I buy a lot of stuff from eBay and Amazon, including batteries on occasion.
Invariably, there has been a pretty good correlation between price and quality,
but considerably more so with batteries.
It really sucks paying $100 or more for a quality OEM laptop battery, but the
alternative is to t
6:28 PM
Subject: Re: [time-nuts] Prologix USB-GPIB Controller
Once upon the time I designed some power-supplies, used parts from a sound
name US company, they asked for $12.-- each --it was long time ego -- the
equipment supposed to built in Asia, the manager -- I was one outside
consultant --
Hi
Like it or not, these days the volume purchases of IC’s are made in China.
Volume buys
have *always* been lower cost than normal distribution pricing. A > 10:1 ratio
is not at
all out of the question. If I bought 10,000,000 of a chip each month, I’d
expect (and probably
get) a very good dea
Once upon the time I designed some power-supplies, used parts from a
sound name US company, they asked for $12.-- each --it was long time
ego -- the equipment supposed to built in Asia, the manager -- I was one
outside consultant -- told me that we can not use that expensive parts,
my Chinese
On 10 October 2016 at 09:35, Charles Steinmetz
wrote:
> Poul-Henning wrote:
>
> And for voltage references, "pre-owned" is likely to mean "better".
>>
>
> Perhaps, but third-world recyclers are not known for gentle treatment
> during the parts removal process.
I had some cheap ($10) GPS receive
Poul-Henning wrote:
And for voltage references, "pre-owned" is likely to mean "better".
Perhaps, but third-world recyclers are not known for gentle treatment
during the parts removal process. There have been lots of videos and
descriptions on the web that are truly eye-opening. The process
I think those voltage reference ICs have been done to death over on EEVBlog
and the general consensus is that they work very well, the only counterfeit
part is the 'calibration' sheet that comes with them, they seem to be done
on a photocopier.
They also appear to exceed the accuracy specification
In message
, "Dr. David Kirkby (Kirkby Microwave Ltd)" writes:
>When I looked on
>eBay, the board was £2.25 delivered from China. The Analog Devices website
>shows the chip having a budgetary price of $7 in quantities of 1000 or
>more. So if the chips are $7 (£5-£6), how can they make a
How do you know the product you "paid more money" for is
not a counterfeit?
The best you can do is to go to a source that you trust,
for some reason, and exercise a right of return.
For instance, I have found counterfeit capacitors in
products from HP (in power supplies). They looked like
Nichic
On 8 October 2016 at 02:13, Hal Murray wrote:
> > They get counterfeited a *lot*.
>
> Is that true for relatively obscure things like the Prologix GPIB
> controllers
> that aren't high volume?
>
I would have thought the Prologix GPIB controllers no more obscure than the
NI GBPIB-USB controllers,
Hi
Yes indeed it is true of pretty much ever single GPIB adapter out there. The
issue is that the innards are not terribly complex and the sell price on eBay
is fairly high compared to the material content.
Bob
> On Oct 7, 2016, at 9:13 PM, Hal Murray wrote:
>
>> They get counterfeited a *lo
An example which likely has similar volume to the Prologix is the saleae
logic analyzer, google "saleae clone".
On Fri, Oct 7, 2016 at 9:13 PM, Hal Murray wrote:
> > They get counterfeited a *lot*.
>
> Is that true for relatively obscure things like the Prologix GPIB
> controllers
> that aren't
> They get counterfeited a *lot*.
Is that true for relatively obscure things like the Prologix GPIB controllers
that aren't high volume?
--
These are my opinions. I hate spam.
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time-nuts mailing list -- time-nuts@febo.com
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Hi
One thing to be *very* careful of on all of these adapters:
They get counterfeited a *lot*. All bets are off when you get one that is not
the
“real deal”. Far better to source it from a trussed source for a bit more money
than
to take a risk on a dubious clone.
Bob
> On Oct 7, 2016, at 7:
On 10/07/2016 12:32 PM, George Dubovsky wrote:
> I have a real NI GPIB-USB-HS if he'd be interested in that. Prolly cheaper
> than a new Prologix.
And supports real SRQ interrupts, too
--
davyg...@pobox.com:~$ make war
make: *** No rule to make target `war'. Stop.
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Description:
That's interesting... My memory chips must be experiencing bit failures
lately. This isn't the first time it's happened over the past few weeks.
I sit (more comfortable than standing) corrected.
Thanks for the admonition.
Dave M
Bob Camp wrote:
Hi
That’s been my experience as well over the l
Hi
That’s been my experience as well over the last few decades, based on using a
variety
of adapters.
Bob
> On Oct 7, 2016, at 5:36 PM, John Miles wrote:
>
>> thanks for the offer, Geo
>> We've already found a new Prologix unit at much less than retail. I'm not
>> familiar with the NI units
> thanks for the offer, Geo
> We've already found a new Prologix unit at much less than retail. I'm not
> familiar with the NI units, and have seen postings that they are
> tempermental with some instruments.
I've mentioned before that NI adapters are the _least_ temperamental of all of
them.
thanks for the offer, Geo
We've already found a new Prologix unit at much less than retail. I'm not
familiar with the NI units, and have seen postings that they are
tempermental with some instruments. I know the Prologix units work with the
friend's equipment; that's why we specifically went
I have a real NI GPIB-USB-HS if he'd be interested in that. Prolly cheaper
than a new Prologix.
geo
On Fri, Oct 7, 2016 at 3:15 PM, Dave M wrote:
> Does anyone happen to have a Prologix USB-GPIB Controller available for
> sale? One of my friends needs one for his bench. He is retired and on a
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