Magnet Assemble
 |
 Nylon Vice Jaws Magnet Assemble Hose Fittings Tool AN Jaw Fiber Vise $15.00 Time Remaining: 7d 20m Buy It Now for only: $15.00 |
 Aluminium Vise Jaws Magnet Assemble Hose Fittings Tool Vice $22.00 Time Remaining: 3d 18h 33m Buy It Now for only: $22.00 |
 Aluminium Vice Jaw Magnet Assemble Hose Fittings Tool $22.00 Time Remaining: 15h 49m Buy It Now for only: $22.00 |
Magnet Assemble
Magnetic LED writing board
A magnetic LED writing board providing a thin, lightweight, durable writing board, which has an internal array of closely arranged magnet assemblies. The magnetic writing board is operated to contemporaneously create a display which may be transferred to a computer for the modification thereof. The image may then be redisplayed, printed, stored, and/or remotely displayed such as at a computer monitor. A portion or all of an image may be completely and immediately erased. The magnetic writing board includes a grid disposed behind a display surface and a plurality of display elements, one each disposed within each cell defined by the grid. Each grid cell receives a masking agent to obscure the contrasting color of at least the forward edge of the display element when the display element is in the back position. The magnet assemblies are each oriented with their magnetic poles in the same direction, with the positive and negative poles being oriented to face either the front or back of the magnetic writing board. A writing and erasing implement includes a pair of oppositely disposed magnets, one being disposed at each end. The writing end of the implement has a magnetic pole opposite to the forward facing pole of the magnet assemblies, causing the magnet assemblies directly in front of the writing end of the implement to be attracted toward the display surface.
1. A magnetic writing board apparatus comprising:
a non-magnetic grid matrix defining a plurality of grid cells;
a display screen positioned over said non-magnetic grid matrix;
a plurality of magnet assemblies, one each of said plurality of magnetic assemblies being slidably received within one each of said plurality of grid cells, each of said plurality of magnet assemblies being oriented in a common polarity, each of said plurality of magnet assemblies defining a display surface disposed to be visible through said display screen when said magnet assembly is moved to a forward position proximate said display screen;
a masking agent disposed within each of said grid cells for masking said display surface of each of said plurality of magnet assemblies, said masking agent defining a color contrasting a color defined by said display face of each of said plurality of magnet assemblies, said masking agent being displaced when one of said plurality of magnet assemblies is moved toward said display screen, thus effecting a color change visible through said display screen;
a writing implement emitting a magnetic field of a polarity opposite said common polarity of said plurality of magnet assemblies such that as said writing implement is passed over said display screen, proximate of said plurality of magnet assemblies are attracted toward said display screen and said display surface of each of said proximate magnet assemblies is made visible; and
an erasing implement emitting a magnetic field of a polarity common to said common polarity of said plurality of magnet assemblies such that as said erasing implement is passed over said display screen, proximate of said plurality of magnet assemblies are repelled away from said display screen and said display surface of each of said proximate magnet assemblies is made invisible.
2. The magnetic LED writing board of claim 1 wherein said writing implement and said erasing implement are unitary in construction to define a writing/erasing implement, said writing implement being disposed at a first end of said writing/erasing implement and said erasing implement being disposed at a second end of said writing/erasing implement.
3. The magnetic writing board of claim 1 wherein said erasing implement defines a plate-type configuration to accommodate quick erasure of large areas, said erasing implement including a sheet-type magnet disposed proximate an erasing surface defined by said erasing implement.
4. The magnetic writing board of claim 1 further comprising:
a plurality of electromagnets, one each being disposed behind each of said plurality of magnet assemblies; and
a controller for controlling a current applied to each of said plurality of electromagnets to transmit one of a positive magnetic pole and a negative magnetic pole to each of said plurality of magnet assemblies to repel selected of said plurality of magnet assemblies toward said display screen and to attract a remaining of said plurality of magnet assemblies away from said display screen to effectuate display of a stored image.
5. The magnetic LED writing board of claim 1 further comprising:
a plurality of magnet proximity sensors, one each being disposed behind each of said plurality of magnet assemblies, each of said plurality of magnet proximity sensors detecting a magnetic field strength associated with a corresponding of said plurality of magnet assemblies, said magnetic field strength being indicative of a position of said corresponding magnet assembly with respect to said display screen; and
a processor for processing said magnetic field strength detected for each of said plurality of magnet assemblies, a compilation of said magnetic field strength for each of said plurality of magnet assemblies being useful for transferring an image to a data storage and processing device for at least modification, re-displaying, printing, storing and remotely displaying said image displayed concurrently on said image display.
6. The magnetic writing board of claim 1 wherein said masking agent is a viscous liquid in which each of said plurality of magnet assemblies freely floats in a linear direction toward and away from said display screen within each said grid cell, reorientation of each of said plurality of magnet assemblies being prevented by each of said plurality of grid cells.
7. A magnetic writing board apparatus comprising:
a non-magnetic grid matrix defining a plurality of grid cells;
a display screen positioned over said non-magnetic grid matrix;
a plurality of magnet assemblies, one each of said plurality of magnetic assemblies being sidably received within one each of said plurality of grid cells, each of said plurality of magnet assemblies being oriented in a common polarity, each of said plurality of magnet assemblies defining a display surface disposed to be visible through said display screen when said magnet assembly is moved to a forward position proximate said display screen;
a masking agent disposed within each of said grid cells for masking said display surface of each of said plurality of magnet assemblies, said masking agent defining a color contrasting a color defined by said display face of each of said plurality of magnet assemblies, said masking agent being displaced when one of said plurality of magnet assemblies is moved toward said display screen, thus effecting a color change visible through said display screen, said masking agent being a viscous liquid in which each of said plurality of magnet assemblies freely floats in a linear direction toward and away from said display screen within each said grid cell, reorientation of each of said plurality of magnet assemblies being prevented by each of said plurality of grid cells; and
a writing and erasing implement defining a first end and a second end, a writing implement being disposed at said first end and emitting a magnetic field of a polarity opposite said common polarity of said plurality of magnet assemblies such that as said writing implement is passed over said display screen, proximate of said plurality of magnet assemblies are attracted toward said display screen and said display surface of each of said proximate magnet assemblies is made visible, and an erasing implement being disposed at said second end and emitting a magnetic field of a polarity common to said common polarity of said plurality of magnet assemblies such that as said erasing implement is passed over said display screen, proximate of said plurality of magnet assemblies are repelled away from said display screen and said display surface of each of said proximate magnet assemblies is made invisible.
8. The magnetic LED writing board of claim 7 further comprising a second erasing implement defining a plate-type configuration to accommodate quick erasure of large areas, said erasing implement including a sheet-type magnet disposed proximate an erasing surface defined by said erasing implement.
9. The magnetic writing board of claim 7 further comprising:
a plurality of electromagnets, one each being disposed behind each of said plurality of magnet assemblies; and
a controller for controlling a current applied to each of said plurality of electromagnets to transmit one of a positive magnetic pole and a negative magnetic pole to each of said plurality of magnet assemblies to repel selected of said plurality of magnet assemblies toward said display screen and to attract a remaining of said plurality of magnet assemblies away from said display screen to effectuate display of a stored image.
10. The magnetic LED writing board of claim 7 further comprising:
a plurality of magnet proximity sensors, one each being disposed behind each of said plurality of magnet assemblies, each of said plurality of magnet proximity sensors detecting a magnetic field strength associated with a corresponding of said plurality of magnet assemblies, said magnetic field strength being indicative of a position of said corresponding magnet assembly with respect to said display screen; and
a processor for processing said magnetic field strength detected for each of said plurality of magnet assemblies, a compilation of said magnetic field strength for each of said plurality of magnet assemblies being useful for transferring an image to a data storage and processing device for at least modification, re-displaying, printing, storing and remotely displaying said image displayed concurrently on said image display.
About the Author
A magnetic LED writing board providing a thin, lightweight, durable writing board, which has an internal array of closely arranged magnet assemblies. The magnetic writing board is operated to contemporaneously create a display which may be transferred to a computer for the modification thereof. The image may then be redisplayed, printed, stored, and/or remotely displayed such as at a computer monitor
Will running a homemade wind turbine without a load hurt it?
I'm in the process of building my first wind turbine and was curious if running it without a load (ie. battery bank) would be harmful to the generators? I'm using a 260VDC 5A permanent magnet treadmill motor as the generator. I'm about ready to put up my tower and wasn't sure if I can go ahead and get it all assembled and put up and then add the battery bank as soon as I can get the batteries. This way I could also see how well it's going to perform on the tower. It's a 60' lattice tower and will be hinged at the bottom but still will be a bit of a pain to lower and raise a lot. I'm really excited about getting this up and running but don't want to damage anything before I even get started.
Also I've heard of people using old electric baseboard heaters as a load dump when the bank gets fully charged. I'm having some trouble locating any of these around here and was wondering if anyone would have any other suggestions on something I could use as a dump? Thanks for all your time.
You will wear the bearings a bit, but there
will be no damage to the generator from
turning without load.
How do you intend to prevent overspeed in
a high wind though?
As to the load bank, if its only 5A., the nichrome
wire units from an old toaster or two would do it.
(Leave em on the mica in free air.)
Easy assembly of an Halbach array