Irma

Started by Michael A. Terrell in sci.electronics.design17 hours ago 27 replies

The county will open their hurricane shelters in a few hours. I am trying to decide if I should leave, or stay here. I have yet to have a...

The county will open their hurricane shelters in a few hours. I am trying to decide if I should leave, or stay here. I have yet to have a hurricane in the area that I wasn't without electricity for weeks, or even months. I don't know if I will be able to use a tablet if I go to the shelter, and you may not hear from me for a long time. The county may make it mandatory to evacuate the sub...


Re: IC header cables

Started by David Lesher in sci.electronics.design19 hours ago 7 replies

I've seen what I need: a 16 pin DIP header that plugs into an ordinary IC socket, but one with a ribbon cable coming off it. But now that I...

I've seen what I need: a 16 pin DIP header that plugs into an ordinary IC socket, but one with a ribbon cable coming off it. But now that I want to buy them, I can't find the right terms to define same, at least to please DigiKey or Mouser. I keep getting wrong things. Suggestions? -- A host is a host from coast to coast.................wb8foz@nrk.com & no one will talk to a host th...


Iron nucleus has two loops like a transformer

Started by Alan Folmsbee in sci.electronics.design19 hours ago 5 replies

Electronics design engineers, like me, are interested in answering: Why is Iron magnetic? I have provided a new answer using the shape of...

Electronics design engineers, like me, are interested in answering: Why is Iron magnetic? I have provided a new answer using the shape of the iron nucleus. Naturally, all other elements must be evaluated to see if their nuclei have shapes that also imply ferromagnetism. So the new Periodic Table of Elements: Shape of Each Nucleus is provided... http://pyramidalcube.blogspot.com/ The ...


Red Light Camera Ticket

Started by amdx in sci.electronics.design21 hours ago 102 replies

I just received a notice of a Red light Violation from the rental company I used. I'm from Florida got the ticket from Alabama. It's been...

I just received a notice of a Red light Violation from the rental company I used. I'm from Florida got the ticket from Alabama. It's been more than 20 years since I have had a ticket. I questioned if I really did this, I went to the website and got the pictures and the video. Ya, I did it, but only because of confusion. In Florida our left turn lights are just to the left of the straig...


SSD/Flash card blows up harddisk or part of motherboard ?!

Started by Anonymous in sci.electronics.design22 hours ago 2 replies

Hello, One of my harddisks just failed ? I am not sure yet, but it remains undetected, or partially damage to motherboard. I think what...

Hello, One of my harddisks just failed ? I am not sure yet, but it remains undetected, or partially damage to motherboard. I think what happened was as follows: 1. I may have had haste, I pushed a flash/ssd card into the card reader, but it was stuck in diagonal. Because it has long metal plates on the SSD card, these plates may have caused a short circuit ?!?!?!?! 2. Other possibil...


Batikhaxor

Started by Anonymous in sci.electronics.design1 day ago 4 replies

Nasty...

Nasty people... http://narrative-collapse.com/2017/06/05/batikhaxor-swedish-feminists-accused-of-widespread-sexu al-exploitation-of-young-refugees/ https://youtu.be/kBiAUdnLfpE


Saturday OT : Theodore Judah, engineer

Started by John Larkin in sci.electronics.design1 day ago

https://en.wikipedia.org/wiki/Theodore_Judah Monument in Dutch Flat: https://www.dropbox.com/s/owiekev3bvjcbgr/Landmark.JPG?raw=1 One...

https://en.wikipedia.org/wiki/Theodore_Judah Monument in Dutch Flat: https://www.dropbox.com/s/owiekev3bvjcbgr/Landmark.JPG?raw=1 One of his tunnels, near the crest and the China Wall: https://www.dropbox.com/s/i97yi1t3w2f8lbo/CW_inside.jpg?raw=1 https://www.dropbox.com/s/xw87qpchoqr6dxi/CW_sign.jpg?raw=1 My company started at 320 Judah Street https://www.dropbox.com/s/o...


Battery powered 'scopes

Started by George Herold in sci.electronics.design1 day ago 3 replies

Hi, quick question: Does a battery powered 'scope have inputs that are isolated from each other? Differential inputs? And if so is there a...

Hi, quick question: Does a battery powered 'scope have inputs that are isolated from each other? Differential inputs? And if so is there a cheaper model number to look at? TIA George H.


Anyone here done LLC converters?

Started by Klaus Kragelund in sci.electronics.design1 day ago 6 replies

Hi I am working on a LLC converter like this: http://www.eetimes.com/document.asp?doc_id=1273871 Normally it’s running at 50% duty...

Hi I am working on a LLC converter like this: http://www.eetimes.com/document.asp?doc_id=1273871 Normally it’s running at 50% duty cycle with frequency control loop I am just wondering what happens if I ramp up the duty cycle from 0 to 50%? Won’t that ease up on the inrush current? Assumption is that I can target the resonant point Cheers Klaus


Neodymium magnets are made from Iron

Started by Alan Folmsbee in sci.electronics.design2 days ago 10 replies

The wonderful magic of neodymium magnets is marketed as a rare earth magnet using expensive Nd. But boron is also in it with 63% Iron If...

The wonderful magic of neodymium magnets is marketed as a rare earth magnet using expensive Nd. But boron is also in it with 63% Iron If the Iron is not included, it will not rust of be magnetic. It will be like Copper: nonferrous.


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