The boy electrician was a LONG time ago but, as I recall, cathode & emitter
are the negative leads.
--Allen
Michael Pakay wrote:
> Hello All,
>
> I'm building a new computer for our Pinewood Derby Track. The
> directions show +positive and -Negative for the LED's. The High-Output
> Infrared LED's show Cathode. The Infrared Phototransistors show
> Collector and Emitter.
>
> Is the Cathode the + or - side?
> Is the Collector the + or - side?
>
> Help if you know the answer
>
> Michael Pakay
> Sr Commander Outpost 2
> Northwest Section NJ District
>
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