REQ: Heathkit Transistor ID

  • Thread starter Alan 'A.J.' Franzman
  • Start date
A

Alan 'A.J.' Franzman

Guest
Hello,

I have a Heathkit clock model GC-1005 which is having display problems that I
think may be due to bad transistors. I've been able to identify 2 of the 3
transistor types used but am stumped on the 3rd. I don't have a manual yet
(one is ordered) but I would like to get this part identified a.s.a.p.

The transistors in question are probably PNP, appear to be anode HV drivers
for the multiplexed neon readouts. They're marked: "417295" (this
probably=Heathkit P/N "417-295") then below that "M224". The "M" looks like
the Motorola logo. I have searched the internet and found nothing useful
under any of those numbers or {Motorola and 224}.

TIA

--
--------------------

Alan "A.J." Franzman

Email: a.j.franzman at verizon dot net

--------------------
 
Hi,

Try this -


http://www.d8apro.com/heath3.htm


Cheers - Joe
 
In article <Q5onb.19379$Ui3.2324@nwrddc02.gnilink.net>,
a.j.franzman@null.com.invalid mentioned...
Hello,

I have a Heathkit clock model GC-1005 which is having display problems that I
think may be due to bad transistors. I've been able to identify 2 of the 3
transistor types used but am stumped on the 3rd. I don't have a manual yet
(one is ordered) but I would like to get this part identified a.s.a.p.

The transistors in question are probably PNP, appear to be anode HV drivers
for the multiplexed neon readouts. They're marked: "417295" (this
probably=Heathkit P/N "417-295") then below that "M224". The "M" looks like
the Motorola logo. I have searched the internet and found nothing useful
under any of those numbers or {Motorola and 224}.

TIA
Click to expand...

Here's what the Heath Xref says:

Heath Generic Alter- Alter- Description
P/N P/N nate 1 nate 2

417-295 MPSL51 2N5400 2N5401 PNP 100V 600mA TO-92


Another alternate might be the MPS-A92.
BTW, I thought the 2N5400, 5401 were NPNs(?)

--
@@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@h@e@r@e@@
###Got a Question about ELECTRONICS? Check HERE First:###
http://users.pandora.be/educypedia/electronics/databank.htm
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html
@@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@u@e@n@t@@
 
"Watson A.Name - Watt Sun, Dark Remover" wrote:
In article <Q5onb.19379$Ui3.2324@nwrddc02.gnilink.net>,
a.j.franzman@null.com.invalid mentioned...
Hello,

I have a Heathkit clock model GC-1005 which is having display problems that I
think may be due to bad transistors. I've been able to identify 2 of the 3
transistor types used but am stumped on the 3rd. I don't have a manual yet
(one is ordered) but I would like to get this part identified a.s.a.p.

The transistors in question are probably PNP, appear to be anode HV drivers
for the multiplexed neon readouts. They're marked: "417295" (this
probably=Heathkit P/N "417-295") then below that "M224". The "M" looks like
the Motorola logo. I have searched the internet and found nothing useful
under any of those numbers or {Motorola and 224}.

TIA

Here's what the Heath Xref says:

Heath Generic Alter- Alter- Description
P/N P/N nate 1 nate 2

417-295 MPSL51 2N5400 2N5401 PNP 100V 600mA TO-92

Another alternate might be the MPS-A92.
BTW, I thought the 2N5400, 5401 were NPNs(?)
Click to expand...

Nope! According to Motorola, they are high voltage PNP silicon amplifier
transistors:

2N5400 Vceo 120 Volts Vcb 130 Volts Veb 5.0 Volts Ic 600 mAdc Pd 310 mW
2N5401 Vceo 150 Volts Vcb 160 Volts Veb 5.0 Volts Ic 600 mAdc Pd 310 mW
--


Michael A. Terrell
Central Florida
 
In article <3F9FEB5D.BBF271F6@earthlink.net>,
mike.terrell@earthlink.net mentioned...
"Watson A.Name - Watt Sun, Dark Remover" wrote:

In article <Q5onb.19379$Ui3.2324@nwrddc02.gnilink.net>,
a.j.franzman@null.com.invalid mentioned...
Hello,

I have a Heathkit clock model GC-1005 which is having display problems that I
think may be due to bad transistors. I've been able to identify 2 of the 3
transistor types used but am stumped on the 3rd. I don't have a manual yet
(one is ordered) but I would like to get this part identified a.s.a.p.

The transistors in question are probably PNP, appear to be anode HV drivers
for the multiplexed neon readouts. They're marked: "417295" (this
probably=Heathkit P/N "417-295") then below that "M224". The "M" looks like
the Motorola logo. I have searched the internet and found nothing useful
under any of those numbers or {Motorola and 224}.

TIA

Here's what the Heath Xref says:

Heath Generic Alter- Alter- Description
P/N P/N nate 1 nate 2

417-295 MPSL51 2N5400 2N5401 PNP 100V 600mA TO-92

Another alternate might be the MPS-A92.
BTW, I thought the 2N5400, 5401 were NPNs(?)


Nope! According to Motorola, they are high voltage PNP silicon amplifier
transistors:

2N5400 Vceo 120 Volts Vcb 130 Volts Veb 5.0 Volts Ic 600 mAdc Pd 310 mW
2N5401 Vceo 150 Volts Vcb 160 Volts Veb 5.0 Volts Ic 600 mAdc Pd 310 mW
Click to expand...
Hokay, my boo-boo. ;-)

--
@@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@h@e@r@e@@
###Got a Question about ELECTRONICS? Check HERE First:###
http://users.pandora.be/educypedia/electronics/databank.htm
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html
@@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@u@e@n@t@@
 
"Watson A.Name - Watt Sun, Dark Remover" <alondra101@hotmail.com> wrote in
message
<news:MPG.1a0a2c83ccc5d15098986a@news.dslextreme.com>:
In article <3F9FEB5D.BBF271F6@earthlink.net>,
mike.terrell@earthlink.net mentioned...
"Watson A.Name - Watt Sun, Dark Remover" wrote:

In article <Q5onb.19379$Ui3.2324@nwrddc02.gnilink.net>,
a.j.franzman@null.com.invalid mentioned...
Hello,

I have a Heathkit clock model GC-1005 which is having display problems
that I think may be due to bad transistors. I've been able to identify
2 of the 3 transistor types used but am stumped on the 3rd. I don't
have a manual yet (one is ordered) but I would like to get this part
identified a.s.a.p.

The transistors in question are probably PNP, appear to be anode HV
drivers for the multiplexed neon readouts. They're marked: "417295"
(this probably=Heathkit P/N "417-295") then below that "M224". The "M"
looks like the Motorola logo. I have searched the internet and found
nothing useful under any of those numbers or {Motorola and 224}.

TIA

Here's what the Heath Xref says:

Heath Generic Alter- Alter- Description
P/N P/N nate 1 nate 2

417-295 MPSL51 2N5400 2N5401 PNP 100V 600mA TO-92

Another alternate might be the MPS-A92.
BTW, I thought the 2N5400, 5401 were NPNs(?)


Nope! According to Motorola, they are high voltage PNP silicon amplifier
transistors:

2N5400 Vceo 120 Volts Vcb 130 Volts Veb 5.0 Volts Ic 600 mAdc Pd 310 mW
2N5401 Vceo 150 Volts Vcb 160 Volts Veb 5.0 Volts Ic 600 mAdc Pd 310 mW

Hokay, my boo-boo. ;-)
Click to expand...
No problem!

Thanks to all who helped!

--
--------------------

Alan "A.J." Franzman

Email: a.j.franzman at verizon dot net

--------------------
 
"Watson A.Name - Watt Sun, Dark Remover" wrote:
Hokay, my boo-boo. ;-)
Click to expand...
I can't remember them all, either, so I keep the old Motorola Databook
by my computer desk. I am slowly building an on line quick reference for
older 2N transistors. The first couple pages are up, but there are
hundreds more to go.

http://home.earthlink.net/~mike.terrell/2N-Index.html is the entry
point. As I have time I will enter more data. I started with the oldest
numbers, because there is little or no information on line for these
parts.
--


Michael A. Terrell
Central Florida
 
Michael A. Terrell wrote:

"Watson A.Name - Watt Sun, Dark Remover" wrote:

Hokay, my boo-boo. ;-)


I can't remember them all, either, so I keep the old Motorola Databook
by my computer desk. I am slowly building an on line quick reference for
older 2N transistors. The first couple pages are up, but there are
hundreds more to go.

http://home.earthlink.net/~mike.terrell/2N-Index.html is the entry
point. As I have time I will enter more data. I started with the oldest
numbers, because there is little or no information on line for these
parts.
Click to expand...
Cool. But which Moto databook are you using? If it's the same as mine,
like 1969, then I could help, if I only knew how to input the data and
format it.

--
@@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@h@e@r@e@@
###Got a Question about ELECTRONICS? Check HERE First:###
http://users.pandora.be/educypedia/electronics/databank.htm
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html
I speak only for myself, no one else, & they're my opinions
@@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@u@e@n@t@@
 
"Watson A.Name \"Watt Sun - the Dark Remover\"" wrote:
Michael A. Terrell wrote:

"Watson A.Name - Watt Sun, Dark Remover" wrote:

Hokay, my boo-boo. ;-)


I can't remember them all, either, so I keep the old Motorola Databook
by my computer desk. I am slowly building an on line quick reference for
older 2N transistors. The first couple pages are up, but there are
hundreds more to go.

http://home.earthlink.net/~mike.terrell/2N-Index.html is the entry
point. As I have time I will enter more data. I started with the oldest
numbers, because there is little or no information on line for these
parts.

Cool. But which Moto databook are you using? If it's the same as mine,
like 1969, then I could help, if I only knew how to input the data and
format it.
Click to expand...

Its simple HTML code. Save a page and look at it in Wordpad, or
another text editor. I just copy and paste a new line for each part.
that way the HTML code is a lot smaller than using A HTML editing
program. There is nothing fancy, other than the code for the headers. If
you want to try it, download the second page, and try entering some of
the missing part numbers and data, then email it to me as an attachment.
I'll check it, then post it to the site. If you, or anyone else want to
help, I'll list your names on the index page for the parts as a
contributor to the project. If you want to preview it as HTML on your
computer you need to download 2N.css and color.css to see the page the
same as it appears on the web site.

I would appreciate any help I can get. I am trying to get a used low
vision reading system. A friend of mine died recently, and his widow has
to make sure the VA doesn't want it back before I can have it. The print
in the Motorola books is so small it gives me headaches. I can only do a
half dozen parts at a time right now, so it takes a long time to add a
new page. After a page is complete, I create a PDF file, and change the
line from "2N Transistors", to "2Nxxx to 2Nxxx PDF" so that page can be
downloaded and printed in B&W

--


Michael A. Terrell
Central Florida
 
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