EDAboard.com | EDAboard.eu | EDAboard.de | EDAboard.co.uk | RTV forum PL | NewsGroups PL

audio recording on IC -help wanted

Ask a question - edaboard.com

elektroda.net NewsGroups Forum Index - Electronics Components - audio recording on IC -help wanted

Goto page 1, 2, 3 ... 255, 256, 257  Next

server
Guest

Wed Sep 29, 2004 2:14 pm   



message unavailable

Ken Finney
Guest

Wed Sep 29, 2004 2:14 pm   



"chenzen" <hellokula_at_yahoo.com> wrote in message
news:19765984.0409230527.77f0e0d2_at_posting.google.com...
Quote:
Thanks to the replies.

Can anybody shed light on the type of IC programmer needed.

Thanks in advance

If you use the ISD2560 type chips, you don't need a "programmer", in the
usual sense.

http://www.isd.com/products/isd_products/chipcorder/datasheets/2560/ISD2560.pdf

Kevin Aylward
Guest

Wed Sep 29, 2004 2:14 pm   



macintush wrote:
Quote:
In article <3efdb7bb$0$87840$9a6e19ea_at_news.newshosting.com>, bigmike
bigmike_at_cornhusker.net> wrote:

Well, the original topic of this thread, was a person asking about
shock treatments. That's electrical isn't it? Smile Okay, I'm just
being a smartass. Yes, thje subject is off topic, but this group
tends to discuss a lot of off topic subjects. That's not a bad thing
either, because there are a lot if intelligent people that visit
this forum, and they have a lot of useful information and ideas to
share. I just wish I was one of them :)

I was surprised to see this subject header crossposted onto a
newsgroup I occasionally read, but nobody from there is involved in
this thread so it has been left out of the crosspost list.

I like bigmike's candidness and exercise of free will.

Since this is an electronics group, I'd like to inform you all of an
electronic "treatment" for this condition. NOT SHOCK "THERAPY" which
is ridiculous. It is called "cranial electrotherapy stimulation," and
utilizes a microcurrent modulated waveform. There is a portable unit
that I've seen that has a 30 minute timer and an amplitude adjustment.
I experienced the effects of the device the other day at a convention,
as I am a health care professional and wanted to see if it could be
beneficial for any of my patients. It supposedly has tons of research
behind it as an effective stimulator of serotonin, and bringing on an
alpha state of relaxation, without the sideeffects as are found in ANY
drug. To me it made me feel slightly dizzy, and sort of "mellow." A
friend of mine tried it too, and I saw him looking very relaxed while
he was using it. The device we tried is called the
AlphaStim 100. It's an electronic, not a chemical "treatment."

That being said, I believe that "psychotherapeutic" drugs are acting
on the wrong target. The target sould not be the brain. The brain is
only where the end products of the condition become noticed. If the
patient's psycho-medicine is ever missed, nothing has changed at all
and danger ensues. The proof is in the news. I think these drugs have
an extremetly limited use and should only be considered as immediately
temporary.

The cause is not in the brain.

Oh?

Where else do you suppose that consciousness located, the feet?

Quote:
The best solution for depression and
anxitety are in alternative healthcare and lifestyle modification, not
a "treatment" for the brain's chemistry.

I doubt this, in general.

"Treatment" is often just a
Quote:
coverup. And just to be very clear, Psychology is NOT IN ANY WAY
alternative healthcare.

There is no denying that sometimes depression is due to your wife
buggering off with the man next door, however, the evidence is
overwhelming that real physical aberrations in the brain cause all sorts
of personality problems. After all, consciousness is nothing more than
the result of physical processes in the brain.

Whether or not depression is a software or hardware fault is any
particular case, is something to be determined. e.g. is there any
apparent cause for a persons depression. As a rule, I am rarely swayed
by the Frazier approach to problem solving.

Kevin Aylward
salesEXTRACT_at_anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.

John Robertson
Guest

Wed Sep 29, 2004 2:14 pm   



I should have the ancient data books at the shop - but it 's a holiday
here on the 1st of July...if I remember I'll check on Wednesday for
you...

John :-#)#

On Tue, 1 Jul 2003 10:27:08 +0000 (UTC), "Mark (UK)"
<jumbos.bazzar_at_btopenworld.com> wrote:

Quote:
Hiya!

This mystery deepens.....

I just got some NOS 4096s today.

I Put them in a depth charge board, and run the board as the cabinet
would, IE +15v to the Vdd, runs perfect.
If I change the Vdd supply to +12v, the board goes bonkers, garbage on
the screen.
If I put 4027s in, and run it at +12v, it runs perfect.
I don't want to risk popping any 4027s by running them at +15.

It seems that the 4096s do not like running at +12v??

I've got a second board here that's got an intermittant fault that I've
given up on for now. I'll try it with that board as well when I get
round to fixing it.

Yours, Mark.

John Robertson wrote:

Ignore my previous post. I had mixed this up with another RAM...

The 4096 is a 4K X 1 that is pin compatible with MCM4027A, 2104, and
MCM6604. Pinout is the same as a 4116 (for the power at least) and it
is NOT a 15V IC AFAIK (13.2Max). I was thinking of the older RAM used
in Space Invaders etc....

John :-#(#

On Mon, 30 Jun 2003 05:27:50 GMT, John Robertson <jrr_at_flippers.com
wrote:

+12, +5 and -5. Same pinout as the 2107 and other 18 pin 4096 RAM of
that period.

The only way that could be powered with +15 is if they used the -5 as
the common and were using some MOS interface devices...I doubt it.

Check the regulator!

John :-#)#

On Sun, 29 Jun 2003 14:52:27 +0000 (UTC), "Mark (UK)"
jumbos.bazzar_at_btopenworld.com> wrote:

Hiya!

I'm looking for the datasheet for the MK4096 dynamic ram by Mostek (or
any of it's equivalents).

My specific query is about the supply voltages. Does this ram need +15v
on the Vdd pin 8, and if you only give it +12, will it be unhappy? I was
under the impression that it was pin compatible with the MK4027, but
that has a maximum Vdd of +13.2. On a Sega Depthcharge PCB, the MK4096
is supplied with +15.

All help appreciated, the datasheet will tell me for sure if someone has
one in .pdf??

Thanks. Yours, Mark.

(Please post followups or tech enquires to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

(Please post followups or tech enquires to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

(Please post followups or tech enquires to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."


Guest

Wed Sep 29, 2004 2:14 pm   



*** post for FREE via your newsreader at post.newsfeed.com ***


Hello again,

Stefan Heinzmann wrote:
Quote:

[...] In my case they obviously put in a zener chip with a zener
voltage of about 6.5V. Since the data sheet does not promise anything
for the reverse direction, they may actually put in what they like,
maybe even other zeners that didn't meet the specs.

Looks likely: 6.5V falls in the middle between the standard voltages
6.2V and 6.8V.

Quote:
Since you need to know that you have to operate them in the forward
direction anyhow, why not take a normal diode instead? It sure would
confuse me if I saw a zener diode operated in the forward direction in
a circuit. I would suspect a mistake.

I found a 0.8V zener is sold by one of the german catalog distributors
at twice the price of the other zeners in the series, which is three
times the price of a 1N4148. Given that the 0.8V zener isn't even
specified in the reverse direction, I'd say this is a cheat and no
sane developer would consider using such a part. Or am I overlooking
something?

Cheers
Stefan

I mostly agree. But for currents in excess of 10mA resistive
contributions should already become noticeable in a 1N4148. You may
consider using a 1N4001 instead.

I had a look at the ZTE datasheet: the typical differential resistances
for the ZTE1.5 and ZTE2 at 5mA are 13 Ohm and 18 Ohm, respectively, and
the temperature coefficient alpha is -26E-04/K for both. This is no
better than one would expect from two and three silicon diodes in
series: 6,5 Ohm for a single diode at 5mA according to the ZPD1
datasheet. So these integrated circuits may really be just diodes.

The ZTEs from 2.4V to 5.1V are obviously different.

On one GaAsP LED from the 70's I find about 35 Ohm at 1mA and about 6
Ohm at 5mA (Uf = 1.52V and 1,57V, respectively). Because the junction
has more than twice the gap of silicon, alpha should be around
-12E-04/K only, less than half the Si value. For currents in excess of
10mA, the LED may gradually loose its advantage as resistive
contributions start to matter.

Still, you may want throw your ZTE1.5 away.

Martin.


-----= Posted via Newsfeed.Com, Uncensored Usenet News =-----
http://www.newsfeed.com - The #1 Newsgroup Service in the World!
-----== 100,000 Groups! - 19 Servers! - Unlimited Download! =-----

Jim Adney
Guest

Wed Sep 29, 2004 2:14 pm   



On Mon, 30 Jun 2003 07:01:12 -0700 Watson A.Name - 'Watt Sun'
<alondra101_at_hotmail.com> wrote:

Quote:
BTW, as the tube aged, the output voltage went higher and higher,
which was not a nice way to treat the other circuits that depended on
the output. That's probably why one seldom saw those kind of circuits
used. Same thing applied to shunt regulators. Someone could come
along and pull out the shunt regulator tube, and the output voltage
would go sky-high. Oops! Why are those tubes glowing orange?

At least in the case of VR tubes there were always a pair of pins
connected together inside the tube which were meant to be used to
disconnect the load if the VR tube was pulled from the socket. Every
application of a VR tube that I've looked at took advantage of this
feature, but I won't claim to have looked at LOTS of them.

-
-----------------------------------------------
Jim Adney jadney_at_vwtype3.org
Madison, WI 53711 USA
-----------------------------------------------

Michael A. Terrell
Guest

Wed Sep 29, 2004 2:14 pm   



Franc Zabkar wrote:
Quote:

Can you tell us the pinout differences between the MK4027 and the
MK4116? I would expect they would be identical except for one
additional high order address bit on the latter.

-- Franc Zabkar


pin 13:
MK4027 = /CS
MK4116 = A6

I can scan the front page of each datasheet and post them on a
website for you, if you need them.
--


Michael A. Terrell
Central Florida

Watson A.Name - 'Watt Sun
Guest

Wed Sep 29, 2004 2:14 pm   



In article <jn02gvgqpo4br20dudca00usfq9ada73of_at_4ax.com>,
jadney_at_vwtype3.org mentioned...
Quote:
On Mon, 30 Jun 2003 07:01:12 -0700 Watson A.Name - 'Watt Sun'
alondra101_at_hotmail.com> wrote:

BTW, as the tube aged, the output voltage went higher and higher,
which was not a nice way to treat the other circuits that depended on
the output. That's probably why one seldom saw those kind of circuits
used. Same thing applied to shunt regulators. Someone could come
along and pull out the shunt regulator tube, and the output voltage
would go sky-high. Oops! Why are those tubes glowing orange?

At least in the case of VR tubes there were always a pair of pins
connected together inside the tube which were meant to be used to
disconnect the load if the VR tube was pulled from the socket. Every
application of a VR tube that I've looked at took advantage of this
feature, but I won't claim to have looked at LOTS of them.

Ya know, for all the work I did on tube stuff, I never noticed that
those pins were for that use. Just now I thought, gee, I'd better
remember that. But then after a moment it occurred to me I'll
probably never again work on toob equipment, if I can help it. So why
bother remembering?


Quote:
-
-----------------------------------------------
Jim Adney jadney_at_vwtype3.org
Madison, WI 53711 USA
-----------------------------------------------


--
@@F_at_r_at_o_at_m@@O_at_r_at_a_at_n_at_g_at_e@@C_at_o_at_u_at_n_at_t_at_y@,@@C_at_a_at_l@,@@w_at_h_at_e_at_r_at_e@@
###Got a Question about ELECTRONICS? Check HERE First:###
http://users.pandora.be/educypedia/electronics/databank.htm
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html
@@t_at_h_at_e@@a_at_f_at_f_at_l_at_u_at_e_at_n_at_t@@m_at_e_at_e_at_t@@t_at_h_at_e@@E_at_f_at_f_at_l_at_u_at_e_at_n_at_t@@

Kevin Aylward
Guest

Wed Sep 29, 2004 2:14 pm   



N. Thornton wrote:
Quote:
"Kevin Aylward" <kevin_at_anasoft.co.uk> wrote in message
news:<j8jMa.668$eG4.37863_at_newsfep2-gui.server.ntli.net>...
macintush wrote:
In article <3efdb7bb$0$87840$9a6e19ea_at_news.newshosting.com>, bigmike
bigmike_at_cornhusker.net> wrote:



however, the evidence is
overwhelming that real physical aberrations in the brain cause all
sorts of personality problems.

Yes, but that doesnt mean that all or most personality problems are
caused by physical aberrations. My observation and experience tells me
that only a minority have any physical cause, most are 100% curable.

I think your blowing in the wind here. This is simply not true. Please
detail you claimed extensive evidence. e.g. professional medical
evaluations of subjects showing that they have no physical impediments,
and that they were cured etc.

Quote:

After all, consciousness is nothing more than
the result of physical processes in the brain.

Hmm, yet depression can indeed be caused by your other half buggering
off with the neighbour. I.e. there is much more to it than that.

Whether or not depression is a software or hardware fault is any
particular case, is something to be determined. e.g. is there any
apparent cause for a persons depression.

In my experience there always is. Though its often not apparent to
them :)


With all due respect, your experience is not sufficient then. Have you
actually done any research on medical treatments at all? The evidence
for physically induced personality disorders is completely overwhelming.
Its the converse of what you say in many, if not most, cases. People try
all sorts of lifestyle changes to solve a problem, when there is a basic
physical cause for the problem. New links between brain function and
behaviour are being discovered all the time.

Have you actually tried using logical arguments to someone with
Schizophrenia? Hint: my twin brother has had Schizophrenia for the last
28 years.

Kevin Aylward
salesEXTRACT_at_anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.

Stefan Heinzmann
Guest

Wed Sep 29, 2004 2:14 pm   



clicliclic_at_freenet.de wrote in message news:<3F01F63F.19CAACDF_at_freenet.de>...
[...]
Quote:
I had a look at the ZTE datasheet: the typical differential resistances
for the ZTE1.5 and ZTE2 at 5mA are 13 Ohm and 18 Ohm, respectively, and
the temperature coefficient alpha is -26E-04/K for both. This is no
better than one would expect from two and three silicon diodes in
series: 6,5 Ohm for a single diode at 5mA according to the ZPD1
datasheet. So these integrated circuits may really be just diodes.

The sort of product idea you'd expect from a marketing department ;-)

Quote:
The ZTEs from 2.4V to 5.1V are obviously different.

On one GaAsP LED from the 70's I find about 35 Ohm at 1mA and about 6
Ohm at 5mA (Uf = 1.52V and 1,57V, respectively). Because the junction
has more than twice the gap of silicon, alpha should be around
-12E-04/K only, less than half the Si value. For currents in excess of
10mA, the LED may gradually loose its advantage as resistive
contributions start to matter.

Still, you may want throw your ZTE1.5 away.

Well, now that I have it I will keep it in my drawer; it can still
serve as a bad example ;-)

Thanks for taking the pains to confirm my suspicions. I've learned
something in the process.

Cheers
Stefan

N. Thornton
Guest

Wed Sep 29, 2004 2:14 pm   



Hi Kevin.

I've sent you an e-mail off-list, hope it reaches you OK.

Regards, NT

John Robertson
Guest

Wed Sep 29, 2004 2:14 pm   



And I had just pulled out my old MOSTEK 1978 "Memory Data Book &
Designer Guide" to answer this!

Note that the MOSTEK recommends a maximum of 20V from any pin relative
to Vbb (-5 normally) - so SEGA running +15 to Vdd is a bit strange to
say the least...kinda pushing the envelope a mite. I would check the
schematic wiring to be safe.

Thanks James!

John :-#)#

On 1 Jul 2003 21:49:15 -0700, jrok <jrokweb_at_san.rr.com> wrote:

Quote:
Hey all,

http://www.jrok.com/datasheet

Complete datasheets for the mostek & motorola 4027 and
the motorola 4116.

- James

------------------------------
JrokLand http://www.jrok.com
------------------------------


In article <3F024156.69F10A9C_at_earthlink.net>, "Michael says...

Franc Zabkar wrote:

Can you tell us the pinout differences between the MK4027 and the
MK4116? I would expect they would be identical except for one
additional high order address bit on the latter.

-- Franc Zabkar


pin 13:
MK4027 = /CS
MK4116 = A6

I can scan the front page of each datasheet and post them on a
website for you, if you need them.
--


Michael A. Terrell
Central Florida

(Please post followups or tech enquires to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

t.hoehler
Guest

Wed Sep 29, 2004 2:14 pm   



Quote:
As I recall, North American hobyists of the era that you refer to,
frequently refered to uF as millifarads. Some manufacturers actually
went so far as to pander to this ignorance.

I don't think so, but capacitors *were* sometimes marked with mF (or
was it mf?) for microfarad. "mu" being a ferrrin glyph and all that..

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


You are right Spehro, I have some radial lead Mallory caps from the mid
seventies that are clearly marked 400 MFD (all caps) and I can promise you,
these guys are *not* 400 millifarads. This whole discussion reminds me of
some designers who trust their spice simulations, never actually burning
themselves with a soldering iron or looking at a damn capacitor to fully
realize a lytic from the seventies a half inch in diameter and one inch high
can no more be .4 F than I can fly to the moon! How about a little "real
world" here!
Regards,
Tom

Dieter Wiedmann
Guest

Wed Sep 29, 2004 2:14 pm   



"Mark (UK)" schrieb:

Quote:
Thanks for your help. I'll look forward to it.

Hi Mark,

now I got the Databook (it's from 1977) and what surprise: most of the
MK4096 operate with Vdd=12V, but the MK4096(P/N)-15 is specified for
Vdd=15V +/-5%. MOSTEK writes that this is the 'consumer and hobbyist'
variant.
Interestet in a complete datasheet?

Regards,
Dieter

Jas
Guest

Wed Sep 29, 2004 2:14 pm   



Hi,

Mainly the DS2490S 1-wire USB bridge (in the 24-pin SO package), but
generally the bigger the selection, the better.

Jas.

On Thu, 3 Jul 2003 12:47:46 +0000 (UTC), "Mark (UK)"
<jumbos.bazzar_at_btopenworld.com> wrote:

Quote:
Hiya!

It may help if we knew what part(s) you are looking for?

Yours, Mark.

Jas wrote:

Hi,

Ive just tried ordering some dallas semiconductors off the maxim
website, only to find out the carriage ($50) comes to twice as much as
the parts.

Is there anywhere in UK/Europe who sells DalSemi parts? I've checked
all my normal buying areas with no joy (farnell, donberg, rs etc.)

Any help appreciated.
Jas.


Goto page 1, 2, 3 ... 255, 256, 257  Next

elektroda.net NewsGroups Forum Index - Electronics Components - audio recording on IC -help wanted

Ask a question - edaboard.com

Arabic versionBulgarian versionCatalan versionCzech versionDanish versionGerman versionGreek versionEnglish versionSpanish versionFinnish versionFrench versionHindi versionCroatian versionIndonesian versionItalian versionHebrew versionJapanese versionKorean versionLithuanian versionLatvian versionDutch versionNorwegian versionPolish versionPortuguese versionRomanian versionRussian versionSlovak versionSlovenian versionSerbian versionSwedish versionTagalog versionUkrainian versionVietnamese versionChinese version
RTV map EDAboard.com map News map EDAboard.eu map EDAboard.de map EDAboard.co.uk map