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Old 30th October 2007, 06:32 PM   #1
zilog is offline zilog  Sweden
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Join Date: Oct 2005
Default cheap EPROM eraser

I am in need of erasing and reprogramming a few 27C256, and my EPROM UV-erasing equipment is 210 kilometers away, so I wonder if it will work with a simple 4W counterfeit bill detector. If so, then I dont need to drive that far to get one for small money.
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Old 30th October 2007, 07:20 PM   #2
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Join Date: Nov 2002
Location: Netherlands

No that will not work. For erasing you'll need short wavelength UV (UV-C) with substantial power. The bill detectors emit long wavelength UV (UV-B to UV-A) at low power.

So maybe you can use snail-mail to get the e-proms to the eraser or get the eraser at your place.

Other options: Put the e-proms in direct sunlight or use a mercury sunlamp.

And in the very end you can try to get some eeprom replacements.

Good luck
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Old 31st October 2007, 09:29 PM   #3
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Join Date: Nov 2002
If you have 120 volt service I have a spare eraser.
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Old 31st October 2007, 09:38 PM   #4
zilog is offline zilog  Sweden
diyAudio Member
Join Date: Oct 2005
Originally posted by burnedfingers
If you have 120 volt service I have a spare eraser.

Thanks, but I have already ordered a brand new eraser. We have twice that voltage here
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