Recent content by ruudlustig

Hi Berkeman, Normally, a programmed EPROM will show a steady and constant bitcount (it should be of course). I use my EPROM eraser with a 4W uv lamp. Normally an EPROM is erased in about 10 minutes. When I expose long enough, the EPROM erases completely. Currently, I have erased about 40k bits...

Using an EPROM as a UV detector. I was planning to make a UV meter using an EPROM. The idea was that ultraviolet light erases an EPROM. When a fully programmed EPROM (all zero's) is exposed to uv light I should clearly see the number of bits (one's) increasing. So I have built a small...