2N3055

Going through my stash to sort what stays and what goes... I have two
2N3055s, they are heavier than other TO-3 transistors, mostly because
the base plate is twice as thick (~2mm). They are marked as PMC.
Anyone have any input? I'd say "real" based on the extra material and
heft. Oh, and I'm not able to test electrically anymore, downsizing my
lab, you see.
(going digital!)

 

[Baron]

a7yvm109gf5d1@netzero.com Inscribed thus:

Going through my stash to sort what stays and what goes... I have two
2N3055s, they are heavier than other TO-3 transistors, mostly because
the base plate is twice as thick (~2mm). They are marked as PMC.
Anyone have any input? I'd say "real" based on the extra material and
heft. Oh, and I'm not able to test electrically anymore, downsizing my
lab, you see.
(going digital!)

Probably due to the all copper case !

--
Best Regards:
Baron.

 

[Morten Leikvoll]

<a7yvm109gf5d1@netzero.com> wrote in message
news:110d68d0-8f56-48ed-ac8c-4acd60750256@e35g2000yqc.googlegroups.com...

Going through my stash to sort what stays and what goes... I have two
2N3055s, they are heavier than other TO-3 transistors, mostly because
the base plate is twice as thick (~2mm). They are marked as PMC.
Anyone have any input? I'd say "real" based on the extra material and
heft. Oh, and I'm not able to test electrically anymore, downsizing my
lab, you see.
(going digital!)

Nobody uses those dinosaurs anymore. We have proper FET technology.
Unless you collect spareparts for antique electronics, bin them..

 

[Baron]

Morten Leikvoll Inscribed thus:

a7yvm109gf5d1@netzero.com> wrote in message

news:110d68d0-8f56-48ed-ac8c-4acd60750256@e35g2000yqc.googlegroups.com...
Going through my stash to sort what stays and what goes... I have two
2N3055s, they are heavier than other TO-3 transistors, mostly because
the base plate is twice as thick (~2mm). They are marked as PMC.
Anyone have any input? I'd say "real" based on the extra material and
heft. Oh, and I'm not able to test electrically anymore, downsizing
my lab, you see.
(going digital!)

Nobody uses those dinosaurs anymore. We have proper FET technology.
Unless you collect spareparts for antique electronics, bin them..

Dinosaurs or not, I wouldn't knock the value of the copper scrap in
them !

--
Best Regards:
Baron.

 

[John Robertson]

Morten Leikvoll wrote:

a7yvm109gf5d1@netzero.com> wrote in message
news:110d68d0-8f56-48ed-ac8c-4acd60750256@e35g2000yqc.googlegroups.com...
Going through my stash to sort what stays and what goes... I have two
2N3055s, they are heavier than other TO-3 transistors, mostly because
the base plate is twice as thick (~2mm). They are marked as PMC.
Anyone have any input? I'd say "real" based on the extra material and
heft. Oh, and I'm not able to test electrically anymore, downsizing my
lab, you see.
(going digital!)

Nobody uses those dinosaurs anymore. We have proper FET technology.
Unless you collect spareparts for antique electronics, bin them..

Ah, but some of us do use these 'dinosaurs' to repair vintage equipment.

John :-#)#

--
(Please post followups or tech enquiries to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

 

[Michael Black]

On Sun, 26 Jun 2011, a7yvm109gf5d1@netzero.com wrote:

Going through my stash to sort what stays and what goes... I have two
2N3055s, they are heavier than other TO-3 transistors, mostly because
the base plate is twice as thick (~2mm). They are marked as PMC.
Anyone have any input? I'd say "real" based on the extra material and
heft. Oh, and I'm not able to test electrically anymore, downsizing my
lab, you see.
(going digital!)

So what's the question? You've made statements, haven't said what you

want to know.

Two transistors are pretty minor, especially if you've tossed even
rudimentary test equipment. So either keep the transistors because there
are only two of them, or toss them because you clearly won't be using
them, not when you no longer have test equipment.

Michael

 

[Ian Field]

"Morten Leikvoll" <mleikvol@yahoo.nospam> wrote in message
news:t4SdnVa7IaWbspXTnZ2dnUVZ7tKdnZ2d@lyse.net...

a7yvm109gf5d1@netzero.com> wrote in message
news:110d68d0-8f56-48ed-ac8c-4acd60750256@e35g2000yqc.googlegroups.com...
Going through my stash to sort what stays and what goes... I have two
2N3055s, they are heavier than other TO-3 transistors, mostly because
the base plate is twice as thick (~2mm). They are marked as PMC.
Anyone have any input? I'd say "real" based on the extra material and
heft. Oh, and I'm not able to test electrically anymore, downsizing my
lab, you see.
(going digital!)

Nobody uses those dinosaurs anymore. We have proper FET technology.
Unless you collect spareparts for antique electronics, bin them..

Somewhere I vaguely remember seeing a design for a sort of hot plate based
on a 3055 for keeping a mug of coffee hot.

 

[John Robertson]

Ian Field wrote:

"Morten Leikvoll" <mleikvol@yahoo.nospam> wrote in message
news:t4SdnVa7IaWbspXTnZ2dnUVZ7tKdnZ2d@lyse.net...
a7yvm109gf5d1@netzero.com> wrote in message
news:110d68d0-8f56-48ed-ac8c-4acd60750256@e35g2000yqc.googlegroups.com...
Going through my stash to sort what stays and what goes... I have two
2N3055s, they are heavier than other TO-3 transistors, mostly because
the base plate is twice as thick (~2mm). They are marked as PMC.
Anyone have any input? I'd say "real" based on the extra material and
heft. Oh, and I'm not able to test electrically anymore, downsizing my
lab, you see.
(going digital!)
Nobody uses those dinosaurs anymore. We have proper FET technology.
Unless you collect spareparts for antique electronics, bin them..


Somewhere I vaguely remember seeing a design for a sort of hot plate based
on a 3055 for keeping a mug of coffee hot.

The 2N3055 5VDC pass-regulator (heatsink assembly), as used in the 1980
video game Galaga, would keep your tea or coffee warm if not hot...

John :-#)#

--
(Please post followups or tech enquiries to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

 

[Ian Field]

"John Robertson" <spam@flippers.com> wrote in message
news:usednQAHSoSZc4jTnZ2dnUVZ_v2dnZ2d@giganews.com...

Ian Field wrote:
"Morten Leikvoll" <mleikvol@yahoo.nospam> wrote in message
news:t4SdnVa7IaWbspXTnZ2dnUVZ7tKdnZ2d@lyse.net...
a7yvm109gf5d1@netzero.com> wrote in message
news:110d68d0-8f56-48ed-ac8c-4acd60750256@e35g2000yqc.googlegroups.com...
Going through my stash to sort what stays and what goes... I have two
2N3055s, they are heavier than other TO-3 transistors, mostly because
the base plate is twice as thick (~2mm). They are marked as PMC.
Anyone have any input? I'd say "real" based on the extra material and
heft. Oh, and I'm not able to test electrically anymore, downsizing my
lab, you see.
(going digital!)
Nobody uses those dinosaurs anymore. We have proper FET technology.
Unless you collect spareparts for antique electronics, bin them..


Somewhere I vaguely remember seeing a design for a sort of hot plate
based on a 3055 for keeping a mug of coffee hot.

The 2N3055 5VDC pass-regulator (heatsink assembly), as used in the 1980
video game Galaga, would keep your tea or coffee warm if not hot...

The one I'm thinking of was published specifically as a mug heater.

Probably something along the lines of a temperature controlled current
source into a short circuit.

Probably the best thing to do with a 3055 these days.