Breaking News
Comments
Oldest First | Newest First | Threaded View
Page 1 / 2   >   >>
Sheetal.Pandey
User Rank
Manager
Fun
Sheetal.Pandey   6/27/2014 4:57:00 AM
NO RATINGS
I tried answering all the questions. Enjoyed short and seet. Got few of them correct. This is nice. May be we can have these coming on every fridays...good learning.

David Ashton
User Rank
Blogger
Re: Fun
David Ashton   6/27/2014 6:40:08 AM
NO RATINGS
Thanks as always Martin.  Got 3/5 - came short on the language one and no 5.  Should have known better on this one as I have come across it before.  Silly idea though, if they have a unique letter, what's the point of putting the number?

Measurement.Blues
User Rank
CEO
Re: Fun
Measurement.Blues   6/27/2014 11:10:51 AM
NO RATINGS
Sheetal (and everyone else).

I used up my one and only set of questions that were already done. I will tyr to run them one in awhile and perhaps you can help. Please send questions to me at martin.rowe@ubm.com. I'll compile them and post.

speff
User Rank
Rookie
Re: Fun
speff   6/30/2014 12:32:45 PM
NO RATINGS
Got them all- I guess I must be an instrument guy. LOL.

I'm not convinced you can't use type B below 0°C but it has a nasty hook around there where it reverses slope, so a given mV can map to more than one temperature, and nobody that I've seen has bothered to measure the mV below 0°C (the only reason to use such a nasty Pt-Rh thermocouple is if you have to go up to very high temperatures (>1500°C)).

Andrewier
User Rank
Freelancer
Re: Fun
Andrewier   7/3/2014 3:06:00 PM
@David Ashton

I am not sure if we are talking about the same (or my bad English is tricking me), but... let it go:

If the matter is DB x DE connector designations, the first letter (D) is for 'D' type (or trapezoidal), second - A,B...E is for shell size and the number, for the number of pins, of course. For example, we can have DB25 and DB31 - same shell size but different number of pins. The same for the - once ubiquitous - DE9 (PC serial port) and DE15 (aka VGA) .

Regards,

AW.

 

David Ashton
User Rank
Blogger
Re: Fun
David Ashton   7/3/2014 4:23:01 PM
NO RATINGS
@Andrewier....Thanks for that, very well put, I'd forgotten about VGAs.  I guess there  is some sense to it.   Are you sure about DB-31 - I remember seeing a high denisty plug the sdame size as a DB-25 but (like a VGA) with 3 rows of pins, but there would have been a lot more than 31 there....

Andrewier
User Rank
Freelancer
Re: Fun
Andrewier   7/3/2014 5:52:10 PM
NO RATINGS
@David Ashton... I am glad to be of help, despite my limited English abilities. From what I remember ITT Cannon and Amphenol used to have all sorts of D-Subs, 2 and 3 rows kinds with odd countings like 25, 31, 36, 37, 51 and so on. Also interesting to note that shell size grows in order A, B, C, D and suddenly shrinks to E, the smaller of all shells. I remember that was a heavy nightmare to understand the Cannon catalog in order to build a proper P/N for ordering. I used to buy it for geomagnetic sensors, requiring shells and everything else to be made of non magnetic alloys, as brass or aluminum.  It was a real challenge requiring double checking (usually more than one person) to make shure we wouldn't buy very expensive wrong parts!

David Ashton
User Rank
Blogger
Re: Fun
David Ashton   7/3/2014 6:24:09 PM
NO RATINGS
@Andrewier...."despite my limited English abilities."   Please don't apologise, if my command of other languages (French and Afrikaans in my case) was as good as your English, I would be a happy man!

I've also seen D-subs with coax connectors in them as well as pins.  Pretty rare though.  And they are also confusing in what is male and what is female the shells have a different sense to the pins.  I stick with Pins = male which seems right most of the time.   Don't you hate it when you misinterpret the catalog and you end up with wrong parts????

MeasurementBlues
User Rank
Blogger
Re: Fun
MeasurementBlues   7/6/2014 12:06:02 AM
NO RATINGS
@Andrewier, you are correct about the letters indicating connector shaoe and shell size. Click on the image for the source.



 

 

MeasurementBlues
User Rank
Blogger
Re: Fun
MeasurementBlues   7/6/2014 12:10:38 AM
NO RATINGS
@David,

When I worked at the long gone GCA, We used B-side connectors with heavly wires and pins for carrying power to modules uses in wafer-processing stations.



 

Page 1 / 2   >   >>


Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Vetinari Clock: Additional Possibilities
Max Maxfield
8 comments
In my previous blog on the topic of my Vetinari Clock project, we pondered a number of possibilities for the positioning of switches on the front panel, and we ended up with a number of ...

Jolt Judges and Andrew Binstock

Jolt Awards: The Best Books
Jolt Judges and Andrew Binstock
1 Comment
As we do every year, Dr. Dobb's recognizes the best books of the last 12 months via the Jolt Awards -- our cycle of product awards given out every two months in each of six categories. No ...

Engineering Investigations

Air Conditioner Falls From Window, Still Works
Engineering Investigations
2 comments
It's autumn in New England. The leaves are turning to red, orange, and gold, my roses are in their second bloom, and it's time to remove the air conditioner from the window. On September ...

David Blaza

The Other Tesla
David Blaza
5 comments
I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...