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

Linear Mode
Output transformer secondary Lugs for PP42 on Model 650?
Sourbone
Member
***
Posts: 63
Threads: 29
Joined: Feb 2010
City: Richland, Michigan
#1

03-06-2016, 01:38 PM
I am replacing an output transformer on a model 650. I have a Hammond 125E output transformer. I'm trying to determine which lugs to connect to the speaker from the secondary. Please educate me. I'm halfway there. I was looking at Franks Electron tube data sheets page. The RCA literature for the 42 tube in push pull configuration says the load impedance is 10,000 ohms. Is this the info used for determining the correct output transformer secondary lugs? The speaker voice coil is about 1 ohm. So I would think that the secondary lugs 4 & 5 on the Hammond 125E would be correct. Is my thinking correct? Thanks for your help. Dave


Attached Files Image(s)
   
(This post was last modified: 03-06-2016, 02:27 PM by Sourbone.)
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
Output transformer secondary Lugs for PP42 on Model 650? - by Sourbone - 03-06-2016, 01:38 PM



Users browsing this thread: 4 Guest(s)
[-]
Recent Posts
6TPZ and 5TPO Radio Help
1 - 0v - correct 2 - 0v - correct 3 - 0v - --------------------- both 3 and 4 should be the same. Check L2 for being ope...morzh — 05:15 PM
B&K 1077B no video
I'm going to get back into it tonight. but I disconnected the 2 main resistors off this supply going to different parts ...TV MAN — 04:04 PM
6TPZ and 5TPO Radio Help
Sorry. The test points are as follows: 1 - 0v 2 - 0v 3 - 0v 4 - 12v 5 - 0v 6 - 11.9v 7 - 12v 8 - 12v 9 - 12v...R3Sons — 02:09 PM
6TPZ and 5TPO Radio Help
OK, so 18 and 19 as they should be. What is "everything else?" Try to be more specific in your descriptions:...morzh — 12:44 PM
6TPZ and 5TPO Radio Help
Yeah, I'm still on 5TPO. Sorry, my bad, points 1 and 2 should be points 18 and 19 (easy mistake  :think: )  X7 is shown ...R3Sons — 11:42 AM
Philco 40-120C Filament Wiring
Hi folks, I'm in the process of restoring a Philco 40-120C and I'm finding the wiring to be a bit puzzling. According to...bluecap — 11:28 AM
462ron
Hi Levi, here’s just a thought. Most radios run the oscillator higher than the dial setting. Say you set your radio to 1...462ron — 10:10 AM
1930s Stewart-Warner Tombstone Radio need help identifying model number
Another Update: I found a couple of damaged coils inside this radio that might have something to do with why this radio ...captainclock1988 — 10:51 PM
6TPZ and 5TPO Radio Help
If you are still on 5TPO, you lost me there. What X7? What Points 1 and 2?morzh — 08:37 PM
6TPZ and 5TPO Radio Help
Quick progress report: X7 is broken. Only one leg soldered, the other missing and the diode is cracked. I've replaced...R3Sons — 05:05 PM

[-]
Who's Online
There are currently 6750 online users. [Complete List]
» 2 Member(s) | 6748 Guest(s)
AvatarAvatar

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