Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!ucsd!sdcc6!loral!dml
From: dml@loral.UUCP (Dave Lewis)
Newsgroups: sci.electronics
Subject: Re: build-it-yourself EPROM erasers (Just the facts)
Message-ID: <1552@loral.UUCP>
Date: 23 Feb 88 19:59:16 GMT
References: <8802091255.AA23298@ucbvax.Berkeley.EDU> <12@ucsd.EDU> <3244@arthur.cs.purdue.edu> <1034@ssc.UUCP>
Reply-To: dml@loral.UUCP (Dave Lewis)
Followup-To: sci.electronics
Distribution: na
Organization: Loral Instrumentation, San Diego
Lines: 24

In article <1034@ssc.UUCP> markz@ssc.UUCP (Markz Zenier) writes:

>There are three types of flourescent lights that produce enough UV to zap
>EPROMS.

>The Black Light and Black Light Blue Phosphor peaks at 350 nanometers and
>will take 3 1/2 days (Back in my starving student days I was patient)
>These bulbs are typed FnnTn/BL or FnnTn/BLB.  

  I have heard that sunlight will also do the job...in a week or so. I never
tried it though...

>A germicidal lamp at a speciality lamp house will run $30 to $50.  A lot

  Nonsense! Any large lighting or electrical supply store will have them for
a LOT less than that. This was back in '79, but I got a G8T5 for $14 at an
industrial lighting supply dealer in Seattle. I don't know about current
prices, because I'm still using that one. If you absolutely can't find any
place to buy one, go to a barber shop (not one of these yuppie "haircut
salons" - a real barber shop, with a real barber pole) and ask where they
get the ones used to sterilize the clippers.

  G8T5 fits in a standard 14" fluourescent light fixture and will erase 20
EPROMS at 1" in 10 minutes or so. (as a bonus, I can stick an F8T5 in the
same fixture and expose PC boards)