Auckland Transformer Co Ltd: transformer data?

[sparking11553552743]

Hi,

Does someone have specs for their power transformer range?

I need winding voltages / currents data for model S3949-PT4

 

thanks,

JEFF

[Owen Y]

Moby doesn't seem to be in the house... but I've got a very old ATC catalogue which does not mention model S3949, but does list a PT4 power TX:

 

Prim: 230v

Secs: 280/280v 60mA, 6.3v 2A, 5v 2A.

 

Does that match up with the wires?

[sparking11553552743]

Yes, that matches up exactly Owen, thanks very much. I needed the current specs, esp for HT winding.

regards,

JEFF

[Owen Y]

Gidday Jeff,

 

Can you tell us about an interesting (valve) project that you have on hand?

 

[sparking11553552743]

Hi Owen,

Hmmmm, just realised the email address Ive assigned to this forum is an old one I dont use anymore. It explains why I wasnt getting notifications about posts. Duh !!!

 

Im presently refurbishing a Hallicrafters SX-28 communications receiver. It has 15 valves, is 34KG in weight. Circa 1942. Has a "hi-fi" output stage. 2 6V6s in push-pull, which is unusual.

Heres a link to an article and pics of the beast in case you're curious.

http://www.radioblvd.com/SX28Notes.html

regards,

JEFF

[Owen Y]

Are you a memeber of the NZ Vintage Radio Soc.?...

 

http://www.nzvrs.pl.net/

 

They have an extensive library & an extraordinary amount of member knowledge on such equipment.

[sparking11553552743]

Yes Im a member, and of our local radio preservation society.

Valve based technology was a big part of my early career. Lots of retraining since those days, but still greatly admire and love valve-based gear, esp radio.

JEFF

[RdM again]

Hi Owen,

 

May I please ask you to look at your old ATC  catalogue again?

 

(Sorry to trouble, but at least proof that old threads still exist!)

 

Two transformers:

 

One labelled PT80 ST224

 

I'm interested in the current rating, but nominal voltage would be good too. Blue primary, appears to be two red secondary 110V no load, and initially confusing, I thought a flex yellow would be HT center tap, but is evidently a 6.3V heater (thick wire, spaghetti) center tap.

 

Second, I may have two of. One has a torn label, no visible markings, but is in a little chassis with a baseboard marked with various: 0-230, 0-6.3-12.6, 0-55-150, 0-25-50.

 

Maybe good for heater & bias supplies, etc.

 

The similar one with same coloured multiple secondary wires cut off very short, has a label simply stamped "9490"

 

Also Auckland Transformer Co Ltd, 20 Eden Street Newmarket

 

Thanks for any help!

 

I've recently installed an old scanner, and intend to get some Beacon catalogue pages into a web-friendly format soon...