I am starting to knock together a crude Led Nipkow which will be powered modulated by Induction more just want to see if it will work ,i mentioned it a while back here .
viewtopic.php?f=8&t=2075&p=18281&hilit=wireless+led#p18281Now i know the problem of a normal Led is its lens but i happen to have just the right amount for a quick knock up 32 line lens less Led disk which might be good enough for the job .....well i am going to try this time only for a proof of concept ,i had a spare bead disk nipkow which i can see has a few mistakes but good enough here for testing .
Being lazy all the leds will be lighting up .
2 ways of doing this ,a coil for each led and you have an induction mask each led .... part of one above or below it would partly light also i think .....like the light spill over from a light box ...
i am going for one receiving coil rotating in the center other coil the transmitting one lined up ...the result i would think is a number of rasters around the disk .....could have a another black disk infront with a mask slot cut out blank out the others if you could be bothered /
There's a cap needed to tune in the circuit on the receiving coil the leds all just light on 1 volt so should be workable double that /
I will just use a 555 oscillator running at 20 to 40 khz and NBTV modulate via its pin 5 ... pin 3 to a power transistor to the transmitting coil ...motor speed will just be a lm317 manual control .
The size of the LED point is smaller than what my camera can focus to its smaller than whats showing up Still i am more interested in if i can modulate them than the idea of this as a whole working monitor .
Just a little experiment its not as elegant as a bead or lens disk and i am sure some one has used the idea for a pov display more than likely .
Any one tried it for NBTV just know i haven't yet .
The electromagnetic spectrum has no theoretical limit at either end. If all the mass/energy in the Universe is considered a 'limit', then that would be the only real theoretical limit to the maximum frequency attainable.