audio recording on IC -help wanted

[Franc Zabkar]

On Tue, 15 Mar 2005 19:03:26 GMT, Michael <NoSpam@att.net> put finger
to keyboard and composed:

Franc Zabkar wrote:

On Mon, 14 Mar 2005 18:29:53 -0800, "Watson A.Name - \"Watt Sun, the
Dark Remover\"" <NOSPAM@dslextreme.com> put finger to keyboard and
composed:

That PDF is schlect.

What is schlect?

The correct spelling is "schlecht".


You're probably correct. I speak the language much better than I spell it, and
I speak it poorly.

"Schlecht" is one of those delicious words which sound pretty much like what
they mean.

That's onomatopoeia.


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

 

[Watson A.Name - \"Watt Su]

"Chris W" <1qazse4@cox.net> wrote in message
news:s1b_d.17785$2s.16931@lakeread06...

I am looking for a power supply to power a small LED night light. I
want it to run of the 120V AC and I need it to be very small. I don't
want the completed night light to protrude more than 1/2" from the
outlet when it is plugged in. I could probably live with 3/4" if I
had
to though. Since this is to power LED's it would be nice if it had a
current limiting feature. It only needs to run 6 20mA white LEDs. So
far the smallest I have found is about a 1" cube. It takes 120V AC to
5V DC.

Here is the usual way of doing this, with a capacitor to drop the
voltage. You will have to connect all 6 LEDs in series. Make sure the
capacitor is X2 rated for connection across the AC line, and all parts
are insulated to prevent a shock hazard. The typical .47 uF X2 rated
cap is about a half inch thick, but you could put two smaller, thinner
capacitors in parallel.

http://ourworld.compuserve.com/homepages/Bill_Bowden/page10.htm#lineled.
gif

BTW, if you don't use a filter capacitor, the flicker becomes
noticeable.

--
Chris W

 

[Fred Abse]

On Thu, 17 Mar 2005 09:07:17 +1100, Franc Zabkar wrote:

That's onomatopoeia.

I had that, once, but penicillin cured it

--
"Electricity is of two kinds, positive and negative. The difference
is, I presume, that one comes a little more expensive, but is more
durable; the other is a cheaper thing, but the moths get into it."
(Stephen Leacock)

 

[Melissa]

"NSM" <nowrite@to.me> wrote :

"Melissa" <melissa@colorado.xxx> wrote in message
news:SLydncB3hrepl6DfRVn-tA@forethought.net...

nod> But I can't imagine it being worth a whole lot, being they sell
updated versions of it as the -C rev. for around $109. I don't recall it
being a kit, just a learning program, so it may not even be worth that
now.

If the box is sealed think up to $1,000 or more.

No, not for this little thing. It's a DC Electronics course, not a 1kw
linear HF amp. The -C version looks like it's selling from heathkit now for
around $111. This is the -A version from about 25 years ago. Yes it's
sealed, but I was just hoping to get close to $100 for it, so I started it
for $99 on ebay 4 hrs ago. It has 1 bid for that already. I'm amazed.

I don't even know if it's a kit or just a learning course, it looks like
the later.

Now the kits are going for big bucks, I see one for a WWV receiver that's
up to arouns $500 already.

If you put it together, as
low as $20. They aren't making them any more. Make sure you put
'Unassembled' in the title line.

Yeah, I put unbuilt, but like I said, I'm not even sure it's a kit, and
can't be without opening the box.

--
Yours In Liberty, Melissa - Colorado, U.S.A.
http://melissasliberty.blogspot.com/

The last best hope for liberty, to give the world its first Bill of
Rights: http://www.UPAlliance.org/billofrights.htm

 

[Travis Jordan]

worley45@aol.com wrote:

I need a couple of 2sk2129s or equivalent, no minimums please.

http://www.dalbani.co.uk/catalogue/product_details.php?id=6437

 

[John Fields]

On Wed, 30 Mar 2005 18:10:58 +0100, John Woodgate
<jmw@jmwa.demon.contraspam.yuk> wrote:

I read in alt.binaries.schematics.electronic that John Fields
jfields@austininstruments.com> wrote (in
l4kl41t0jto9js298hfttgqaa8ufoajcp8@4ax.com&gt about 'Question About IC
Chips', on Wed, 30 Mar 2005:

The damage to the company's repuation would have come from the idiot
programmer's work not having been supervised closely enough, not from
any hardware design fault on my part.

But you've moved on, whereas he has a clear field to explain to the CEO
that 'The designer didn't take standard precautions against unforeseen,
but reasonably foreseeable, events. This was a disaster waiting to
happen.'

---
Well, there are liars and cheats everywhere, and if the damage was
great enough to require me to defend my position it would get sorted
out quickly enough.
---

This thread is spread across six newsgroups. Is that really necessary?

---
I don't know, but someone must have thought it was important enough to
crosspost to hell and back.

--
John Fields
Professional Circuit Designer

 

John Woodgate <jmw@jmwa.demon.contraspam.yuk> wrote:

I find I could occasionally do with a reminder that says: 'Used outputs
of a device should not be left unconnected.'

The only place I've seen where unused outputs should be properly
terminated is when using a differential output in single-ended mode.
Proper termination is required to reduce ground bounce. Fairly rare
circumstance...

 

[Fred*]

is there a way to know what this soft is or what we can do with it without
having to download and install it..???

"RTT" <rtt@clix.pt> a écrit dans le message de
news:59bf988c.0503301357.5b9e10e8@posting.google.com...

Finally the new PDF Explorer beta V1.5 build 31 is online, not the
official beta release but only the pre-release.

Check out the new features of the most popular, and freeware, PDF
documents organiser. Please report bugs and send ideas to improve it.

The translation, to your idiom, of the interface language file is also
welcomed

http://www.voy.com/104199/169.html

 

[Michael Black]

"Tim Shoppa" (shoppa@trailing-edge.com) writes:

20 years ago I bought a plastic project box with a grey non-transparent
"box" and a transparent screw-down "lid". Size was about 6" x 4" x 3"
high. The transparent lid was 6" x 4". It was a really nice box, had
brass inserts for the the screws holding down the lid etc., guides for
PCB, etc.

I'm looking for a similar box today.

I'm mainly looking to avoid drilling a buncha holes for LED's.

Tim.

Depending on what it is, and I suppose whether this is a single
unit or not, you could simply hack out part of a metal or plastic
box and install a piece of plexiglass. I did this for something
years ago, it was easy to cut out the plastic from a Radio Shack box,
with the leds mounted on the circuit board and this window making it
nice and visible when the unit was on.

Michael

 

[Michael A. Terrell]

Fred* wrote:

is there a way to know what this soft is or what we can do with it without
having to download and install it..???

"RTT" <rtt@clix.pt> a écrit dans le message de
news:59bf988c.0503301357.5b9e10e8@posting.google.com...
Finally the new PDF Explorer beta V1.5 build 31 is online, not the
official beta release but only the pre-release.

Check out the new features of the most popular, and freeware, PDF
documents organiser. Please report bugs and send ideas to improve it.

The translation, to your idiom, of the interface language file is also
welcomed

http://www.voy.com/104199/169.html

If you had looked at the link posted you would see that it appears to
be a program to index the text in PDF documents.

--
Former professional electron wrangler.

Michael A. Terrell
Central Florida

 

[Michael A. Terrell]

Tim Shoppa wrote:

20 years ago I bought a plastic project box with a grey non-transparent
"box" and a transparent screw-down "lid". Size was about 6" x 4" x 3"
high. The transparent lid was 6" x 4". It was a really nice box, had
brass inserts for the the screws holding down the lid etc., guides for
PCB, etc.

I'm looking for a similar box today.

I'm mainly looking to avoid drilling a buncha holes for LED's.

Tim.

The last time I bought something like that it was classed as a
"Plastic NEMA box". You might find it here if you want to jump through
their hoops:
http://www.globalspec.com/industrial-directory/Electronic_Plastic_Enclosure_Boxes/


--
Former professional electron wrangler.

Michael A. Terrell
Central Florida

 

[Michael]

Tim Shoppa wrote:

20 years ago I bought a plastic project box with a grey non-transparent
"box" and a transparent screw-down "lid". Size was about 6" x 4" x 3"
high. The transparent lid was 6" x 4". It was a really nice box, had
brass inserts for the the screws holding down the lid etc., guides for
PCB, etc.

I'm looking for a similar box today.

I'm mainly looking to avoid drilling a buncha holes for LED's.

Tim.

Nothing that large.
All Electronics has a polycarbonate, clear case *and* clear lid. 4.71" x 2.55"
x 1.57" high
"Threaded integral brass bushings. Screws included." made by Hammond Mfg.
cat# 1591-CTCL $5.95

Also, identical to above except transluscent BLUE case & lid (#1591-CTBU) or
transparent RED case & lid (#1591-CTRD)

I got one of the red cases (the red is dark, "ruby") on close-out from somewhere
else a year or two ago, specifically so that 7-seg LED display would show
without my having to hack the case.

 

[Fred*]

"Michael A. Terrell" <mike.terrell@earthlink.net> a écrit dans le message de
news:424C24A7.26604E82@earthlink.net...

If you had looked at the link posted you would see that it appears to
be a program to index the text in PDF documents.

--
Former professional electron wrangler.

Michael A. Terrell
Central Florida

I looked at this link, but it's a only a forum, and I don't have time to
search in the different post to try to find a description on this software..

 

[Watson A.Name - \"Watt Su]

<jasonbosh1972@yahoo.com> wrote in message
news:1112292682.190612.315640@l41g2000cwc.googlegroups.com...

Check out 240 amp and 160 amp diodes for $24.99 at:

You actually think you're gonna sell those rectifier diodes?
You remind me of that terribly optimistic driver I saw the other day.
He was driving a Ford Festiva with a trailer hitch!!

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=xxxxxxxxx

(My dad used to call it Gutless Wonder.)

 

[Franc Zabkar]

On 1 Apr 2005 14:21:40 -0800, elucas@sti.com.br (Eduardo Luccas) put
finger to keyboard and composed:

I need a datasheet for the old DRAM chips 4416 (aka TMS-4416).

If all you need is the pinout, then go here:
http://www.embeddedlinks.com/chipdir/pinusr/tms4416.txt

Otherwise I have the datasheet for the SMJ4416, the mil spec version
of the TMS4416. Contact me via email if you need it.


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

 

[Watson A.Name - \"Watt Su]

<alondra101@hotmail.com> wrote in message
news:1112391790.817667.293990@f14g2000cwb.googlegroups.com...

Hugh found this one:

http://apod.gsfc.nasa.gov/apod/astropix.html

OOPs. I guess that pic at that URL changes every day. Try this one.
http://apod.gsfc.nasa.gov/apod/ap050401.html

 

[EN]

I just sent you the datasheet, TMS4416.pdf , 8.6 Megs.



"Eduardo Luccas" <elucas@sti.com.br> wrote in message
news:2c328fdc.0504011421.3e8dbe29@posting.google.com...

Hi people !
I need a datasheet for the old DRAM chips 4416
(aka TMS-4416). Can not found in any places on the Internet

 

[Mark Zenier]

In article <2c328fdc.0504011421.3e8dbe29@posting.google.com>,
Eduardo Luccas <elucas@sti.com.br> wrote:

Hi people !
I need a datasheet for the old DRAM chips 4416 (aka TMS-4416).

Can not found in any places on the Internet (like
www.datasheetarchive.com).

Can someone help-me ?


If any friend have this datasheet, please, send to me at:
elucas@NOSPAMsti.com.br (remove NOSPAM to get correct address).

Thanks very very much for any help.
[]'s
Eduardo Luccas
Sao Paulo - Brasil

Hi Eduardo,

First the DRAM controller (mc3242), and now the DRAM. ;-)

ftp://ftp.eskimo.com/u/m/mzenier/TI-TMS4416.pdf

Mark Zenier mzenier@eskimo.com Washington State resident

 

[Spehro Pefhany]

On 5 Apr 2005 02:55:25 -0700, the renowned
david@cowan44.freeserve.co.uk (david cowan) wrote:

Hi,

I'm engaged in a low light level application and I'm looking to
increase the sensitivity of an image sensor by:
1. Slowing the clock radically to allow more charge to accumulate.
2. Obtaining a direct ANALOGUE signal from the sensor to allow me to
digitise it with much higher resolution.

In principal these devices are incredibly sensitive but unfortunately
(for me )the tend to be aimed at high speed applications. I need only
moderate resolution.

Any thoughts or anyone know of such a device???

Thanks again,

David Cowan

You might want to look at what astronomers (including amateur
astronomers) do with CCD and other image sensors. I think cooling the
sensor is part of it.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

 

[Roger Hamlett]

"david cowan" <david@cowan44.freeserve.co.uk> wrote in message
news:f33da58b.0504050155.737b49a4@posting.google.com...

Hi,

I'm engaged in a low light level application and I'm looking to
increase the sensitivity of an image sensor by:
1. Slowing the clock radically to allow more charge to accumulate.
2. Obtaining a direct ANALOGUE signal from the sensor to allow me to
digitise it with much higher resolution.
Remember that the 'point' of CMOS sensors, compared to CCD's, is that the

complete camera can be built much more cheaply because major parts of the
electronics can be included in the CMOS chip. Hence it is rare for them to
provide access to the analogue signals. Also the presence of these
components increases the thermal noise inside the chip.
Realistically, what you want to do, is easier to do with a CCD. The Sony
CCD's, are 'favoured', because they have some of the lowest dark current
levels for any chip. Refrigerate the chip, and you can integrate the
signal for minutes (hours!...).
The cheapest 'mass production' camera on the market of this sort, is the
Meade DSI. This has a 16bit ADC, instead of the normal webcam 8/10bit
unit, and will accept exposure times of several minutes if required. It is
limited by the fact that the CCD is not directly coooled, so thermal noise
on the chip, builds relatively quickly. However for exposures up to a few
minutes, it is the cheapest solution.
Going slightly 'up market', Starlight Express in the UK, do a number of
astronomical cameras based on the larger versions of this chip, and some
industrial cameras based on the same chassis. These use unregulated
Peltier cooling to keep the thermal noise better controlled. Some of the
mono models o these have quantum efficiencies well over 60%. SBIG, do
cameras based on the Kodak CCD's (which at room temperature, exhibit more
dark current than the Sony CCD's), with multi-stage Peltier coolers, which
allow the chips to be taken to around 45C below the ambient, and
temperature regulated. Some models of their cameras, reach QE levels over
85%, across quite a large piece of the visible spectrum, and are only
bettered by rear illuminated CCD's costing vastly more.

In principal these devices are incredibly sensitive but unfortunately
(for me )the tend to be aimed at high speed applications. I need only
moderate resolution.

Any thoughts or anyone know of such a device???

Thanks again,

David Cowan
Look at the DSI. It may well be useable, if not the CCD is readily

available, and sounds as if it might be usable as the basis of such a
unit.

Best Wishes