Lovely Tranny Found

theNoid · 17th May 2006, 07:09 PM

Ok, that subject sounds like a bad personal ad from Miami or San Francisco huh? HA!!! Anyhow, I ran across this at my local electronics junkyard/wharehouse and from memory thought it might work. But now I am thinking I wasted my money. This is a beefy tranny, with a nice built-on wiring box that when the top is off, reveals a nice wiring "buss" I guess is what it would be called. Anyhow check these pics out...

...and it is in brand new condition to boot. As for the label, it reads:

Pri.V. 125V
FREQ: 400
Sec.V. 26.5V
Watts: 250
Type: H4845
Electran MFG Co
Chicago, ILL USA

Does the 400Hz freq mean this won't work an LM4780 project and was a waste of money? I didn't notice that part until I got home.

Thanks for the input...

Noidster

theNoid · 17th May 2006, 09:54 PM

Ok, as I figured...the 400Hz thing throws it completely out of whack for what I need here. Ahh well, it was fun while it lasted...HA!!!

Noidster

Eva · 17th May 2006, 10:38 PM

At 60Hz it's not going to whitstand much more than one seventh of the rated voltages before the core saturates. It's intended to work with a 400Hz mains supply, like the one used in planes.

theNoid · 17th May 2006, 11:25 PM

Yeah that I now know. Oh well, I saw how clean it was and read the other specs and thought hey, this is the one I wanted. So through the drooling and such I shelled out $15 for it. Oh well, maybe I can find someone who may have a need for it somewhere....maybe.

Thanks,
Noidster

Wombat2 · 18th May 2006, 12:01 AM

eBay with a starting price of $15

Apex Jr · 18th May 2006, 03:49 AM

Chuck...

400 Hz is for the military, they can get a lot in a
small package and very hard to sell.

I've made mistakes in buying transformers and
variacs. At least with the variacs you can use them
at DC voltages, not in the transformers

Steve @ Apex Jr.

frank1 · 21st May 2006, 11:38 AM

Quote:

Originally posted by Apex Jr
Chuck...

400 Hz is for the military, they can get a lot in a
small package and very hard to sell.

I've made mistakes in buying transformers and
variacs. At least with the variacs you can use them
at DC voltages, not in the transformers

Steve @ Apex Jr.

More especailly, 400Hz is used in aircraft where the reduced core size saves weight.

Frank

17th May 2006, 07:09 PM	#1
theNoid diyAudio Member Join Date: Dec 2004 Location: Rock River, WY	Lovely Tranny Found Ok, that subject sounds like a bad personal ad from Miami or San Francisco huh? HA!!! Anyhow, I ran across this at my local electronics junkyard/wharehouse and from memory thought it might work. But now I am thinking I wasted my money. This is a beefy tranny, with a nice built-on wiring box that when the top is off, reveals a nice wiring "buss" I guess is what it would be called. Anyhow check these pics out... ...and it is in brand new condition to boot. As for the label, it reads: Pri.V. 125V FREQ: 400 Sec.V. 26.5V Watts: 250 Type: H4845 Electran MFG Co Chicago, ILL USA Does the 400Hz freq mean this won't work an LM4780 project and was a waste of money? I didn't notice that part until I got home. Thanks for the input... Noidster __________________ "Mmmmm......Beeeer"

17th May 2006, 09:54 PM	#2
theNoid diyAudio Member Join Date: Dec 2004 Location: Rock River, WY	Ok, as I figured...the 400Hz thing throws it completely out of whack for what I need here. Ahh well, it was fun while it lasted...HA!!! Noidster __________________ "Mmmmm......Beeeer"

17th May 2006, 10:38 PM	#3
Eva diyAudio Member Join Date: Oct 2003 Location: Near the sea	At 60Hz it's not going to whitstand much more than one seventh of the rated voltages before the core saturates. It's intended to work with a 400Hz mains supply, like the one used in planes. __________________ I use to feel like the small child in The Emperor's New Clothes tale

17th May 2006, 11:25 PM	#4
theNoid diyAudio Member Join Date: Dec 2004 Location: Rock River, WY	Yeah that I now know. Oh well, I saw how clean it was and read the other specs and thought hey, this is the one I wanted. So through the drooling and such I shelled out $15 for it. Oh well, maybe I can find someone who may have a need for it somewhere....maybe. Thanks, Noidster __________________ "Mmmmm......Beeeer"

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18th May 2006, 12:01 AM	#5
Wombat2 diyAudio Member Join Date: Nov 2003 Location: Brisbane	eBay with a starting price of $15

18th May 2006, 03:49 AM	#6
Apex Jr diyAudio Member Join Date: Jun 2002 Location: Torrance, Calif	Chuck... 400 Hz is for the military, they can get a lot in a small package and very hard to sell. I've made mistakes in buying transformers and variacs. At least with the variacs you can use them at DC voltages, not in the transformers Steve @ Apex Jr.

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