28 Jun
2005
28 Jun
'05
7:40 p.m.
On Tue, 28 Jun 2005 08:18:09 +0100
Philip Pemberton <philpem at dsl.pipex.com> wrote:
In message <42C0F150.9040303 at gjcp.net>
Gordon JC Pearce <gordon at gjcp.net> wrote:
I have a germicidal cabinet for erasing EPROMs. In it's original life,
it was a goggle cabinet for a high school metal shop. Big racks in it
for a whole classroom full of goggles, and lined inside with mirrors.
And an interlock, of course.
I never really need to erase the quantity of EPROMs it is capable of.
On that note, are UV LEDs powerful enough to
erase EPROMs? I'm
thinking about building an eraser, and want to try an alternative to
the rather expensive and fragile UV tube.
I doubt it. IIRC the wavelength is wrong - you need 253.7nm
("germicidal ultraviolet") to erase EPROMs. You might be able to get a
UV LED to do it, but it'll take a long while to erase.
Magenta sell an EPROM eraser kit - that might be worth a try. At last
check it was about ?30.