From: Ethan Dicks (ethan.dicks_at_gmail.com)
Date: 2006-07-19 23:51:59
On 7/19/06, William Levak <wlevak@sdf.lonestar.org> wrote:
> My old Rockwell data book says that EPROM's can be erased by exposing to
> UV light for 20 minutes. It does not say whether to use long or short
> wavelength UV.
It would have to be short wavelength UV. Long wavelength UV _can_
erase EPROMs, but it takes substantially over 20 minutes.
> UV lights are available at novelty and science supply
> outlets, it does not have to be a dedicated EPROM eraser.
Germicidal UV bulbs - sometimes used for pool-side or RV water
treatment systems are the right wavelength, FWIW.
> If you use one of these other UV lights, be sure to shield your eyes from
> direct exposure to the UV light. Overexposure to UV light has been
> implicated in glaucoma.
Indeed. You want a sealed unit that won't leak light when you fire up the bulb.
-ethan
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