1 Feb
1999
1 Feb
'99
12:06 p.m.
Tony Duell wrote:
A photomultiplier isn't that bad to use. OK, it
needs a kilovolt or so of
EHT. But apart from that it's a fairly easy device to connect up and get
a useable signal from. There should be a lot of them still about, and
small ones aren't that expensive second-hand.
The tricky part is how to mate this with the mechanical assembly. Even
the laserdisc players that used a HeNe laser still used a semiconductor
photodetector that was directly mounted on the sled.
Dang, I should have bought one of those old LD players when there were
scads of them in the surplus stores, so I could study how they were
built.