mystery 3-contact part?
z@z.z
is. It is out of a battery operated perpetual
motion toy, and is the sole component
outside of a 3-terminal coil in that (not
counting 9v battery). The toy is currently
not working. The coil appears to be actually
two coils in series, and seems to be OK
(current passes through OK).
The mystery device has markings:
LC
945P
M904
where the "M" looks like (ie appears to be)
a Motorola "bat-wing". It is encased in
a TO-92 style case. I called Motorola
but the person I spoke with was not able
to find it, although she did say from the center
line of the Id it appeared to have been
manufactured in 19x9, probably 1989.
The central lead is connected to +9v,
with the other leads connected to coil terminals.
The third coil terminal is grounded.
I tried substituting simplistically an NPN
transistor but it (so far) has not worked.
Thanks for any info,
-z
Ilpo Hamunen
Hi z, may I call you z :-) ?
'A battery operated perpetual motion...': I like that !
The 'European version of altavista', Evreka, found
4 links to LC945P:
http://www.dialelectronics.co.uk/l2.htm
http://support.tandy.com/support_audio/doc30/30190.htm
http://support.tandy.com/support_audio/doc42/42150.htm
http://support.tandy.com/support_audio/doc30/30165.htm
The Tandy (Radio Shack) links refer to 'XSTR' which I
believe is a Transistor. The number 945, especially
C945 refers to a Japanese/Far East 2SC945 NPN transistor
on the other hand. **This was just a wild quess.**
Pin-out for the 2SC945 is E-C-B from the text side view
with leads pointing down.
If you go to D.R. Components' site and do a serach using
LC945 as a key word you'd get Motorola as a Manufacturer
for the device (and also some exisisting stock where ever
the parts may be): http://www.drcomponents.com/stockcheck.html
Remark: These guys do not sell components as spare parts.
The Tandy pages say 'To order parts call 1-800-843-7422
or visit your local RadioShack store'. If I'd suggest you
to do the latter one I'm sure I'd start a Flame war :-)
You mentioned you are trying to find out what this
device is. I have no direct answer but try the Tandy
links. Perhaps RS can get you a replacement part.
--ilpo
John Woodgate
>The mystery device has markings:
>
> LC
> 945P
> M904
>
>where the "M" looks like (ie appears to be)
>a Motorola "bat-wing". It is encased in
>a TO-92 style case. I called Motorola
>but the person I spoke with was not able
>to find it, although she did say from the center
>line of the Id it appeared to have been
>manufactured in 19x9, probably 1989.
>
>The central lead is connected to +9v,
>with the other leads connected to coil terminals.
>The third coil terminal is grounded.
>
>I tried substituting simplistically an NPN
>transistor but it (so far) has not worked.
If the pin-out is B-E-C, it could be a PNP bipolar, but it might be a
JFET. It doesn't seem that there is such a thing as a '2SC945P' Japanese
transistor, which would be NPN, anyway. The connections you describe are
consistent with the thing being a blocking oscillator.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk
I wanted to make a fully-automated nuclear-powered trawler,
but it went into spontaneous fishing.
John Woodgate
>Hi z, may I call you z :-) ?
>
>'A battery operated perpetual motion...': I like that !
>
>The 'European version of altavista', Evreka, found
>4 links to LC945P:
>
>http://www.dialelectronics.co.uk/l2.htm
>http://support.tandy.com/support_audio/doc30/30190.htm
>http://support.tandy.com/support_audio/doc42/42150.htm
>http://support.tandy.com/support_audio/doc30/30165.htm
>
>The Tandy (Radio Shack) links refer to 'XSTR' which I
>believe is a Transistor. The number 945, especially
>C945 refers to a Japanese/Far East 2SC945 NPN transistor
>on the other hand. **This was just a wild quess.**
>Pin-out for the 2SC945 is E-C-B from the text side view
>with leads pointing down.
OK, if there really is a 2SC945 (it isn't in my cross-reference book),
then any high-beta small-signal NPN should work.
Henry Spencer
> LC
> 945P
> M904
An old NTE catalog cross-references 945 to the NTE 6400, which is a
unijunction transistor. (The 6400 is in a metal can, but the P suffix on
the original suggests plastic package, and the 6400 has a relative, the
6410, in a TO-92 package.)
--
Computer disaster in February? Oh, you | Henry Spencer he...@spsystems.net
must mean the release of Windows 2000. | (aka he...@zoo.toronto.edu)
Chris
wrote:
><38CF15...@dna.fi>, Ilpo Hamunen <il...@dna.fi> inimitably wrote:
>>Hi z, may I call you z :-) ?
>>
>>'A battery operated perpetual motion...': I like that !
>>
>>The 'European version of altavista', Evreka, found
>>4 links to LC945P:
>>
>>http://www.dialelectronics.co.uk/l2.htm
>>http://support.tandy.com/support_audio/doc30/30190.htm
>>http://support.tandy.com/support_audio/doc42/42150.htm
>>http://support.tandy.com/support_audio/doc30/30165.htm
>>
>>The Tandy (Radio Shack) links refer to 'XSTR' which I
>>believe is a Transistor. The number 945, especially
>>C945 refers to a Japanese/Far East 2SC945 NPN transistor
>>on the other hand. **This was just a wild quess.**
>>Pin-out for the 2SC945 is E-C-B from the text side view
>>with leads pointing down.
>
>OK, if there really is a 2SC945 (it isn't in my cross-reference book),
>then any high-beta small-signal NPN should work.
My equivalents book (International Transistor Equivalents Guide) shows
2SC945 as being made by Nippon Electric Comp. (NEC). The equivalent is
given as a BC167B.
Good luck
Chris
Da Man
compliment to a A733
Just a small signal, to92 general purpose transistor
Jeff
"John Woodgate" <j...@jmwa.demon.co.uk> wrote in message
news:so2ecGBB...@jmwa.demon.co.uk...
> <38CF15...@dna.fi>, Ilpo Hamunen <il...@dna.fi> inimitably wrote:
> >Hi z, may I call you z :-) ?
> >
> >'A battery operated perpetual motion...': I like that !
> >
> >The 'European version of altavista', Evreka, found
> >4 links to LC945P:
> >
> >http://www.dialelectronics.co.uk/l2.htm
> >http://support.tandy.com/support_audio/doc30/30190.htm
> >http://support.tandy.com/support_audio/doc42/42150.htm
> >http://support.tandy.com/support_audio/doc30/30165.htm
> >
> >The Tandy (Radio Shack) links refer to 'XSTR' which I
> >believe is a Transistor. The number 945, especially
> >C945 refers to a Japanese/Far East 2SC945 NPN transistor
> >on the other hand. **This was just a wild quess.**
> >Pin-out for the 2SC945 is E-C-B from the text side view
> >with leads pointing down.
>
> OK, if there really is a 2SC945 (it isn't in my cross-reference book),
> then any high-beta small-signal NPN should work.