50 KV optocoupler

You obviously have gone to the wrong places, your comments are way off.

Two months ago I was treated for Bell's palsy, the diagnose covering CT, MR, ultrasound scans. I was amazed of the equipment they could pull out

The MR scanning was incredible noisy, during the scan I was wondering how they cope with the large magnetic fields and the stresses on the windings

Cheers

Klaus

How would you seal the ends of the PVC tube, to let light in and out but keep the Fluorinert in? How do you mount that assembly and couple light in and out?

How do you keep the Fluorinert from diffusing through the PVC?

What's the purpose of the Fluorinert anyhow?

Why not a solid light pipe? We were just at Tap Plastics. They have all sorts of round and square acrylic and polycarb rod. I shined a small flashlight through some 1-foot pieces, and they make great light pipes. You could glue an LED to one end and a TO-92 photodiode flat onto the other end. Mount it with plastic cable clamps maybe.

Or buy the HFBR parts, all done.

--

John Larkin         Highland Technology, Inc 
picosecond timing   precision measurement  

jlarkin att highlandtechnology dott com 
http://www.highlandtechnology.com

Intellectually speaking, John S. and John Larkin still live in caves, and kill bears with rocks to get the fat for their bear-fat lamps.

Fred Bloggs isn't perfect, but he's operating at a rather more advanced intellectual level - which John S. and John Larkin can't really follow, and find a bit threatening.

--
Bill Sloman, Sydney

Not before he has his way with the bear!

Jamie

With every flop of that jaw of yours, gets you closer to that bear trap.

Jamie

These have been around for a long time, I'm sure they'd still be manufactured 7 years from now.

Cheers

On Sunday, 1 February 2015 14:05:39 UTC+11, Maynard A. Philbrook Jr. wrote :

nd kill bears with rocks to get the fat for their bear-fat lamps.

intellectual level - which John S. and John Larkin can't really follow, an d find a bit threatening.

What you read was produced by the action of my fingers. You may need a spee ch-to-text program to generate your posts, but I was taught to write and le arned to type. Granting the inanity of what you post, this might have been too hard for you, or it could be a skill that you've managed to lose as you 've got older.

Whichever, you've stepped into a trap that you set for yourself.

--
Bill Sloman, Sydney

Fred Bloggs may be able to talk to some women, which opens up possibilities that you probably aren't aware of.

--
Bill Sloman, Sydney

it's a lot better than $25 and you don't have to buy a thousand

On a sunny day (Sat, 31 Jan 2015 15:29:28 -0800) it happened Joerg wrote in :

Well, I was not dreaming when I was working in the electronics department of a big university hospital. We had everything and designed everything. You?

Well well well, those professors that were featured in that documentary will be grateful for your understanding.. Not.

BTW there is now a thing going at least in Germany to strongly reduce transfusions so as to reduce those complications.

As to increased life expectancy, sure you like to claim that, but in reality there are other facts so as less heavy work, less exposure to dangerous situations, better hygiene, what not. Less air pollution, genetics, people get longer too. 'merricans get fatter and fatter and soon will just roll-along.. No more need for cars, even less air-pollution, baseball will get a different meaning too.

That is the one where you had to go to fix that interference problem, few years ago, air travel costs money, was it cellphones?

On a sunny day (Sat, 31 Jan 2015 15:44:34 -0800 (PST)) it happened Klaus Kragelund wrote in :

Well,

's_palsy Corticosteroids can cause cancer.

They use milder terms on the package.

On a sunny day (Sat, 31 Jan 2015 18:17:18 -0800 (PST)) it happened Bill Sloman wrote in :

Anybody with real life experience in electronics must be threatening to you old baxi-sandals. :-)

On a sunny day (Sat, 31 Jan 2015 21:20:37 -0800 (PST)) it happened Bill Sloman wrote in :

You need brain action too. :-)

You need that to flap your jaw as well. How far up the brain stem you need to go to produce the kind of action we are talking about could be discussed, but probably not with you are Jamie.

--
Bill Sloman, Sydney

And what would Jan Panteltje count as "real life experience in electronics"? Do tell.

--
Bill Sloman, Sydney

That's the kind I kicked out of a design in the 90's on account of their high cost. Later the service guy was complaining that I made him the Maytag man.

--
Regards, Joerg 

http://www.analogconsultants.com/

So what did you design in medical equipment, what did it cost, and how many are sold per year?

I left university the millisecond I had my degree in hand, turned down a Ph.D. track. Because I cannot stand bureaucracy. I went on into industry and designed lots of medical gear, most of it ultrasound machine front ends and other analog sections. It made my employers and clients tons of profit and ise ervy useful for patients, in contrast to what you think of medical.

Now that I live in America and Obamacare came about med tech has shriveled up a bit and I am now mostly working in aerospace and industrial electronics.

What do I care what they say?

I live in America and am pretty healthy. Partly on account of my mountain bike and my old road bike (has a Gazelle frame, BTW). Where I live we have way less pollution than in or near the Randstad area where IIRC you live.

Nope. I designed that one from scratch, it passed all tests including susceptibility right away and you can stand right next to it even with a GSM phone (which isn't legal to do though in most hospitals).

--
Regards, Joerg 

http://www.analogconsultants.com/

On a sunny day (Sun, 01 Feb 2015 07:53:39 -0800) it happened Joerg wrote in :

Whatever the department wanted, often very much non-existing stuff for experiments or things students for their PhD thought they needed. If it existed it would already be available. We also repaired stuff, from simple spectrometers to mass spectrometers, just to keep things running. The last thing I had on the table was for DNA analysis, electro-migration, electro-forese.

0bombma now wants everybody's DNA so to make it easier to crack down on criminals I suppose, or maybe so it can be patented, a real control freak. Next will be your chip implant under your cranium.

Well, if you crash of the mountain with your Gazelle bike (I once had a Gazelle bike) and they give you that transfusion because you look a bit pale, and then die from it after getting some infection from something that your immune system would normally have no problems with, well no body has complained back from heaven or hell so far as far as I know, no feedback, the malpractice goes on.

I am as almost a far away from the randstad as is possible without leaving the country, and as far away from the air polluted south. Its called Friesland here, language is a bit different too. Lots of green:

Good, then why did you go?

That's not really fair: the $2 gets you a FO transmitter (or receiver: the listing is unclear) in tiny quantities. What you want, is the quantity price for one transmitter, one receiver, and 50 kV of connector/cable assembly.

What kind of 'setup' uses digital communication and costs under $2?