[Boatanchors] unknown octal device

[Gerry Steffens]

The devices feel lighter or about the same as a tube.

The only cold DC resistance I find between the five pins is 35 ohms between
pins 2 & 6.

I will attempt to get my Cannon back from my son and post a pic.  However, I
am quite sure they are ballasts.

The appearance is similar to an old GE ? black metal tube that had three
diameters, each being smaller as one traverses from the base to the top (the
base-widest, the main part of the tube somewhat smaller in diameter and a
small portion at the top which is about a 1/4 inch less in diameter that the
main part).

The device is different having only two different diameters.  The first is
the base & main part of the device are all the same diameter, the diameter
of the octal base, and totally about 2 & 3/4 inches tall.  Then the "cap" is
about 1/4 inch less in diameter and about 1/4 inch in height.  The device is
about 3 inches tall, not counting the pins.

Thanks,
Gerry




  

-----Original Message-----
From: boatanchors-bounces at mailman.qth.net
[mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of J. Forster
Sent: Tuesday, January 17, 2012 1:34 PM
To: Gerry Steffens
Cc: 'Boatanchors-qth'
Subject: Re: [Boatanchors] unknown octal device

Triad made transformers. They sound similar to the UTC Ouncer line. Are they
significantly heavier than a tube would be? If so, they could well be a
Lint-to-Grid ot Plate-to-Line transformer.

-John

================


> While going through and cataloging my tube supply I came across three 
> identical devices I cannot identify.  I assume they are ballast tubes.
> Are
> they?
>
> They are black metal cylinders about 1.375 inches in diameter and 
> about 3 inches tall with effectively an octal tube base on one end 
> with 5 pins and a with a small narrowing of the cylinder to a lesser 
> diameter for the last quarter of an inch at the top or other end.  
> They are marked (actually stamped into the metal) TRIAD with 10A below 
> the name.  There is a 3/8 inch wide band of knurling around the 
> cylinder about 3/4 inch down from the top.
>
> I have executed quite a few Google searches in attempting to ID these 
> things.  Everything TRIAD comes up with fluorescent light ballasts.  
> Also checked out the Playthings of the Past website's Ballast Tube 
> listings - no 10A and no mention of TRIAD.
>
> Anyone have an idea what these critters are or who might need (or 
> want) them?  Since they don't appear to be gold, platinum or silver 
> they are probably available for postage, 'cause I really don't suspect 
> they are like that Picasso painting I had always hoped to find stashed 
> in a house I bought.  But, I really hate to toss out stuff that 
> someone might be looking for to do restorations.  I think I have had 
> them for 50 or more years.  I believe they arrived in some boxes of 
> stuff given away when the Jamestown, North Dakota Ham club went 
> inactive back in the early 1960s.  Besides, dragging them across a 
> number of states over the years, I suspect they are tired of hiding 
> and might appreciate a good home where they are needed or wanted.
>
> Cheers,
>
> Gerry
>
> Gerald Steffens P.E.
> Radio Historian, collecting & restoring E.H. Scott, McMurdo Silver, 
> Hallicrafters, National, Zenith Transoceanics & any other interesting 
> radios & classic Oldsmobiles
>
>
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