Driver to drive?

Le mardi 15 avril 2014 05:57:11 UTC+2, panfilero a écrit :

I'm interested in sensing AC and DC currents, 0-8A nominally, but up to 160A for 10msec current surges from both AC and DC sources... I'm after the best resolution I can get... I don't know if it's possible to do this for both AC and DC off the same current sense circuit... I was thinking a shunt through a current sense amplifier then to an RMS to DC converter IC... but I'm not sure if this is the best approach... any suggestions?



much thanks!

Hello !

In such situation i may say "Please avoid any design based on a resitor shunt". Although most of engineers are thinking about shunts, thinking it may produce a clean and low cost PCBA, in fact it will not ! believe me, chosing a shunt for such current will drive you crazy ... you are warned.

The only best choice for

- DC/AC large range of currents,
- sustain surge current,
- galvanic insulation,
- ...etc

is a Hall effect closed loop CT. --> try googling with.

Habib.

 

[Martin Brown]

On 15/04/2014 00:15, Mike Perkins wrote:

On 15/04/2014 00:08, mroberds@att.net wrote:
Mike Perkins <spam@spam.com> wrote:

However the consignment has gone to a "shop" and is now stuck there.

Call the "shop" and ask them. The UPS website is always going to say
that they want a photo ID, retinal scan, and DNA sample. The person at
the shop who is actually going to give you your package (or not) tends
to have less strict requirements. You might have to present some kind
of non-photo ID, like maybe something with your address on it.

The shop is a corner shop, and they intend stick to UPS rules. TBH I
don't blame them.

Don't you have a passport or modern drivers license to hand?

My drivers license is the dog eared old pink paper sort with no photo at
all and has been through the wash a couple of times. My passport if OK
but I generally do not have it with me when travelling in the UK.

Yes I can get my photo-ID but it's not at hand at the moment, I can
have something sent to me, but this is all very silly and myopic.

Note to everyone else: older UK driver's licenses don't have photos on
them, and they don't expire for a long time, so it's legally possible
to go through your day without having a government photo ID with you.

My Mother didn't have any photo-ID for her later life as she wasn't
going to drive, or catch a plane anywhere. In the UK there is no
requirement to carry photo-ID yet, although there are rumbling that
might happen at some point.

To some extent a photo ID card in the UK would be helpful. It is insane
that you have to turn up with a utility bill (which could be faked in
about ten minutes) and birth certificate or similar to "prove" who you
are. The latter says explicitly on it "Not suitable as proof of ID".

It adds inslut to injury that the only people inconvenienced by the
banks anti money laundering rules are legitimate customers. The bad guys
can afford top dollar forged ID to get their accounts opened.

The previous government conflated a national ID card with a dangerously
invasive and insecure database which killed it stone dead. The current
one is doing something similarly dangerous with health records and an
opt out form delivered to every home disguised as a takeaway menu!

Has anyone else been in the same situation and how did they overcome
the problem?

The closest thing I've done is to pick up something at the depot that
was addressed to my boss. As I recall, my boss had to write and sign
a letter authorizing me to pick it up, and I had to show that letter and
my ID (my driver's license, which had a photo) to the depot staff. This
was in the US.

Many thanks.

I have never had any issues with any other carrier, and have often
picked things up from local depots. UPS seem to be unique in their
requirement.

And inflexible.

It annoys me when they put it into some remote depot or even better the
excuse "we attempted to deliver it but you were out" when the reality
was that we were cut off from the outside world by large snowdrifts!

We were most definitely "IN".

--
Regards,
Martin Brown

 

[John Devereux]

Mike Perkins <spam@spam.com> writes:

On 14/04/2014 23:59, haiticare2011@gmail.com wrote:
On Monday, April 14, 2014 6:09:57 PM UTC-4, Mike Perkins wrote:
I ordered components from DigiKey a short while ago.



Unfortunately no one was in when UPS delivered.



The UPS UK website says that 3 delivery attempts will be made.



However the consignment has gone to a "shop" and is now stuck there.

Wierd, never heard of a UPS "shop".

UPS require "government photo-ID" for me me to retrieve the consignment

from the shop and I currently don't have any at hand and UPS won't

attempt any more deliveries.



Yes I can get my photo-ID but it's not at hand at the moment, I can have

something sent to me, but this is all very silly and myopic.



Has anyone else been in the same situation and how did they overcome the

problem?



--

Mike Perkins

Video Solutions Ltd

www.videosolutions.ltd.uk

tough. I have to admit - some parts of the story dont make sense. You say that
UPS will try 3X, but they tried once and now package is stuck at their shop. ???

Sorry. The UPS website says 3 times, and I have conflicting reasons
from DigiKey and UPS-UK why they only tried once and won't try again.

UPS UK are useless t*ssers especially if you are the recipient rather
than the sender.

One idea is systematically make phone calls higher and higher in UPS.

I have been given another number by DigiKey for UPS here and will try
again in the morning.

I would deal through Digikey, at least you can talk to them and
ultimately it is their responsibility, they will have to resend them if
necessary. You paid for the goods and have not received them. You
probably paid by credit card so that is another line of defence.

--

John Devereux

 

[John Devereux]

"Maynard A. Philbrook Jr." <jamie_ka1lpa@charter.net> writes:

In article <AbSdnU4ZFMQpwdHOnZ2dnUVZ7rqdnZ2d@bt.com>, spam@spam.com
says...

I ordered components from DigiKey a short while ago.

Unfortunately no one was in when UPS delivered.

The UPS UK website says that 3 delivery attempts will be made.

However the consignment has gone to a "shop" and is now stuck there.

UPS require "government photo-ID" for me me to retrieve the consignment
from the shop and I currently don't have any at hand and UPS won't
attempt any more deliveries.

Yes I can get my photo-ID but it's not at hand at the moment, I can have
something sent to me, but this is all very silly and myopic.

Has anyone else been in the same situation and how did they overcome the
problem?

Sure, the best thing to do is have the package sent elsewhere next
time.

You would think so, but I absolutely would not do that, in the UK they
will invoice *whoever* is at that address for all the customs duty. Does
not matter that all the invoices are addressed to you, they look up the
destination and invoice *them*. Then persue *them* for payment, no way
to reverse it. Caused a lot of trouble for us when we drop-shipped to a
contract assembler!

I have the option to have it sent to my work location, the guy at the
docks just signs for everything that comes in. Just put a ATT: xxxxxxx,
also if you pick those cheap rates, they may even deliver sooner than
normal, over making you wait for the maximum delivery time!

Jamie

--

John Devereux

 

[John Fields]

On Mon, 14 Apr 2014 23:09:57 +0100, Mike Perkins <spam@spam.com>
wrote:

I ordered components from DigiKey a short while ago.

Unfortunately no one was in when UPS delivered.

The UPS UK website says that 3 delivery attempts will be made.

However the consignment has gone to a "shop" and is now stuck there.

UPS require "government photo-ID" for me me to retrieve the consignment
from the shop and I currently don't have any at hand and UPS won't
attempt any more deliveries.

Yes I can get my photo-ID but it's not at hand at the moment, I can have
something sent to me, but this is all very silly and myopic.

Has anyone else been in the same situation and how did they overcome the
problem?

---
I've had the same problem in reverse, in that we were the wrong shop
that UPS delivered to.

A call to UPS cleared up the problem in that they came and picked up
the package and - ostensibly - delivered it to the correct
recipients.

Since UPS is - I think - contractually bound to deliver packages to
the addresses specified by the senders, UPS is responsible for
delivery errors and, since they know where the package is and where
it should be, the onus is on them to retrieve it and get it to you.

In the short term, if you need the parts quickly, bite the bullet
and schlep your photo ID down to the shop where your parts are, then
follow up with a nice letter to DigiKey outlining your problems with
UPS.

John Fields

 

[Mike Perkins]

On 15/04/2014 11:12, Martin Brown wrote:

On 15/04/2014 00:15, Mike Perkins wrote:
On 15/04/2014 00:08, mroberds@att.net wrote:
Mike Perkins <spam@spam.com> wrote:

However the consignment has gone to a "shop" and is now stuck there.

Call the "shop" and ask them. The UPS website is always going to say
that they want a photo ID, retinal scan, and DNA sample. The person at
the shop who is actually going to give you your package (or not) tends
to have less strict requirements. You might have to present some kind
of non-photo ID, like maybe something with your address on it.

The shop is a corner shop, and they intend stick to UPS rules. TBH I
don't blame them.

Don't you have a passport or modern drivers license to hand?

My drivers license is the dog eared old pink paper sort with no photo at
all and has been through the wash a couple of times. My passport if OK
but I generally do not have it with me when travelling in the UK.

Not at hand at the moment - no.

Yes I can get my photo-ID but it's not at hand at the moment, I can
have something sent to me, but this is all very silly and myopic.

Note to everyone else: older UK driver's licenses don't have photos on
them, and they don't expire for a long time, so it's legally possible
to go through your day without having a government photo ID with you.

My Mother didn't have any photo-ID for her later life as she wasn't
going to drive, or catch a plane anywhere. In the UK there is no
requirement to carry photo-ID yet, although there are rumbling that
might happen at some point.

To some extent a photo ID card in the UK would be helpful. It is insane
that you have to turn up with a utility bill (which could be faked in
about ten minutes) and birth certificate or similar to "prove" who you
are. The latter says explicitly on it "Not suitable as proof of ID".

It adds inslut to injury that the only people inconvenienced by the
banks anti money laundering rules are legitimate customers. The bad guys
can afford top dollar forged ID to get their accounts opened.

Spot on.

http://www.dailymail.co.uk/news/article-2273801/Bureau-change-boss-Sammy-Kurd-jailed-laundering-170MILLION-criminals-cash-bogus-store-upmarket-Notting-Hill.html

It always amuses me how short-sighted politicians are when it comes to
criminals circumnavigating laws.

The previous government conflated a national ID card with a dangerously
invasive and insecure database which killed it stone dead. The current
one is doing something similarly dangerous with health records and an
opt out form delivered to every home disguised as a takeaway menu!

I thought it was mainly defeated because of cost, and cards would be
optional, well initially of course!

Has anyone else been in the same situation and how did they overcome
the problem?

The closest thing I've done is to pick up something at the depot that
was addressed to my boss. As I recall, my boss had to write and sign
a letter authorizing me to pick it up, and I had to show that letter and
my ID (my driver's license, which had a photo) to the depot staff. This
was in the US.

Many thanks.

I have never had any issues with any other carrier, and have often
picked things up from local depots. UPS seem to be unique in their
requirement.

And inflexible.

It annoys me when they put it into some remote depot or even better the
excuse "we attempted to deliver it but you were out" when the reality
was that we were cut off from the outside world by large snowdrifts!

We were most definitely "IN".

The last time we had a snow drift, well was 20 years ago, if you call 1
foot of snow a drift!


--
Mike Perkins
Video Solutions Ltd
www.videosolutions.ltd.uk

 

[Mike Perkins]

On 15/04/2014 03:55, Spehro Pefhany wrote:

On Mon, 14 Apr 2014 23:09:57 +0100, the renowned Mike Perkins
spam@spam.com> wrote:

I ordered components from DigiKey a short while ago.

Unfortunately no one was in when UPS delivered.

The UPS UK website says that 3 delivery attempts will be made.

However the consignment has gone to a "shop" and is now stuck there.

UPS require "government photo-ID" for me me to retrieve the consignment
from the shop and I currently don't have any at hand and UPS won't
attempt any more deliveries.

Yes I can get my photo-ID but it's not at hand at the moment, I can have
something sent to me, but this is all very silly and myopic.

Has anyone else been in the same situation and how did they overcome the
problem?

Could Digikey tell them to release it? Maybe pick up the (Skype) phone
and ask.

Most carriers are sensitive and carry out the shippers instructions.

In this case it seems UPS's tail is wagging the dog and DigiKey just
cite UPS's rules.

--
Mike Perkins
Video Solutions Ltd
www.videosolutions.ltd.uk

 

[John Fields]

On Tue, 15 Apr 2014 11:53:02 +0100, Mike Perkins <spam@spam.com>
wrote:
..
..
..

It always amuses me how short-sighted politicians are when it comes to
criminals circumnavigating laws.

---
Not short-sighted at all, since what they're doing is laying the
groundwork to secure their own futures.

 

[Kennedy]

On 15-Apr-14 7:12 AM, haiticare2011@gmail.com wrote:

I can't give an exhaustive list, due to time constraints, but here is the first. It is:

The Human Genome Project

This has been a dismal failure. A worm has similar DNA to ours. Here is just one
brief view of it: I have heard supposedly intelligent PhD's say that "everything
about us is determined by DNA." And VC's went along with this hoax.

But even a high school student in Biology 1A knows that the genotype and a
phenotype both interact to produce the organism.

Without going into details, the perpetrators of the HGP lured investors by
promising that patentable DNA sequences would predict cancer, and the like.
But any cancer researcher knows that only a small percentage are linked to
genetics.

===========

I'm open to any suggestions of further scientific flim-flam. On my list are
AI, medical research, much nano-technology, alternative energy, climate change,
SSRI drugs, medical treatments, IPhone, IOT...

Homeopathy - this is hilarious stuff:

<http://www.newsbiscuit.com/2011/09/09/homeopathic-leak-threatens-catastrophe/>

 

That is absolutely not true. The Bible says NOTHING on the arrangement of

the solar system. What happened was that the Catholic church accepted

large amounts of Aristotelian beliefs - including the shape/organization

of the solar system. It was the ancient Greeks, not the Christians who put

the earth at the center of the universe.

OK - interesting. So you could still say it was the Church's position. In any
case, since the church interpreted the Bible, and no one read it, then the
"picture" of the earth's place was joined at the hip with the Bible.
My argument is primarily social - the power of the church vs. materialist
science.
In other words, what I was saying is that the rebellion against the church that
has constituted materialist science - Copernicus, Galileo, Darwin - has been
used as a general argument against the Bible.
Because, if you begin to question the church's authority, then it's a short
step to question the authority of scripture as well. As in, "If you were wrong
about the solar system and life on the earth, why should we believe you about
the Bible as well?"
And that brings up the raft of Dead Sea Scrolls, Nag Hammadi finds, and so
forth.
With all this, I do feel that there is a loss of the inner truth of man's
existence.

 

On Monday, April 14, 2014 11:47:33 PM UTC-4, John Larkin wrote:
<snip>

More of your damned fool ignorance:

http://www.mmh.com/article/walkie_lift_trucks_a_good_walk_optimized

For the really out sized stuff, they just jack up one end of the pallet and shove a wheel set under it.

 

Friends are more important than diet or anything else!

Explain that, materialist scientists!



When I see things like that, I am hesitant to dismiss homeopathy completely.



When you write that, I have no hesitation in dismissing you completely.

I don't blame you! Homeopathy is a hard pill to swallow! But so are the health
benefits of networks of friends!

Someone said that intelligence is the ability to hold two differing ideas in
mind at the same time. In my defense, that is what I am forced to do in some
cases. In the case of Homeopathy, I just keep an open mind.

Quantum mechanics is a good example of what could be dismissed completely. It
just violates ordinary principles of thought. It just rocks you back on your
heels and forces you to admit your rational means of thought is worthless in
some major respects.

 

[mike]

On 4/15/2014 3:49 AM, John Fields wrote:

On Mon, 14 Apr 2014 23:09:57 +0100, Mike Perkins <spam@spam.com
wrote:

I ordered components from DigiKey a short while ago.

Unfortunately no one was in when UPS delivered.

The UPS UK website says that 3 delivery attempts will be made.

However the consignment has gone to a "shop" and is now stuck there.

UPS require "government photo-ID" for me me to retrieve the consignment
from the shop and I currently don't have any at hand and UPS won't
attempt any more deliveries.

Yes I can get my photo-ID but it's not at hand at the moment, I can have
something sent to me, but this is all very silly and myopic.

Has anyone else been in the same situation and how did they overcome the
problem?

Carry the photo id with you at all times. Dunno where you live, but
here in the land that used to be free, it's necessary for many transactions.

---
I've had the same problem in reverse, in that we were the wrong shop
that UPS delivered to.

A call to UPS cleared up the problem in that they came and picked up
the package and - ostensibly - delivered it to the correct
recipients.

Since UPS is - I think - contractually bound to deliver packages to
the addresses specified by the senders, UPS is responsible for
delivery errors and, since they know where the package is and where
it should be, the onus is on them to retrieve it and get it to you.

In the short term, if you need the parts quickly, bite the bullet
and schlep your photo ID down to the shop where your parts are, then
follow up with a nice letter to DigiKey outlining your problems with
UPS.

John Fields

 

On Tuesday, April 15, 2014 12:17:04 PM UTC-4, Phil Hobbs wrote:

On 04/15/2014 12:00 PM, bloggs.fredbloggs.fred@gmail.com wrote:

On Monday, April 14, 2014 11:47:33 PM UTC-4, John Larkin wrote:

snip



More of your damned fool ignorance:



http://www.mmh.com/article/walkie_lift_trucks_a_good_walk_optimized



For the really out sized stuff, they just jack up one end of the pallet and shove a wheel set under it.





Good luck pulling a 7500 pound load up the camber of the street with a

manual truck. Or stopping it if it decides to go down.

It's motorized, Sherlock. And there are these things called *ramps*. Forklifts are deigned for stacking, trucks are used for pulling on the level.

Cheers



Phil Hobbs



--

Dr Philip C D Hobbs

Principal Consultant

ElectroOptical Innovations LLC

Optics, Electro-optics, Photonics, Analog Electronics



160 North State Road #203

Briarcliff Manor NY 10510



hobbs at electrooptical dot net

http://electrooptical.net

 

LIBERAL HOAX #3 - Carcinogens

I want to add the area of carcinogens in the environment. This piece of flim-flam
is beloved of the government because they can "protect us" and make us passive
in the face of a major threat. Centralized government is desperate to find a way
to be useful, because it makes them look good, and maybe in some there is a
twinge of guilt about their theft of money from the economy.

I mean, it is more attractive to say to your grand-children, "I helped save a
million people from environment-caused cancer," than "I stole millions based on
pure hokum, and now we have this nice house?"

The carcinogens hoax has been used to drive major parts of the US economy out of
business - and to China. Examples abound, but nearly all our vitamins are made
in China, because regulations have forced US manufacturers out of business,
based on carcinogens and other myths.

The myth of carcinogens has been one of the more destructive of the modern
scientific scams fostered by the government-academic complex.

 

On Tuesday, April 15, 2014 12:22:00 PM UTC-4, John Larkin wrote:

On Tue, 15 Apr 2014 09:00:17 -0700 (PDT), bloggs.fredbloggs.fred@gmail.com

wrote:



On Monday, April 14, 2014 11:47:33 PM UTC-4, John Larkin wrote:

snip



More of your damned fool ignorance:



http://www.mmh.com/article/walkie_lift_trucks_a_good_walk_optimized



For the really out sized stuff, they just jack up one end of the pallet and shove a wheel set under it.



The pallets and machines are easy to move, once they are flat on the floor. The

problem was unloading the truck.



https://dl.dropboxusercontent.com/u/53724080/Gear/PnP/7500_Lbs.JPG



My folks had fun unloading this stuff, and are looking forward to setting it up

and learning how to run it all.



You are perpetually hostile and negative and crabby. That can't be healthy. Or

fun.





--



John Larkin Highland Technology Inc

www.highlandtechnology.com jlarkin at highlandtechnology dot com



Precision electronic instrumentation

There are these things, Sherlock :

http://www.southworthproducts.com/content1873.html

None of this requires an 80' flatbed transport to the site. When you call the forklift people they're going to rent you a forklift because it's all they know.

 

[Chris Jones]

On 15/04/2014 10:09, Clifford Heath wrote:

On 05/04/14 00:25, Chris Jones wrote:
On 04/04/2014 19:44, Clifford Heath wrote:
[snip]
http://cjh.polyplex.org/electronics/fox/Oscillator.brd.png
http://cjh.polyplex.org/electronics/fox/Oscillator.sch.png

I note that you are taking the output via C9 from the top of the tank,
which is a very sensitive node. I hope it is going to something with
really low loss, or that could be a cause for reducing the Q and
tendency to oscillate. I would suggest taking the output from some
low-impedance node, such as a tap on the inductor, or the top of R6 or
something like that.

I was taking signal off the tank because the signal level is 20dB better
than at the emitter, while the spurious levels are the same.

Yes, fair enough. If you have a load with very high impedance (the gate
of a very tiny fet perhaps) then taking the output from the large swing
of the tank can give you the best phase noise floor at high offsets, but
that load needs to be very high impedance. With a low impedance load it
can stop it oscillating.

I've switched the design to a tap off the inductor, which is still clean
but much lower impedance (less tank load). I need to re-do the layout
before retesting at a higher frequency, but all the symptoms I am seeing
are explained by excess loading (or various sorts) on the tank.

I just got bitten yesterday by the very high Cbe of the 2N2222. 20pF
indeed! I'll be more careful using those in future

Thanks everyone for your help.

 

[Lasse Langwadt Christense]

Den tirsdag den 15. april 2014 17.47.09 UTC+2 skrev Jon Elson:

John Larkin wrote:







We ordered a Universal pick-and-place machine. Wound up getting a

dual-head one sort of by accident.







It's weird that a machine that places parts the size of ants has to weigh

five tons and comes on 11 pallets.

Geez, I had no idea they were that heavy. Our Philips CSM84 is 5 x 7 feet,

and 5' tall, and weighs something like 1700 Lbs. It has 3 heads and can

do up to 5000 PPH or so using multiple heads with mechanical alignment

jaws. I didn't get the model with vision.

moving stuff fast and accurate requires some pretty big forces

visited a pcb facture many years ago looked like the base plate for the drilling machine was basically a +20cm thick slab of granite

-Lasse

 

[George Herold]

On Tuesday, April 15, 2014 12:29:38 PM UTC-4, haitic...@gmail.com wrote:

LIBERAL HOAX #3 - Carcinogens



I want to add the area of carcinogens in the environment. This piece of flim-flam

Huh? Asbestos is nasty stuff.

George H.

is beloved of the government because they can "protect us" and make us passive

in the face of a major threat. Centralized government is desperate to find a way

to be useful, because it makes them look good, and maybe in some there is a

twinge of guilt about their theft of money from the economy.



I mean, it is more attractive to say to your grand-children, "I helped save a

million people from environment-caused cancer," than "I stole millions based on

pure hokum, and now we have this nice house?"



The carcinogens hoax has been used to drive major parts of the US economy out of

business - and to China. Examples abound, but nearly all our vitamins are made

in China, because regulations have forced US manufacturers out of business,

based on carcinogens and other myths.



The myth of carcinogens has been one of the more destructive of the modern

scientific scams fostered by the government-academic complex.

 

[Martin Brown]

On 15/04/2014 13:20, mike wrote:

On 4/15/2014 3:49 AM, John Fields wrote:
On Mon, 14 Apr 2014 23:09:57 +0100, Mike Perkins <spam@spam.com
wrote:

I ordered components from DigiKey a short while ago.
Unfortunately no one was in when UPS delivered.
The UPS UK website says that 3 delivery attempts will be made.
However the consignment has gone to a "shop" and is now stuck there.

UPS require "government photo-ID" for me me to retrieve the consignment
from the shop and I currently don't have any at hand and UPS won't
attempt any more deliveries.

Yes I can get my photo-ID but it's not at hand at the moment, I can have
something sent to me, but this is all very silly and myopic.

Has anyone else been in the same situation and how did they overcome the
problem?

Carry the photo id with you at all times. Dunno where you live, but
here in the land that used to be free, it's necessary for many
transactions.

He is in the UK and thanks to the Magna Carta there is no need to carry
government issued photo ID around with you here. New drivers licenses
and passports have a photo but there is no compulsion to carry either.

Proof of ID here relies on a haphazard list of random documents
including utility bills and existing bank cards. It is barking mad.

Previous government tried to issue ID cards but cocked it up big time!

Unless he can find his passport the UPS parcel is stuck in the shop.

--
Regards,
Martin Brown