Quote:
|
You'll still eventually need an eraser of course: I wonder if you can now get UV LEDs which produce light of a suitable wavelength? My understanding is that some LEDs used in LED lighting actually natively emit UV, and they are coated in phosphor which converts the UV light into light of the required visible wavelength. Is anyone already working on a LED eprom eraser?
|
Without wishing to get too far off topic: probably not yet. EPROMs need UV light of a wavelength shorter than 400nm (the 257nm line from mercury vapour discharge does the job) and they need quite a lot of it. LEDs at those sort of wavelengths are still pretty inefficient and expensive.
White LEDs typically use a Gallium Nitride visible blue LED, around 460nm wavelength, with a phosphor coating to create white or other colours like pink. There's no UV involved.
Chris