stupid question

[Mike Martone]

a 7805 reads from left to right vss, gnd, and output. The type of transistor
case design will determine the pinout, however, if you have a T0-39 package,
there is usually a tab that denotes the collector pin. If it's a triangular
pattern, the base is always the center pin as you will see an offset in
relative position. If it's TO-3, the case will conduct to the collector pin
(if it's PNP)which is why you need an isolation kit. The best thing to do is
look up the national semiconductor web site and perform a part search by
number, you'll find all the specs and complete data sheets there.

good luck

----- Original Message -----
From: <don.broadus at exeloncorp.com>
To: <gmecm at diy-efi.org>
Sent: Monday, June 18, 2001 9:10 AM
Subject: RE: stupid question


> If you can get a hold of  a  SK  or  ECG  or NTE cross reference  manuals
at
> a TV parts place or Electronic parts place
> they will have everything you need. Sometimes they are free, but even if
you
> have to pay for them they are less than $ 10.00
>
>
> > -----Original Message-----
> > From: Mathieu Blais [SMTP:fireb76 at videotron.ca]
> > Sent: Wednesday, June 13, 2001 10:00 PM
> > To: gmecm at diy-efi.org
> > Subject: stupid question
> >
> > Hi,
> >     I need to hook up some transistors, and 7805 regulator, and don't
> > have a clue on how I could identify the pins.  I tried to look on
> > different websites
> > but haven't been able to get precise info.  Can anyone help me out,
would
> > be really appreciated.
> >
> >     Thanks.
> >     Math Blais
>
>
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