Weird old power transformers (filament, SS and tube) - $7 each!

pjanda1 · 12th July 2009, 01:51 AM

Here are three transformers that I'd rather not move. AFAIK, they came from a Hammond G-100 organ. All three appear to have been manufactured at Midwest Coil. All of my measurements were taken with 120V on the primaries and no load on the secondaries. All of them have cloth leads that are in fine, flexible shape. Buyer pays shipping. $7 each.

#1, This 7lb beaut might work as a filament transformer as it's secondary (center tapped) measures 7.6V unloaded. It really is pretty, with a nice glossy black finish, good fit, and no surface rust. Long, big leads.

#2 is a beastly 20lb'er with a 35.5V (again, unloaded) center tapped secondary. The leads are giant. I don't know what sort of voltage you SS guys are typically looking for, but if you need tons of current, this is your boy. It has some rust on the outside of the very nicely stacked lams. Nice long leads. This guy begs for a USPS flat rate box.

#3 has two secondaries, one is center tapped and measures 54V (10.7 ohms), the other has no CT and measures 262V (20.1 ohms). It is 9.5lbs and has some surface rust. The leads on this guy are short.

pj

pjanda1 · 6th August 2009, 04:05 PM

#2 is gone, but the others are still up for grabs.

I've also got the PT from an Eico Oscilloscope that I think is 450-0-450 (don't quote me on that). It has a winding for the CRT, but other than that it seem like it could work well for something like a SimpleSE.

pj

pjanda1 · 20th August 2009, 10:23 PM

Another addition:

Stancor PC-8301
415-0-415 (117 primary) Plate transformer (no filament winding) designed for choke input supplies. IIRC, 200 ma for choke input 150 ma for cap input. I bought this guy NOS for $40. It has a mechanical buzz. I tried a couple of things to remedy it, and I think it is there to stay. It runs cool, so it isn't saturating and is perfectly functional. This one would be perfect for a guitar amp or any amp where you don't need it to be dead silent. I'd like to get $10 for it. (buyer pays shipping).

pjanda1 · 8th September 2009, 03:01 PM

I've also got a couple of little 12.6V transformers. A used Stancor and a brand new Signal. How about a buck for the former and two bucks for the later?

pj

Captn Dave · 10th September 2009, 06:13 AM

PM Sent

pjanda1 · 14th September 2009, 07:30 PM

The 12V pair is spoken for.

pjanda1 · 29th March 2010, 04:17 PM

I also sold the Stancor. #'s 1 and 3 from above and the Eico are all still available.

Paul
Wild Burro Audio Labs - DIY Full Range Speakers

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12th July 2009, 01:51 AM	#1
pjanda1 diyAudio Member Join Date: Jan 2005 Location: The Nebraska Panhandle	Weird old power transformers (filament, SS and tube) - $7 each! Here are three transformers that I'd rather not move. AFAIK, they came from a Hammond G-100 organ. All three appear to have been manufactured at Midwest Coil. All of my measurements were taken with 120V on the primaries and no load on the secondaries. All of them have cloth leads that are in fine, flexible shape. Buyer pays shipping. $7 each. #1, This 7lb beaut might work as a filament transformer as it's secondary (center tapped) measures 7.6V unloaded. It really is pretty, with a nice glossy black finish, good fit, and no surface rust. Long, big leads. #2 is a beastly 20lb'er with a 35.5V (again, unloaded) center tapped secondary. The leads are giant. I don't know what sort of voltage you SS guys are typically looking for, but if you need tons of current, this is your boy. It has some rust on the outside of the very nicely stacked lams. Nice long leads. This guy begs for a USPS flat rate box. #3 has two secondaries, one is center tapped and measures 54V (10.7 ohms), the other has no CT and measures 262V (20.1 ohms). It is 9.5lbs and has some surface rust. The leads on this guy are short. pj

6th August 2009, 04:05 PM	#2
pjanda1 diyAudio Member Join Date: Jan 2005 Location: The Nebraska Panhandle	#2 is gone, but the others are still up for grabs. I've also got the PT from an Eico Oscilloscope that I think is 450-0-450 (don't quote me on that). It has a winding for the CRT, but other than that it seem like it could work well for something like a SimpleSE. pj

20th August 2009, 10:23 PM	#3
pjanda1 diyAudio Member Join Date: Jan 2005 Location: The Nebraska Panhandle	Another addition: Stancor PC-8301 415-0-415 (117 primary) Plate transformer (no filament winding) designed for choke input supplies. IIRC, 200 ma for choke input 150 ma for cap input. I bought this guy NOS for $40. It has a mechanical buzz. I tried a couple of things to remedy it, and I think it is there to stay. It runs cool, so it isn't saturating and is perfectly functional. This one would be perfect for a guitar amp or any amp where you don't need it to be dead silent. I'd like to get $10 for it. (buyer pays shipping).

8th September 2009, 03:01 PM	#4
pjanda1 diyAudio Member Join Date: Jan 2005 Location: The Nebraska Panhandle	I've also got a couple of little 12.6V transformers. A used Stancor and a brand new Signal. How about a buck for the former and two bucks for the later? pj

10th September 2009, 06:13 AM	#5
Captn Dave diyAudio Member Join Date: Jun 2008	PM Sent

14th September 2009, 07:30 PM	#6
pjanda1 diyAudio Member Join Date: Jan 2005 Location: The Nebraska Panhandle	The 12V pair is spoken for.

29th March 2010, 04:17 PM	#7
pjanda1 diyAudio Member Join Date: Jan 2005 Location: The Nebraska Panhandle	I also sold the Stancor. #'s 1 and 3 from above and the Eico are all still available. Paul Wild Burro Audio Labs - DIY Full Range Speakers

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