Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

84b Power Transformer
#1

Recently acquired a Philco 84b radio.  Have to rewire, recap, and replace the resistors, so I pulled the transformer too.  When I tested to see if any of the windings were open and came up with the below values.  My question is in regards to the low reading for the windings supplying the filaments.  Based on a handful of restoration videos for this model, the reading is usually around 1 ohm. My readings are obviously much lower.  This is my second restoration, having previously refurbished a curb-find Philco 41-608 that really only need to be recapped and rewired. So I'm still just a novice.  Any help would be appreciated.

Primary (terminals 1 & 2): 10.2 ohms
Secondary to filaments on output tube type 42 (terminals 3 & 4): .4 ohms
Secondary to rectifier tube type 80 filament (terminals 6 & 7): .4 ohms
Secondary to the plates on the rectifier tube type 80 (terminals 9 & 10): 413 ohms
CT (terminal 8) to terminal 9: 215 ohms
CT (terminal 8) to terminal 10: 199 ohms


Messages In This Thread
84b Power Transformer - by percyjd - 09-17-2022, 06:20 PM
RE: 84b Power Transformer - by Radioroslyn - 09-17-2022, 06:37 PM
RE: 84b Power Transformer - by percyjd - 09-17-2022, 06:45 PM
RE: 84b Power Transformer - by Simon Wa3uay - 09-17-2022, 06:59 PM
RE: 84b Power Transformer - by Radioroslyn - 09-17-2022, 07:08 PM
RE: 84b Power Transformer - by percyjd - 09-17-2022, 07:29 PM
RE: 84b Power Transformer - by Radioroslyn - 09-17-2022, 08:18 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco P45-6365 Universal Transformer Instruction Manual
Can anyone guide me to where this may be found?GRG — 03:00 PM
54C Complete Teardown/Rebuild
I don't think that I have encountered a 12Z3 before, curious how it uses one of those but includes a #43, which is a 25 ...Arran — 02:17 PM
HiFi (Chifi) tube amp build - but my own design.
It's the other forum. I'm also in DIY, but mostly read there. Honestly, I kinda jumped into this without much thought to...TV MAN — 10:43 AM
Philco 71 Code 125
Hello,  I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM
54C Complete Teardown/Rebuild
Hello Roy, here is this one sincerely Richardradiorich — 12:45 AM
54C Complete Teardown/Rebuild
Richard, Had grabbed it already but thank you just the same.  I find myself wanting to find some way to block out the...glyphmon — 12:03 AM
54C Complete Teardown/Rebuild
Hello roy, here is a link to the schematic . Sincerely Richardradiorich — 11:54 PM
54C Complete Teardown/Rebuild
Richard, The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM
Preliminary work on wife's Silvertone 2014
Did an alignment today which was interesting.  IF alignment went great, almost all was already spot-on.  Adjusting on th...glyphmon — 11:35 PM

[-]
Who's Online
There are currently 2686 online users. [Complete List]
» 1 Member(s) | 2685 Guest(s)
Avatar

>