Hi.
Have googled this but not come up with much.
I'm thinking if i remove magnetic shielding from CRT then placing a magnet near the screen should show field.
Any one know much about doing this ?
Thanks.
http://www.youtube.com/watch?v=bliKAQMq5Yc (http://www.youtube.com/watch?v=bliKAQMq5Yc)
Tenbatsu, thank you very much :)
Using a lens with a micron thin layer of sandwiched ferro fluid to map external magnetic fields via optic affects of the field on the magnetic fluid. Red, yellow and green radial LED's are spaced evenly; facing inward into the edge of the lens. The light from the LED's warps around the magnets as it passes through the fluid. This is the basic version video with one magnet from youtube user, SirZerp. http://www.youtube.com/watch?v=lD6C6f2nu0U
Check out SirZerp's Channel for more videos on viewing the magnetic fields in real time, they are much better than the "basic version video", and here his more information about this technique, http://www.scribd.com/doc/28943933/Photographing-Magnetic-Lines-of-Constant-Scalar-Potential
The Dynamic Etalon is another method, and was conceived and developed as an economical tool for magnetic research. Basically, this unique lens is a Fabry-Perot Interferometer combined with a modified Hele-Shaw cell. The nano particle mixture within the lens respond dynamically in the presence of a magnetic field.
A real-time holographic representation of magnetic flux is clearly visible to the observer or image recorder, unlike a typical computer generated pattern plotted by software. http://www.youtube.com/watch?v=byxCYvDjFRM
Here is more information on the Dynamic Etalon method, http://www.nanomagnetics.us/dynamic%20etalon.htm
GB
Excellent thanks very much.
Posted in wrong thread, sorry
Gravity block,,,I would like to respond to your message,if I may.
No response from you is necessary unless you wish,,,Having said,
THAT,,,I will continuie,,I worked with crt monitors every day for around 10 years.
So,,I am more inclined toward making the YOKE,,,that sits around the neck of the crt and keeps the color lines/pixels, coming to you STRAIGHT.
The vertical and horizontal signals are pins 13 and 14 going into
your monitor.
The vertical and horizontal frequency of a particular monitor is easy found under system.
Setting the monitor at a frequency,,,horiz and vertical,,then removing the four major wires to the yoke,,,red,blue yellow, and black,,,trust me these make for some very interesting INPUTS.
But it is better to leave the case on the monitor and access the vertical driver chip,,,the hot,,,or horizontal output transistor is,
kinda limited but the vertical chip and possible ?buffer?is something else again.
I am sure a custom Instrument FOR the Magnetics Field can be provided by hacking that old 21" in the dumpster.
Not that I plan to do it,,,,I have more on my plate than I can manage now!!!,,,,,,,i am putting it out there as a real possibility,
of a real Magnet Spectrum Instrument.You could build whatever software conditions you desired.Writing straight to video memory is as old as I am (64),,,,,,even Basic,,I like assembly,
but I am weird.
I will file it for a later days,as I kept a dozen of the big Sony, Hitachi and Mitsubishi,,,,,these are the best,,I know after 8-10 years of repairing them.
Cool days are coming here now to Central Texas,,,I am re-building my forge.
GB,,,,,,,I will go now and thoroughly enjoy your above post.
Cheers
Joe in Texas
Wow, assembly language, i haven't touched that since the 6800c on the old Ataris :)