Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

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

37-624 Mail Filter Cap 34 is NON-POLARIZED
#14

Hi all,

I too am restoring one of these 37-624 sets. Mine still has the original Philco cap. The part number on it is 30-1271-X. It is marked non-polorized and is 8uf and 2uf at 200VDC. This is just in case the battery is connected backwards. I just purchased some 8.2uf & 2.2 uf film caps for use in this restoration. They are quite large, however if you have an old electrolytic can that is tall enough, you could restuff it with these caps. they are available from AES. Part number for the 8.2uf is C-FS8D2-630 and for the 2.2uf is C-FS2D2-630. I also purchased a 4.7uf for part number C-FS4D7-630 to use with the 8.2uf to restuff the filter cap next to the vibrator p/s. It was a tight fit, but I slightly modified the metal case to get all to fit and stacked them end to end. I just finished repairing and restoring the vibrator power supply and these film caps work great. It puts out 155volts DC with no ripple observed on my scope. These are film caps so polarity is not a problem. I did need to unsolder and pull the end cap off the vibrator and clean the contacts. I used some alcohol and a relay contact burnishing tool to clean the contacts. I then had to slightly tweek one of the contacts to get the square wave equal height and duration. And yes I did restuff the three metal can caps in that p/s as well as the buffer cap. It should now last a long time.
Feel free to email me with any questions.
Gerald D.


Messages In This Thread
RE: 37-624 Mail Filter Cap 34 is NON-POLARIZED - by harley92 - 02-01-2018, 06:30 PM
[No subject] - by Chuck Schwark - 02-25-2008, 09:28 PM
[No subject] - by davemc - 02-26-2008, 07:13 AM
[No subject] - by Ron Ramirez - 02-26-2008, 07:59 AM
[No subject] - by davemc - 02-26-2008, 08:13 AM
[No subject] - by Steve D - 02-26-2008, 12:38 PM
[No subject] - by davemc - 02-26-2008, 01:06 PM
[No subject] - by davemc - 03-03-2008, 06:07 PM
[No subject] - by Ron Ramirez - 03-03-2008, 11:10 PM
[No subject] - by davemc - 03-14-2008, 05:25 PM
[No subject] - by Ron Ramirez - 03-20-2008, 10:58 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
The list of my radio & TV collection!
Sorry, these are my old videos, so there are no English subtitles yet. RadioSvit — 06:00 AM
The list of my radio & TV collection!
Yes, MrFixr55. I agree with you, this Galicrafters is structurally very similar to the Zenith Transoceanic H500, as well...RadioSvit — 05:58 AM
The list of my radio & TV collection!
Hi Richard. I really like the Hickok, it is very convenient to use. I have another tube tester - the Soviet L1-3. It is ...RadioSvit — 05:27 AM
The list of my radio & TV collection!
Arran. I completely agree with you. I also noticed that the Canadian consoles General Electric, RCA and De Forest Crosle...RadioSvit — 05:11 AM
Electrolytic restuffing/internals
I don’t have a vise so I had to hold it in my hand. Not optimal but covered up by the hvac tape in the end. I have a few...bridkarl — 11:52 PM
Electrolytic restuffing/internals
Bridkarl A question. For a hacksaw the cut looks a little...jagged. Why?morzh — 11:45 PM
The list of my radio & TV collection!
As usual, an interesting post from you, Peter. This seems to be similar to the RCA 3-BX-671 and the Zenith Transoceanic...MrFixr55 — 11:41 PM
The list of my radio & TV collection!
Hello Peter, Thank you for sharing your new video and looks like your weather is nice their too. it was like 25 Cel...radiorich — 11:05 PM
Electrolytic restuffing/internals
hello bridkarl, I will post some better photos ! Sincerely Richardradiorich — 10:14 PM
Electrolytic restuffing/internals
I just taped the two pieces of the cap together, but I can see your method is better. I just held the lead in with solde...bridkarl — 08:18 PM

[-]
Who's Online
There are currently 1236 online users. [Complete List]
» 1 Member(s) | 1235 Guest(s)
Avatar

>