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

Philco 50 (Nathan's)
#10

Speaking of resistors, last night I went through and checked them against measured values:

No.   Expected    Actual        Verdict
9     32K         103K          bad!
11    10K         11.2K         good
13    240K        346K          bad
14    490K        593K          a bit off
20    490K        (infinity)    really bad!
21    160K        214K          bad
23    15K         16.1K         good
26    25K         23.5K         good
29    99K         140K          bad
27    99K         148K          bad

So most are pretty far out of tolerance.
Time to break out the repro resistor production line!


Messages In This Thread
Philco 50 (Nathan's) - by Nathan Slingerland - 12-19-2016, 09:37 PM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-19-2016, 09:42 PM
RE: Philco 50 (Nathan's) - by klondike98 - 12-19-2016, 10:10 PM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-20-2016, 12:10 AM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-20-2016, 01:02 AM
RE: Philco 50 (Nathan's) - by Radioroslyn - 12-20-2016, 01:06 AM
RE: Philco 50 (Nathan's) - by Radioroslyn - 12-20-2016, 01:02 AM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-20-2016, 01:05 AM
RE: Philco 50 (Nathan's) - by Radioroslyn - 12-20-2016, 01:09 AM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-20-2016, 01:16 AM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-20-2016, 01:34 AM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-20-2016, 01:47 AM
RE: Philco 50 (Nathan's) - by klondike98 - 12-20-2016, 09:08 AM
RE: Philco 50 (Nathan's) - by TV MAN - 12-20-2016, 11:40 AM
RE: Philco 50 (Nathan's) - by morzh - 12-20-2016, 12:54 PM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-20-2016, 02:00 PM
RE: Philco 50 (Nathan's) - by Ron Ramirez - 12-20-2016, 03:31 PM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-20-2016, 04:43 PM
RE: Philco 50 (Nathan's) - by TV MAN - 12-20-2016, 09:39 PM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-20-2016, 10:28 PM
RE: Philco 50 (Nathan's) - by morzh - 12-21-2016, 12:51 AM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-21-2016, 01:30 AM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-21-2016, 01:47 AM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-21-2016, 01:54 AM
RE: Philco 50 (Nathan's) - by klondike98 - 12-21-2016, 10:21 AM
RE: Philco 50 (Nathan's) - by morzh - 12-21-2016, 12:02 PM
RE: Philco 50 (Nathan's) - by TV MAN - 12-21-2016, 01:05 PM
RE: Philco 50 (Nathan's) - by morzh - 12-21-2016, 02:07 PM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-22-2016, 01:59 AM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-22-2016, 02:09 AM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-23-2016, 01:49 AM
RE: Philco 50 (Nathan's) - by morzh - 12-23-2016, 09:16 AM
RE: Philco 50 (Nathan's) - by Ron Ramirez - 12-23-2016, 09:23 AM
RE: Philco 50 (Nathan's) - by klondike98 - 12-23-2016, 09:48 AM
RE: Philco 50 (Nathan's) - by TV MAN - 12-23-2016, 11:21 AM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-23-2016, 02:07 PM
RE: Philco 50 (Nathan's) - by Ron Ramirez - 12-23-2016, 06:39 PM
RE: Philco 50 (Nathan's) - by Nathan Slingerland - 12-23-2016, 08:17 PM



Users browsing this thread:
[-]
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 1006 online users. [Complete List]
» 3 Member(s) | 1003 Guest(s)
AvatarAvatarAvatar

>