At 04:41 PM 12/13/96 +1100, you wrote:
>At 12:37 PM 11/12/96 MST, you wrote:
>>     What's your favorite opto-transistor?  I need to be able to "see"
>>     sunlight with an opto-transistor (no accuracy required, using an
>>     infrared transistor seems fine).
>>
>>     Dark current doesn't matter, "high noon" current of less than 1 mA is
>>     okay.
>
>A part which is cheap and easily available at your corner electronics shop
>would be the 2N2222. It's one of those tiny plastic packages(I don't know
>the case no.) but with a transparent top.
>
>Regards
>
>Prashant

Prashant,

I always thought the 2N2222 was an NPN transistor. I know they are not
commonly used in Australia. I wonder if you meant MEL-12 by any chance.
This is a super alpha pair photo transistor. Doesn't have very good IR
characteristics I believe.

Jim