EEV Blog #263 - Laser Probes

[Herr R aus B]

HAR HAR HAR! Well done and very plausible indeed!

[Rerouter]

was caught off guard when he said directly proportional to flux density, from what i understand flux density is directly related to current, not voltage,

still while smashing my head on the patent office wall i stumbled across a similar effect, that while i am yet to understand it sounds like what they are doing,

http://www.tandfonline.com/doi/abs/10.1080/00150198708008217#preview

[FreeThinker]

Apparently they were developed to test the charge on flux capacitors, you really don't want to get too close to those.

[G7PSK]

The joke may be on all you unbelievers out there. Laser probes really do exist out in the wild, here is the link to their web site.

 http://www.laserprobeinc.com/


The pdf is on the theory of using laser to measure high voltages.

[bfritz]

If anyone decides to try and build a set of the laser probes, you will need some Write Once Read Never memory.  I am the sole source in the US for WORN memory, but my prices are quite reasonable!  The really nice thing about WORN memory is that the clock specs are easily achieved.  It is so easy to use, I have never had an instance of anyone being unable to meet the specs for setup time.  (t_setup = 150ns +/- whatever)

So, feel free to email me for your WORN memory needs!  Available in DIP and surface mounts, in 1-128 bit word sizes, as well as every serial access version known, as well as several unknown versions.

[NiHaoMike]

Using lasers to measure magnetic fields is nothing new. Sony's Minidisc used that technology to increase storage density. The laser was used to read the data by detecting polarization twist from the localized magnetic fields as well as write the data by heating the disc up to the Curie point so it can be remagnetized.

[Excavatoree]

If anyone decides to try and build a set of the laser probes, you will need some Write Once Read Never memory.  I am the sole source in the US for WORN memory, but my prices are quite reasonable!  The really nice thing about WORN memory is that the clock specs are easily achieved.  It is so easy to use, I have never had an instance of anyone being unable to meet the specs for setup time.  (t_setup = 150ns +/- whatever)

So, feel free to email me for your WORN memory needs!  Available in DIP and surface mounts, in 1-128 bit word sizes, as well as every serial access version known, as well as several unknown versions.

I wonder if TI will continue this National Semocinductor part:
http://www.national.com/rap/Story/WOMorigin.html

[alm]

The WOM wasn't a National part, was it? According the datasheet, it was from Signetics, now NXP. Try asking your local NXP rep for samples and lead time .

[G7PSK]

There is a new anti virus system available now for computers that never needs updates and uses no resources on the computer.

[McMonster]

There is a new anti virus system available now for computers that never needs updates and uses no resources on the computer.

Why not simply use WiFi? We all know that viruses are heavier than other traffic and they fall off the carrier wave.

[Excavatoree]

The WOM wasn't a National part, was it? According the datasheet, it was from Signetics, now NXP. Try asking your local NXP rep for samples and lead time .

Crap, that right.  I read about it in Bob Pease's collumn, so I was thinking National.  Datasheet shows it's a Signetics part, but I bet it's been copied.

[T4P]

Signetics(now phillips) is the original jokers .
However , national just wants to get their hand on the advertisement , looks like something they or TI like .