Mershon Caps - no not those - Printable Version
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Mershon Caps - no not those - Phlogiston - 02-10-2013
We have all seen the copper Mershon caps in a 70 or 90, but have you ever seen one like this?
Two times 8mfd - now 2 X 10mfd at 630V.
It's a Crosley.
RE: Mershon Caps - no not those - kporter - 02-10-2013
That's a strange one. Looks like it's ready for launch.
RE: Mershon Caps - no not those - Radioroslyn - 02-10-2013
I have but it was a long time ago. I'm pretty sure it was in a Crosley, early AC set like a Gem Box.
Terry
RE: Mershon Caps - no not those - Arran - 02-10-2013
I've seen them, used in some Rogers sets in the early 1930s, DeForest Crosley too maybe, also in an Atwater Kent I think, in fact some of the first Mershon electrolytics I ever saw were those big can types. I have a Rogers that had an aluminum Mallory replacement for one of those, it was a pair of dry electrolytics inside, some Sparton radios used them too I think. That may have been why they were squat, an early dry electrolytic design.
Regards
Arran
RE: Mershon Caps - no not those - Phlogiston - 02-11-2013
Keep in mind, that one is bigger around than a beer can.
Yes it is a Crosley 57.
RE: Mershon Caps - no not those - Radioroslyn - 02-11-2013
That was the thing that stuck out in my mind was it had such a long strap to go around it(compared to most others I've seen.) Also National might have used them also in there early doghouse power supplies.
Terry
RE: Mershon Caps - no not those - Phlogiston - 02-11-2013
Another observation is that many manufactures mounted them contacts up, rather than down, like in a Philco. I have them in an ERLA mounted that way as well.
These, I made, but you get the idea.
RE: Mershon Caps - no not those - Conelrad - 02-11-2013
That was a popular style cap for the early amateur transmitter builder.
I've seen a number of them in that capacity (ha!) used with AWA retro projects.
Faradon was another company making that style.
Dennis
RE: Mershon Caps - no not those - Bob Andersen - 02-11-2013
Sparton used caps like that (not copper though) in their early models like the 931 and 400.
[Image: http://farm4.staticflickr.com/3297/4566534975_824af8ac2a_z.jpg] [Image: http://farm3.staticflickr.com/2792/4120797731_614bafff49_z.jpg]
RE: Mershon Caps - no not those - Arran - 02-11-2013
I guess it would depend on if the Spartons still had their original filter cans, or even which production run they were, one of my Rogers sets had what I am sure was a Mallory replacement mounted in the clamp. Believe it or not the capacitor manufacturers and parts jobbers used to offer bolt in replacements for these things for a number of years after most radio manufacturers quit using them.
Regards
Arran
RE: Mershon Caps - no not those - Phlogiston - 02-12-2013
All of the ones I have found with the contacts up are still full of electrolite, and green crud.