audio recording on IC -help wanted

"Jamie" <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote in message
news:OO%%j.573$8F1.429@newsfe02.lga...
Guv Bob wrote:

I am sad to say that our experience has been that McMaster-Carr has
changed for the worse in the last few weeks. And I don't see any reason
to think that it will return to the friendly, efficiently-run company
that it has been for the prior 10+ years that we have been buying from
them.

I hope that anyone else who has found this to be the case in your
dealings, will contact McMaster-Carr via their website:
http://www.mcmaster.com/ > Contact. Be sure to ask that your comments be
forwarded to someone in upper management and to a VP of Sales. Be sure
to express your thoughts in a polite, business-like manner.

This is a sad comment that am making -- their company has been a pleasure
to buy from for the past 10+ years. But now their operation seems to
have been turned over to the IT dept and/or bean counters. The sales
desk/phone people are as helpful and efficient as always, but
unfortunately, their "customer service" philosophy is limited to taking
orders. Evidently they have no influence on how the rest of the company
is run.

1. As you probably already know, McMaster-Carr has purged many of its
customers' accounts in good standing, and is now requiring long-term
customers to purchase by credit card only. This is true whether ordering
online or by phone.

2. This is fine for small dollar or infrequent orders, but not
acceptable for routine purchases. 3. Our experience is that cards are
kept with a fairly low limit ($1-$5) because that it takes only one
well-meaning but out-of-control employee to sink a project by excessive
use of his card.

4. However, if your employees have a reasonable limit ($2-$10K), then
the company must now monitor the balance weekly and make mid-month
payments just to keep the balance under the card limit and keep on good
standing with the card issuer.

5. When you are in a major project, you have to spend to much time
keeping track of your credit card balance when you should be spending
time on keeping the project under control.

6. I have talked to various McM-Carr people and have gotten nowhere.
Our account is over 10 years old and, like all our supplier accounts, is
always current.

7. On a different issue.... we have places 4 orders in the past 2
weeks -- all by credit card (as required). Two of these orders were
shipped to addresses in other states that we never heard of.

I hope that they will get enough feedback from their customers to pull
the plug on the impersonal bean-counter attitudes and return some
reasonable customer-oriented management to the company.

Thank you for reading.

Boycott McMaster-Carr

We stopped using them on a regular bases a while ago.

We only buy from them when absolutely necessary.

3 of the major reasons we stopped buying from them are

1. Overly priced products in many area's

2. Inconsistent product line and lack of detail data in cat.

3. Getting double billed attempts. (multiple times).

They never use to be this bad how ever, it seems that the times
are reflecting on their business.

http://webpages.charter.net/jamie_5"
Click to expand...
Absolutely zero problems dealing with them to date. While their prices
aren't the lowest, their service has always been first class. I order
before 4:00 pm, I have it next day by noon. We darn sure don't spend much
more than $2K/yr with them but we always receive friendly courteous service.
I was shocked to read the above.

Stu Fields
Experimental Helo Magazine
 
I just bought a 4GB MicroSDHC card from buy.com
The buy.com Website had a picture with the DANE-ELEC logo, and "CLASS
4" on the card (4MB/sec ?)
I thought it was a good deal for $10.95 (after a $16 rebate).

The product I received only had the DANE-ELEC logo on the cardboard
packaging (packaging looks different from the one displayed on the
website), the micro-to-SD adapter, but not on the MicroSDHC card.
On the reverse of the MicroSD card, I see ""MM8GRO4GUACY-NA" (Made in
Taiwan).

Interestingly, my Kingston 1GB MicroSD card (with Kingston logo) has
"MM8GRO1GUACY-NA" on the reverse (Made in Taiwan too).

Are some companies omitting their branding on flash memory cards they
sell in retail packaging?
Without a logo on the card, how does a manufacturer know their card
from an unbranded one to service their "10-year warranty"?

Is this card inferior in any way to a DANE-ELEC branded 4GB CLASS 4
MicroSDHC card?
 
Alex Coleman wrote:
How can I build myself a decent battery tester for domestic use? Are
there any circuits? Any info about off-the-shelf equipment? (I am in
the UK).

Of course I don't want to spend more cash than I save in batteries,
so there is a limit budget.

At the moment I use an ordinary digital multimeter which has a
setting to put the cell under a load of approx (a) 10mA or (b) 150
mA.

At present the *main* cells I would like to test are AAA and AA cells
made of NiMH, NiCd, manganese-alkaline or zinc chloride

I would like to have a device which simultaneously shows the current
and voltage of a cell under load. And then it would be useful to
simulate different loads - perhaps using a variable resistor?

If it's not too hard to also get a display of the internal resistance
of the cell that I'm told that can be useful. I gather that internal
resistance of rechargeables can show the battery's state of health.
However int resistance increases as the theoretical max capacity
increases and I guess this means that absolute calibration is not
possible, however perhaps internal resistance varies during charge
and is an indicator of capacity?

Thanks for any info.
Click to expand...
One thing that rechargeable and alkalines have in common that they
have high impedance when close to discharged state.
So cheap and easy (partially distructive though) test is to use
a multy-meter, switch it to current measurement mode and using a
high-current path (10A), short the cell momentary.
If you see a sustained current (usually 3-4A but it is not
important) than cell is OK. If you see current drop very fast to below
1A, cell is close to dead state.
Yes, you will lose some charge while doing this test, but for that
you don't need any additional equipment, even no resistor. If you happen
to have a 1 Ohm resistor, you can use it instead of the short.
Procedure is the same but current will be much less.

Regards,
Yevgen
 
Hello Folks,

Looking for a staunch chip to drive transformers in the 30-150kHz range.
The most powerful (and available) one I found is the MIC4451 but it's
1ohm Rdson. Way too much.

There are bigger ones but they usually have a charge pump and the
efficiency is pretty poor when operated at less than 3A:
http://rocky.digikey.com/weblib/Infineon/Web%20Data/TDA21201prelimDS.pdf

What I need is n/p channel push-pull output (not two n-channels), no
charge pump because the clock sometimes stops, and ideally 100-200mohm
Rdson. External FETs aren't so hot, too much cross conduction. I was
hoping there'd be n/p synchronous buck converters. But nope, all with
charge pumps.

Any ideas?

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
 
www.yescell.com Iphone Original LCD supplier
www.yescell.com Iphone Flex battery supplier
www.yescell.com Iphone turbo sim unlock kit 1.1.2/1.1.3 supplier
www.yescell.com Iphone battery exporter
Latest stocks and model arriving by www.yescell.com :
Cellphone&Cellphone parts of Housing/mainboard/flex/lcd/lens/keypad/
spare parts /battery/rotor
Following is the model list :
Iphone lcd housing antenna flex power on-off flex battery
turbo sim unlock kit 1.1.1./1.1.2/1.1.3
Yescell Electronic Ltd.
Http://www.yescell.com
Tel:+86-20-81905708
Fax: +86-20-81859478
Contact:sonia
E-mail:sales03@yescell.com
Msn: yescellltd03@hotmail.com
 
On Fri, 30 May 2008 17:59:42 -0700, "John R. Carroll"
<jcarroll@ubu,machiningsolution.com> wrote:

Tom Gardner wrote:

Hmmm, we've had the opposite experience. Friendly, knowledgeable and
we get same-day delivery if we order by noon. We do about $1k/mo.

I'll second that.
I get my stuff so quick it's scary - usually the same day.


John R. Carroll
www.machiningsolution.com
Click to expand...

Same here, order before noon and get it by end of same day, shipping
cost same as regular UPS.

They are not the cheapest unit cost but going to McMaster Carr for a
100 items or 15 different sources with lower unit costs for the same
items, it is often less expensive in the long run to go with McMaster
Carr.

I have never had a problem with McMaster Carr.

Tom
 
hi
We are the biggest wholesale suppliers..........We have a lot of very
nice quality merchandises with the very special price

We are wholesaler of Nike Jordan and Other Shoes in China. We are big
Shoes Manufacturer in China. We supply many kinds of Shoes, such as
Nike Shoes, Jordan 1-22, Air Jordan, AF1, DUNK, Air max series etc.
Most of them are in stock and can be supplied surely on time. All
these shoes are packed with original-boxes and cards. So we can offer
series of brand Nike shoe with the lowest price and high quality, We
are looking forward to doing business with you
Very fast and safety delivery by TNT, UPS, DHL OR EMS, we can delivery
within 24 hours upon receiving your payment. It is very safe door to
door service, never get problems with customs.
There are various and latest styles for your choice in our website.
Our main markets are the USA, the UK, Germany, France, Italy, Greece,
Jordan, Australia, Canada,Sweden, and many other countries in Europe
and the Middle East regions.

our brands , Ipod nano 1G 2G 4G 8G 30G 60G ,Ps3 ,psp ,wii,are also
available for sale at cheaper rate. They are all brand new with full
accessories and 1 year international warranty, unlocked, work
effectively with any network worldwide and come with user manual guide
in various languages.
Ipod nano 1G 45$ ,2G 55$, 4G 65$,8G 70$, 30G 100$ ,60G 120$
ps3 60GB 300$ 20GB 180$
psp 150$
wii 200$

We have all models of nokia
NOKIA N95 $250
NOKIA N93 $190
NOKIA N92 $160
NOKIA N91 $170
NOKIA N90 $180
Nokia N70 $165
NOKIA N73 $180
NOKIA 7600 (UNLOCK) $150
Nokia 8800 Sirocco Gold Edtion -$250
Nokia 8800 Sirocco Black$250
We wholesale all laptops
Sony VGN-CR13/B 380$
Sony VGN-CR13/L 350$
Sony VGN-CR15/B 320$
Sony VGN-CR13/P 480$
Sony VGN-C21CH 450$
Sony VGN-SZ44CN 580$
Sony VGN-C22CH/W 620$
Sony VGN-N17C 480$
Sony VGN-CR13/W 580$
Sony VGN-FZ15 560$
Apple MacBook 580$
Apple MacBook Pro(MA896CH/A)680$
Apple MacBook Pro(MA896CH/A) 630$
Apple MacBook (MB063CH/A) 580$
Apple MacBook Pro(MA895CH/A) 580$
Apple MacBook(MB062CH/A) 590$
Apple MacBook(MA700CH/A) 580$
Apple MacBook(MA701CH/A) 550$
Apple MacBook Pro （MA610CH/A） 650$
Apple MacBook Pro (MA611CH/A) 680$
Apple MacBook (MA699CH/A) 580$
(1).all products are all original and new
(2).they have 1year international warranty.
(3).free shipping include ems, tnt, dhl, ups. you may choose one kind
(4).deliver time is in 7 days to get your door
We insist the principia: Prestige first,high-quality,competitive
price,
best services,and timely delivery.
Website: http://www.new-nikeshoes.com
msn: zhushao999@hotmail.com
Hong-da Co., Ltd.
 
Item Manufacturer Part Number Date Code Quantity
1 Zilog Z0840004PSC 0117 550
2 Motorola MC68008P8 9620 491
3 No Logo MC68008P8 9124 1857
4 Motorola MC146818P 9604 475
5 Motorola MC146818P 8827 597
6 Motorola MC146818CP 9934 382
7 Hyundai HY62256ALP-10 9548 267
8 Hyundai HY62256ALP-11 9440 15

stlham59 at yahoo dot com
 
N8N wrote:
On May 31, 12:08 am, David Nebenzahl <nob...@but.us.chickens> wrote:
On 5/30/2008 6:00 PM N8N spake thus:





On May 30, 7:29 pm, "hall...@aol.com" <hall...@aol.com> wrote:

ww grainger is no better, were a small business that bought a lot
of a few select items, if you dont buy 6 or 10K a year theres
never a quantity discount.

so they didnt want our business, we buy elsewhere........

now some tiny start up may be discouraged by such idiot policies,
and be the next microsoft.

grainger by bean counting will discourage small customers who one
day may be large customers, but never spend a dime at
grainger........

Grainger isn't interested in non-corporate customers, either.
Makes
you feel guilty buying anything from them for personal use due to
the attitude. I've had nothing but good experiences with McM-C
and
I hope that that does not change. I especially like the quick
shipping, faster than any other company I've ever done business
with. I do wish they'd post brand names on their web site though.

Hmmm, now I have to say that that doesn't jibe at all with my
experience. I have a tiny, tiny account with Grainger, and I've had
nothing but good experiences dealing with them. They're always
helpful and don't seem to mind at all that they're not getting rich
off of me.

That's just it, you have an account with them. If you're just
walking
in off the street they simply won't sell to you, unless you know the
name of a purchasing guy at a company that has an account with them.
Click to expand...
I keep hearing this. They've never asked me for any kind of
identification or account number or anything else. Must be something
in the way you present yourself that causes them to want to pick on
you. My Dad had that problem--he was one of these people who couldn't
go down to the gas station without putting on a suit and tie, and
several times I've seen "wholesalers" turn him away. Same
"wholesalers" when I go in totally grubbed out with tools in my pocket
looking like I ran out of whatever in the middle of a job generally
don't have any trouble with them.

Fortunately I *do* work for a company that has an account, but since
ordering from McMaster-Carr online is actually *faster* than going
to
a brick and mortar Grainger store, unless Grainger has the part in
stock, McM-C gets most of my business.

nate
Click to expand...
--
--
--John
to email, dial "usenet" and validate
(was jclarke at eye bee em dot net)
 
Enjoy fashional Electronics with lowest wholesale price ?
Welcome to http://www.seriouswholesale.com.
We have Thousands of Electronics cpoies (no brand)!
No Scam! We can accept payment by Paypal only!
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features online at naaptol, best shop to buy Nikon products online at
lowest price. Visit- http://www.naaptol.com/brands/WO-Brands-shopping-W238O/Nikon.html
 
N8N wrote:
David Nebenzahl wrote:

Hmmm, now I have to say that that doesn't jibe at all with my
experience. I have a tiny, tiny account with Grainger, and I've had
nothing but good experiences dealing with them. They're always helpful
and don't seem to mind at all that they're not getting rich off of me.

That's just it, you have an account with them. If you're just walking
in off the street they simply won't sell to you, unless you know the
name of a purchasing guy at a company that has an account with them.
Fortunately I *do* work for a company that has an account, but since
ordering from McMaster-Carr online is actually *faster* than going to
a brick and mortar Grainger store, unless Grainger has the part in
stock, McM-C gets most of my business.
Click to expand...

Bullshit. That may be the policy at the local branch. I recently
walked into the local graingers and ordered an obscure projector bulb.
I got it three days late, and I don't even have a business. I paid the
sales tax, along with the price of the bulb, and was told to come back
any time I need something. The clerk spent a half hour locating a
branch with the part in stock and arranging the delivery, for a < $20
sale.


--
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
 
"PhattyMo" <phattymo@not.net> wrote in message
news:48411a8d$0$89386$815e3792@news.qwest.net...
Guv Bob wrote:
I am sad to say that our experience has been that McMaster-Carr has
changed for the worse in the last few weeks. And I don't see any reason
to think that it will return to the friendly, efficiently-run company
that it has been for the prior 10+ years that we have been buying from
them.

I hope that anyone else who has found this to be the case in your
dealings, will contact McMaster-Carr via their website:
http://www.mcmaster.com/ > Contact. Be sure to ask that your comments be
forwarded to someone in upper management and to a VP of Sales. Be sure
to express your thoughts in a polite, business-like manner.

This is a sad comment that am making -- their company has been a pleasure
to buy from for the past 10+ years. But now their operation seems to
have been turned over to the IT dept and/or bean counters. The sales
desk/phone people are as helpful and efficient as always, but
unfortunately, their "customer service" philosophy is limited to taking
orders. Evidently they have no influence on how the rest of the company
is run.

1. As you probably already know, McMaster-Carr has purged many of its
customers' accounts in good standing, and is now requiring long-term
customers to purchase by credit card only. This is true whether ordering
online or by phone.

2. This is fine for small dollar or infrequent orders, but not
acceptable for routine purchases. 3. Our experience is that cards are
kept with a fairly low limit ($1-$5) because that it takes only one
well-meaning but out-of-control employee to sink a project by excessive
use of his card.

4. However, if your employees have a reasonable limit ($2-$10K), then
the company must now monitor the balance weekly and make mid-month
payments just to keep the balance under the card limit and keep on good
standing with the card issuer.

5. When you are in a major project, you have to spend to much time
keeping track of your credit card balance when you should be spending
time on keeping the project under control.

6. I have talked to various McM-Carr people and have gotten nowhere.
Our account is over 10 years old and, like all our supplier accounts, is
always current.

7. On a different issue.... we have places 4 orders in the past 2
weeks -- all by credit card (as required). Two of these orders were
shipped to addresses in other states that we never heard of.

I hope that they will get enough feedback from their customers to pull
the plug on the impersonal bean-counter attitudes and return some
reasonable customer-oriented management to the company.

Thank you for reading.

Boycott McMaster-Carr










Hmm...that sucks,I just ordered from them for the first time this week.
Paid by CC,so far everything seems dandy..As long as my package arrives in
one piece,I'll be happy.
Click to expand...
I'm sorry, but it will be impossible for you to be happy according to Guv
Bob. And even if you think you're happy, and have your goods, and have them
at a good price, you must commiserate with Gov Bob for his experience. Or
be neurotic in case MMC ever has a problem with your order.

Or, at least, that's what Gov Bob sez.

Steve
 
"Geoffrey S. Mendelson" wrote:
Michael A. Terrell wrote:
Are you storing them in an oven? I have used Alkaline cells that
were over six years old.

I think it has more to do with who makes the batteries and where
than how they are stored. We get lots of things from Hong Kong,
Singapore and mainland China.

If you think the people who put melanine in powdered milk, or used lead
paint on toys are the only ones who produce cheap junk and label it
has high priced well known brands, you are mistaken.

Here, were most UK and US brands are not officially sold, and grey market
goods are perfectly legal, you never know what you are buying, even if you
buy it in a well known store.

I expect that it's now the same way elsewhere, except that the name
brands usually are really what you think you are getting.

For example, last Christmas one of the major UK retailers sold a DVD player
for 10 quid. In the box was a remote and I assume batteries. How much did
those batteries cost, and how many of them surfaced with "brand names" on
them?
Click to expand...

I'm in the US, so quid is meaningless to me. Most remotes here seem
to be shipped with crappy carbon zinc, or no name alkaline cells. Some
are so bad they leak before the item is sold.

Right now you can buy a DVD player for US $14 after a $5 rebate. I
saw plenty of them in the 19 to 29 dollar range through the year.

I buy only name brand US made cells when I can. I keep a good
supply on hand for power outages, flashlights & hurricane season. I use
my oldest stock between seasons, and some got quite old. They were well
past the use by dates, but all were still good.


--
http://improve-usenet.org/index.html

aioe.org, Goggle Groups, and Web TV users must request to be white
listed, or I will not see your messages.

If you have broadband, your ISP may have a NNTP news server included in
your account: http://www.usenettools.net/ISP.htm


There are two kinds of people on this earth:
The crazy, and the insane.
The first sign of insanity is denying that you're crazy.
 
Dimbleby / John Major, April 1997

Certainty level: 90%

Dimbleby interviews John Major during the election campaign. Here is
the exchange, regarding Neil Hamilton, the "sleazy" Tory candidate;

Dimbleby: "It's a direct quotation from what he said to Sir Gordon Downey
and what he said to his local newspaper, the Knutsford Guardian".
Major: "Well, heaven forfend that I should doubt what the Knutsford
Guardian actually said"
Dimbleby: "Well I should hope so"
Major: "Absolutely, it would be quite unforgivable to doubt the
Knutsford Guardian"

What I find in this segment is an assonance between "Knutsford" and "Nut"
or "Nuts". I think Dimbleby deliberately invents the play on words,
and says it clearly enough for Major to pick it up and repeat it.
You can gauge Dimbleby's intent from his facial expression of false
honesty when he uses the words "Knutsford Guardian"; and Major's reaction
follows from his recognition of Dimbleby's intent; Major smiles and says
it would be "unforgivable to doubt the Knutsford Guardian".
These are much clearer on the original video than on this Quicktime clip.

4021


--
Posted via NewsDemon.com - Premium Uncensored Newsgroup Service
------->>>>>>http://www.NewsDemon.com<<<<<<------
Unlimited Access, Anonymous Accounts, Uncensored Broadband Access
 
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On 6/1/2008 5:07 AM N8N spake thus:

On May 31, 10:36 am, "J. Clarke" <jclarke.use...@cox.net> wrote:

N8N wrote:

On May 31, 12:08 am, David Nebenzahl <nob...@but.us.chickens> wrote:
On 5/30/2008 6:00 PM N8N spake thus:

On May 30, 7:29 pm, "hall...@aol.com" <hall...@aol.com> wrote:

ww grainger is no better, were a small business that bought a lot
of a few select items, if you dont buy 6 or 10K a year theres
never a quantity discount.

so they didnt want our business, we buy elsewhere........

now some tiny start up may be discouraged by such idiot policies,
and be the next microsoft.

grainger by bean counting will discourage small customers who one
day may be large customers, but never spend a dime at
grainger........

Grainger isn't interested in non-corporate customers, either.
Makes
you feel guilty buying anything from them for personal use due to
the attitude. I've had nothing but good experiences with McM-C
and
I hope that that does not change. I especially like the quick
shipping, faster than any other company I've ever done business
with. I do wish they'd post brand names on their web site though.

Hmmm, now I have to say that that doesn't jibe at all with my
experience. I have a tiny, tiny account with Grainger, and I've had
nothing but good experiences dealing with them. They're always
helpful and don't seem to mind at all that they're not getting rich
off of me.

That's just it, you have an account with them. If you're just
walking
in off the street they simply won't sell to you, unless you know the
name of a purchasing guy at a company that has an account with them.

I keep hearing this. They've never asked me for any kind of
identification or account number or anything else. Must be something
in the way you present yourself that causes them to want to pick on
you. My Dad had that problem--he was one of these people who couldn't
go down to the gas station without putting on a suit and tie, and
several times I've seen "wholesalers" turn him away. Same
"wholesalers" when I go in totally grubbed out with tools in my pocket
looking like I ran out of whatever in the middle of a job generally
don't have any trouble with them.

I'm usually wearing a company logo polo shirt, even so I've gotten the
same reception from two different Grainger branches. First question
is "who do you work for" and the second is "whose account is this
going on." If you tell them that you're buying stuff for yourself
they will still insist on associating the purchase with an account.

The electrical wholesaler down the street, I *have* walked in wearing
a shirt and tie and received prompt, friendly service.
Click to expand...
I don't doubt your experiences w/Grainger.

It must vary according to location. I remember when I first started
buying stuff there (mine's in Berkeley, CA), I didn't have an account,
and had no trouble buying there.

They *do* ask what account the purchases are going on as a matter of
course, because, I guess, most purchases there are on account. But that
doesn't prevent you from buying if you don't have an account (again, at
least at this location).

The reason I have an account is that they asked me if I wanted one and I
said yes.


--
The best argument against democracy is a five-minute
conversation with the average voter.

- Attributed to Winston Churchill
 
Hello all, I am repairing a Keithley 617 that has a blown input JFET Q308
which is no longer available. Looking at the service manual, I am unable
to determine what a good sub would be, as the part # is a Keithley house
numbered part (617-606) The manual is here:
http://www.keithley.com/data?asset=1062 Schematic is on page 161 and the
parts list is on pg. 155. Could anyone please suggest a good sub for this
part? Thank you for any help.

Is it dual gate or dual FET?
If the latter then just tie 2 basic ones together with some white goo
between would probably be adequate for all but the most stringent of uses.
Click to expand...
In this application, I don't think that this approach would work
well... at least, not without some preparation. It looks as if this
dual-JFET is being used as a high-Z buffer in a sort-of-differential
input stage. Matching of the two JFETs in the package (for Idss,
transconductance, pinchoff voltage, etc.) is probably important.

The original Q308 part probably had good matching between the two
JFETs. It may also have been hand-selected by Keithley for a specific
range of Idss.

There's enough process variation in JFET manufacture that two single
JFETs, with the same number and from the same manufacturing batch, are
likely to vary in Idss by quite a bit (tens of percent). This might
unbalance the input stage enough to affect its accuracy. Tying the
JFETs together thermally will certainly minimize thermal drift, but if
they aren't already well-matched this might not help matters.

JW - are both sides of the existing dual JFET blown, or did just the
left-hand size (pins 1-3) get fried? If the right side is still
intact, you could measure the Idss, pinchoff voltage, and
transconductance and thus get a better sense as to what you'd need to
replace it.

I'd offer two practical alternatives to replacing it:

[1] Try what N_Cook suggested - use two single JFETs glued together.
Grab a bagful, measure them for Idss and pinchoff voltage, and
pick a pair which are well-matched.

[2] Try a U440 or U441. These have gate-voltage matching to within 10
or 20 millivolts. Newark has both types in stock... the U441 with
its 20 mV matching is less painfully priced and I suspect it'd do
the job.

--
Dave Platt <dplatt@radagast.org> AE6EO
Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!
 
On Sat, 20 Oct 2007 20:50:18 -0700, the renowned
"clicliclic@freenet.de" <clicliclic@freenet.de> wrote:

Lostgallifreyan schrieb:
Has anyone got any thoughts about this:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=170158848446

I asked the seller about postage from Germany to UK, and sending secure
delivery of euros as he doesn't use PayPal, and the seller didn't answer my
questions but instead responded with this:

"We have got 2000stk (H11F1 DC/ 9922) and 1000stk (H11F1 DC/ 9934) , when
you want you can buy it all. What would you pay for?"

I don't recognise those codings from Fairchild's site, so I asked about

What is it that you fail to recognize? The seller seems to be less
than fluent in English as he wrote "2000stk" and "1000stk" (i.e. "2000
Stück" and "1000 Stück" ) for "2000 pieces" and "1000 pieces". The
Fairchild H11F1 datasheet specifies the datecode as XXYY where XX =
two digit year code, and YY = two digit work week ranging from 01 to
53. So that looks ok.

that, and why they're specified as Shmitt trigger FET when Fairchild
specify them for high linearity and use as a variable resistance, something
Schmitt responses aren't designed for. I allowed for the possibility that
Fairchild might not be the only makers, and asked about that too. I've
twice asked this now, three days apart, but the seller refuses to reply.

He is probably fed up with English that is above his head and with
technical details he doesn't know about (like what uses the things can
advantageously be put to, and who in the world has made them) and may
also fear trouble. It can be a headache to transfer "small" amounts of
money between Britain and Euroland. Among his payment options are Cash
on Collection (how does this work?), Cash On Delivery (if the
international carrier cooperates), and Bank Transfer (which can be
costly).

(Btw, it's "Schmitt trigger" :).)


This looks extremely dodgy to me, surely someone who knows what they're
selling would answer quickly to someone who sounded like they knew what
they might be buying and wasn't sure of a few details.

I had a look at the offer, and the above are my thoughts. Can't spot
anything obviously dodgy here.

Martin (who owes you a reply).
Click to expand...
That's my impression too-- a seller who likely has dubious English
skills, and almost surely doesn't really understand what he is selling
(It's not uncommon for eBay sellers to get stuff by auctions or
whatever that they don't really understand). Of course that increases
the risk that you'll get something other than what you think.. I'd be
a lot more confident if there was a photo, but the first two
conclusions would remain.

Note also that he appears to have tried to sell the bulk of his stock
to you outside of eBay. While not unusual, it's not really kosher.

To summarize- I don't think it's a scam either, just a German guy
trying to make a few spare EURs.


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
 
On Oct 25, 4:51 pm, Jim Granville <no.s...@designtools.maps.co.nz>
wrote:

In another post Lewin mentins end 2008 for early silicon, being
derived from someones ASIC.
Click to expand...
That comment should be taken with the appropriate sample of ionic
compound :) It would probably be more accurate to say it's an ASSP
which is being designed to meet some specific customer's requirements
(not us), and it will be made generally available.

That end 2008 figure is also not an official figure from TI, it's just
the feeling I get from the last time I talked with them about it.
 
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