home *** CD-ROM | disk | FTP | other *** search
- Date: Wednesday, 6 June 1984
- From: hplabs!hao!seismo!cmcl2!floyd!clyde!burl!ulysses!gamma!mb2c!uofm-cv!tom
- To: All
- Re: Prom Erasure
-
- There are two different kinds of ultraviolet tubes available--short
- wave and long wave. The kind used to illuminate posters, etc. are
- long wave. The kind used to erase EPROMS are short wave. Short wave
- UV is the component of sunlight which causes tanning (and sunburn, and
- skin cancer), so you have to be very careful not to look at a short
- wave UV lamp. I've been using a General Electric G8T5 8-watt
- germicidal tube with very good results. If you want to build an
- eraser from scratch then you'll also need an 8-watt ballast and an
- FS-5 starter. There are some back issues of BYTE magazine which
- describe the construction of an EPROM eraser. However, at least one
- of these articles INCORRECTLY suggests using a long-wave UV lamp. The
- easiest way (and probably cheapest way) to build an EPROM eraser is to
- buy the G8T5 tube and put it in an inexpensive fluorescent desk lamp
- which already contains the correct ballast, starter, sockets, cord and
- power switch.
-
- Good luck and have fun. Let me know if you need more information.
-
- Tom Libert
- Dept. of EECS
- Division of Computer Sci. and Engin.
- Univ. of Michigan
- Ann Arbor, MI 48109
- (313) 763-6474
-