On Wed, 4 Feb 2004 21:39:32 +1100, you wrote:

>I have noticed that the later PIC chips (16c745JW) erase a lot quicker =
(2
>minutes with a 20w UV fluro tube) than the older chips, is anyone using =
say
>a UV LED or small light source to erase these chips in place?

Won't work - LEDs have too long a wavelength - ISTR the wavelength needs =
to be around 257nm - UV
LEDs art typically 400-ish, with specials available down to around 350

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