Xref: utzoo rec.ham-radio:4058 sci.electronics:2292
Path: utzoo!mnetor!uunet!iscuva!jimc
From: jimc@iscuva.ISCS.COM (Jim Cathey)
Newsgroups: rec.ham-radio,sci.electronics
Subject: Re: build-it-yourself EPROM erasers
Message-ID: <1185@iscuva.ISCS.COM>
Date: 22 Feb 88 18:54:15 GMT
References: <8802091255.AA23298@ucbvax.Berkeley.EDU> <12@ucsd.EDU> <3709@ihlpf.ATT.COM> <4878@ihlpg.ATT.COM>
Organization: ISC Systems Corporation, Spokane, WA
Lines: 25

In article <4878@ihlpg.ATT.COM> sfaber@ihlpg.ATT.COM (Faber) writes:
>I bought an old sunlamp at a garage sale that had a quartz tube with
>a drop of Hg and no electrodes.  It was excited by rf from a tube
>oscillator in the base of the lamp.  These work great as EPROM
>erasers.  Mine erases a row of EPROMS the length of the tube (~7")
>in about 10 minutes.  These lamps were made in Chicago and sold in
>the 1940s or 50s I think. 
>	The inner quartz tubes from broken mercury vapor street lights
>or newer sunlamps will also work (these contain electrodes) and may
>be excited with a fluorescent light ballast.  In general if you can 
>smell ozone from your lamp, you probably have a good source of short
>wavelength UV.

It's hard to beat a $10 germicidal lamp from your local electrical
supply house.  An old flourescent ballast and starter and you're in
business.  I built mine into an old wooden box.

+----------------+
! II      CCCCCC !  Jim Cathey
! II  SSSSCC     !  ISC Systems Corp.
! II      CC     !  TAF-C8;  Spokane, WA  99220
! IISSSS  CC     !  UUCP: uunet!iscuva!jimc
! II      CCCCCC !  (509) 927-5757
+----------------+
			"With excitement like this, who is needing enemas?"