to believe that it was used for
position detection depending upon where a laser beam struck the window on
the part. That does not seem to be true... or does it?

Thanks,
W Gray
1wg1@earthlink.net

 

[Joerg]

Andre Majorel wrote:

On 2007-06-17, GPE <See_GPE_website@cox.net> wrote:

"Andre Majorel" <cheney@halliburton.com> wrote in message
news:slrnf78qhj.3qr.cheney@atc5.vermine.org...

On 2007-06-07, GPE <See_GPE_website@cox.net> wrote:


The parts I'm hurting on the most right now. Old (REAL old)
6800 series parts such as 6821's as well as 6502's and 6532's.
I could use tons of these if I found a reliable and reasonable
source.

Are WDC (Western Design Center) not good enough for 65xx ?

True, you can still get 65C02's and 65C21's. It's the 6532's
that I have trouble with. Finding reasonable, unused and
non-counterfeit ones is getting touger and tougher. I tried
to talk them into making 65C32's. Sure... just ante up a $10K
upfront NRE... yeah, like a hobbiest can do that.


6502.org have an account at WDC and have done group buys there.
I doubt they could pony up 10 kUSD worth of orders, though.

That sounds like a potential business opportunity. If you are really
sure that there is enough of a market you could talk to them about it,
see if they'd support a "vintage processor store". Heck, you guys sell
very tasty 30 year old wine, why not processors?

You could look for Roy J. Tellason's page. He has lots of 65xx
chips for trade/sale.

--
Regards, Joerg

http://www.analogconsultants.com

 

[Andre Majorel]

On 2007-06-18, Andre Majorel <cheney@halliburton.com> wrote:

On 2007-06-17, GPE <See_GPE_website@cox.net> wrote:
"Andre Majorel" <cheney@halliburton.com> wrote in message
news:slrnf78qhj.3qr.cheney@atc5.vermine.org...

Are WDC (Western Design Center) not good enough for 65xx ?

It's the 6532's that I have trouble with. Finding reasonable,
unused and non-counterfeit ones is getting touger and
tougher.

You could look for Roy J. Tellason's page. He has lots of 65xx
chips for trade/sale.

Just checked. Roy lists 6502, 6510, 6522, 6526 and 6567 but no
6532.

http://mysite.verizon.net/rtellason/w4s.html

--
André Majorel <URL:http://www.teaser.fr/~amajorel/>
(Counterfeit: ityvez@catalysis.com owapoxot@rummy.com)
"Duty, honor, country" -- Douglas MacArthur
"Travail, famille, patrie" -- Philippe Pétain

 

[JW]

On Wed, 20 Jun 2007 20:58:57 +1200 "Frank" <erty@home.com> wrote in
Message id: <4678ec8a@clear.net.nz>:

I need two of each to repair two switch mode power supplys

SPW47N60C3 Cool MOST Power Transistor

SDT12S60 Silicon Carbide Schottky Diode

Have you tried http://www.findchips.com

 

[legg]

On Wed, 20 Jun 2007 20:58:57 +1200, "Frank" <erty@home.com> wrote:

I need two of each to repair two switch mode power supplys

SPW47N60C3 Cool MOST Power Transistor

SDT12S60 Silicon Carbide Schottky Diode

Both parts in stock at Digikey, and available in small quantities..

http://www.digikey.com

RL