1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

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

Threaded Mode
37-10 mica cap
ttmiller
Junior Member
**
Posts: 18
Threads: 3
Joined: Apr 2015
City: Boise Idaho
#1

07-23-2015, 09:59 PM
37-10 schematic calls for 110uuf cap #45.
The cap is mica (broken lead) with 3 dots.
1st dot = blue
2nd dot same color as body of cap
3rd color = yellow.
Could use help to figure out what value to use and what kind.
Thanks
Terry Icon_crazy
Find
Bob Andersen
Phorum Expert
*****
Posts: 811
Threads: 43
Joined: Dec 2008
City: Chicago, IL
#2

07-23-2015, 11:42 PM
I've seen those colors on a few Philco mica caps. I think it was their own color scheme ? A modern 110pF 500 volt mica will work just fine. 100 or 120 are plenty close enough too.
Website Find
klondike98
Phorum Moderator
******
Posts: 5,206
Threads: 276
Joined: Nov 2012
City: Wilsonville State, Province, Country: OR
#3

07-24-2015, 12:36 AM
Blue Yellow was the Philco code for 110pF. See Chucks page on mica cap values.
Cheers,
Bob
[Image: https://www.dropbox.com/s/5m63ib99yfx2eg....jpg?raw=1]
Bob's Restorations Web Page
Website Find
ttmiller
Junior Member
**
Posts: 18
Threads: 3
Joined: Apr 2015
City: Boise Idaho
#4

07-24-2015, 07:01 PM
Wow! Thanks! I'm off and running.
Find
« Next Oldest | Next Newest »
Thread Closed




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Rogers Majestic R-646
Vlad; I was just reminded of something else, I'm not sure why but many Rogers built sets do seem to have open primari...Arran — 04:40 PM
Rogers Majestic R-646
Thanks RpdB I don't think there's much difference with interstage transformers of different models other than dimersion...Vlad95 — 03:27 PM
Rogers Majestic R-646
Vlad; I looks like your set has the same problem that mine did, both a bad output transformer, and a bad audio inters...Arran — 03:21 PM
Rogers Majestic R-646
Ouch! Not often the secondary takes a hit. Wish there was a better solution. I have a good interstage transformer but it...RodB — 02:59 PM
Rogers Majestic R-646
By the way, the bypass you suggested is a rare solution in some circuits. For example, this schematics solution is used...Vlad95 — 01:43 PM
Rogers Majestic R-646
No, you are wrong, because you did not know the details. Unfortunately, only ONE winding out of six is intact in both t...Vlad95 — 01:14 PM
Rogers Majestic R-646
The output 45s are still in push-pull because the transformer secondary winding is still in the grid circuit providing o...RodB — 11:52 AM
Rogers Majestic R-646
Thanks RodB for the help. But this is not a real solution to this situation, not even a temporary one. Because the firs...Vlad95 — 11:34 AM
Philco Model 16 wiring question
I was going to check the voltages as you suggested and hooked it up to my dim bulb. It appears I have a short. The bul...bobclausen — 10:34 AM
Rogers Majestic R-646
You can bypass the interstage transformer by disconnecting the primary, connect a load resistor of about 10k - 20k to th...RodB — 09:40 AM

[-]
Who's Online
There are currently 1044 online users. [Complete List]
» 4 Member(s) | 1040 Guest(s)
AvatarAvatarAvatarAvatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration