mystery part--
yeah I have been trying to think of were I got it from. I think maybe a toy robot or something,, if not maybe a camcorder? It has literally been sitting here for at least 2 years collecting dust. I pick it up every now and then just to have a look. I've always thought it was just part of a button.
Maybe the 'sink' is there to help mount as well as 'regulate' temperatures from surrounding components from affecting its function if it is indeed a resistive element? When I took the measurements this morning I tested once under daylight (0v) and then again covered with my thumb (0.02V). The resistance changes as well from about 1k to about 1.2k covered.
A while back when I was doing some research about photo-cells and other light sensors I came upon an article that talked about other kinds of materials used to fab photo-resistors, so I know that they do not all appear like the cheap and common ones we usually encounter, but the article did not link to any other types or show an example so I have no idea what to look for.
What else could it be tho? I'm going to test against a typical cds cell tomorrow and see how they compare in voltage variations and also resistance, that should prettymuch firm things up some more. Perhaps this type is more sensitve, or faster.
No, its not from the FBI or CIA,, I already found their plants' ;I >>jd
>>ps no part #'s