5 Jul
2005
5 Jul
'05
10:51 p.m.
I have a small handful of these parts with a Motorola 'M' on them.
They are 3-legged, seeming to be a transistor or similar device (I
don't think they are voltage regulators). The case is plastic,
smaller than a 78M05 (T220?), especially since the metal thermal
transfer patch is integral to the body (not sticking up above the
epoxy like on a 78M05).
The markings are...
R927
S
AC823
I can't seem to find anything reasonable by googling Motorola and
either R927 or AC823. Does this sound familiar to anyone here?
Thanks,
-ethan
6 Jul
6 Jul
6:23 p.m.
On Wed, 6 Jul 2005 00:51:07 -0500
Ethan Dicks <ethan.dicks at gmail.com> wrote:
I have a small handful of these parts with a Motorola
'M' on them.
They are 3-legged, seeming to be a transistor or similar device (I
don't think they are voltage regulators). The case is plastic,
smaller than a 78M05 (T220?), especially since the metal thermal
transfer patch is integral to the body (not sticking up above the
epoxy like on a 78M05).
The markings are...
R927
S
AC823
I can't seem to find anything reasonable by googling Motorola and
either R927 or AC823. Does this sound familiar to anyone here?
To figure out if they're simple transistors, use the diode function on a
VOM to find the 'diode' junctions between pins. If they're simple
transistors, you can then use the crude 'transistor tester' function on
many VOMs to figure out Emitter, Base, Collector (by hooking it up until
you get a reasonable 'Beta' reading on the VOM).
If you have enough of them, you can make wire up a bunch of flip flops
and make your own discrete digital computer. (this last paragraph
included to bring this comment back on-topic).
7061
days inactive
7062
days old
1 comments
2 participants
participants (2)
-
chenmel＠earthlink.net -
ethan.dicks＠gmail.com