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

Thread Closed

Philco Model 80 Transformer resistance
#1

I have a feeling the primary winding on the power transformer is bad. My resistance reading on the primary side is 9 ohms at points 1 and 2 on the schematic. The schematic shows a value of 1042 ohms. I found an old thread where the OP had roughly the same reading but the thread ended without any further information on the transformer findings so now I'm questioning my findings. All other windings read good. Can any one confirm my suspicions? Thanks!
#2

The DC resistance of the primary is 8 to 9 Ohm.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#3

Thanks for the quick reply!

Hmm...well that's good, so what am I seeing that's 1042 ohms on the schematic for the power transformer across points 1 and 2? All other points measured read roughly what is shown.
#4

My $0.02 is that it is a misprint. I tried to look up the value for the similar 84 and 37-84, and ther is no resistance reading for any of the power transformer windings.

"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis

Best Regards, 

MrFixr55
#5

Just forget this number, it is useless anyway.
Simply proceed with your project.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.




Users browsing this thread:
[-]
Recent Posts
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
54C Complete Teardown/Rebuild
The main problem with adding a Bluetooth input is that this set lacks a traditional power transformer to isolate it from...radiorich — 11:19 PM
54C Cabinet Refinish
I started stripping this cabinet before it got super chilly out because I knew I wasn't going to be able to work on ...glyphmon — 11:18 PM

[-]
Who's Online
There are currently 1576 online users. [Complete List]
» 2 Member(s) | 1574 Guest(s)
AvatarAvatar

>