MOTM

As a practical matter, the electrical symbol for the NPN transistor 
will show the emitter arrow pointing AWAY from the junction, while 
the PNP will show the arrow pointing TO the junction. This coincides 
with the direction of conventional (NOT electron) current flow.

Moe

--- In motm@egroups.com, "Paul Schreiber" <synth1@a...> wrote:
> NPN = Negative-Positive-Negative
> PNP = Positive-Negative-Positive
> 
> Transistors are 3 layers of silicon with added ions (called 'doping
> impurities').
> 
> Paul S.
> 
> ----- Original Message -----
> From: <perpetual@u...>
> To: <motm@egroups.com>
> Sent: Thursday, December 07, 2000 2:24 PM
> Subject: [motm] NPN/PNP?
> 
> 
> > sorry, i know this has probably been covered but an archives 
search
> > didn't turn up any messages.
> >
> > what is referred to by NPN/PNP?
> >
> > thanks,
> > alex
> >
> >
> >
> >
> >