20 Dec
2011
20 Dec
'11
3:16 a.m.
CdS cells have
quite a few problems that have made them obsolete for
I don;t disagree that there are other devices that have advantages in
many applciaitons, and it's entirely reasonable to then use said
other
devices. But thee CdS photoresisto also has an advantage -- it's a
resistor. At a constnat ligjht level, the I-V characteristic is
pretty
darn lienar. That makes it ideal for the sort of amplitude-control
application that we've been discussisng