Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Mershon Caps - no not those
#1

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.
#2

That's a strange one. Looks like it's ready for launch.
#3

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
#4

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
#5

Keep in mind, that one is bigger around than a beer can.
Yes it is a Crosley 57.
#6

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
#7

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.

   
#8

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

Pacing the cage...
#9

Sparton used caps like that (not copper though) in their early models like the 931 and 400.
[Image: http://farm4.staticflickr.com/3297/45665...ac2a_z.jpg] [Image: http://farm3.staticflickr.com/2792/41207...ff49_z.jpg]
#10

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
#11

All of the ones I have found with the contacts up are still full of electrolite, and green crud.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
trying to identify this wire type
The red wire is rubber covered wire. The others are cotton braid over rubber often in colors or a tracer, also strand...Chas — 02:43 PM
trying to identify this wire type
Greetings Phorum members, Hope you can help me identify this type of wire in the photo I have attached.  I am not sure ...georgetownjohn — 01:53 PM
Philco 60 Squealing
All correct shields must be in place, all tubes correct no subs of any kind. Check any soldered, riveted ground conne...Chas — 01:24 PM
Philco 60 Squealing
I have recapped and replaced out of tolerance resistors and so on. Radio plays nicely on fairly strong stations. The pro...dconant — 10:55 AM
Philco 46-420 Code 121 Reception issues
Welcome Eric, I agree with Bob and far as the two main electrolytic filter capacitors did you change them yourself or w...radiorich — 11:43 PM
Philco 46-420 Code 121 Reception issues
You mentioned the Philco manual and going through the check points...just to be sure we're on the same page here's the m...klondike98 — 08:13 PM
Philco 42-1008 conversion kit
Interesting. I haven't seen that before.klondike98 — 07:02 PM
12' Philco
Yes I had looked for it on the web as well some time back and could not find it. I was glad to see it turned up in Ron'...klondike98 — 06:59 PM
Shadow Meter Bulb
Now if you had a set with a tuning light then the bulb type is important to the circuit, some sets used those prior to t...Arran — 04:58 PM
Shadow Meter Bulb
Ok. Thanks for the correction.RossH — 03:09 PM

[-]
Who's Online
There are currently 4754 online users. [Complete List]
» 1 Member(s) | 4753 Guest(s)
Avatar

>