Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Model 87 Audio input xformer and output xformer to 45 tubes
#1

Does anyone know the impedances of these transformers or a way to calculate it from a tube manual ? I see many transformers available and might work but they are too expensive to play hit and miss.

Thanks
Jim
#2

Hi Jim,
If it is the trans #25 connecting between the first AF 226 and the second AF 245's you can use the Hammond HX124A from Radio Daze. I used it on mine and it works great. Hope this helps,
Richard
#3

Richard:
Thank You ! Half my battle is over. That was exactly the transformer I was considering but unsure until you verified it.
Now I am chasing down tou output transformer from the plates of the 45's to the speaker. One side of the primary is open. I was considering the Hamond P-T1615.


Jim
#4

Jim, You are talking about the trans on the speaker #36. If so check all the connections. I had one that had the same problem. I checked and found a bad solder connection at the trans side of the cable. I cleaned and re soldered and it worked fine. If not, I will try to get the resistance of the trans for you to match.
Richard




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Correct model 84 Ac plug an cord type
I remember a bakelite "lampshade" (a fancy lampshade) style plug being available in the hardware store when I ...MrFixr55 — 10:39 AM
Correct model 84 Ac plug an cord type
Hello Arran Yes, I also like the lampshade style plug ! Sincerely Richardradiorich — 08:46 AM
Restoring Philco 38-14
Hello morzh, Nice explanation on the x and y capacitors and glad you are narrowing down the issue with this set ! Si...radiorich — 08:43 AM
Correct model 84 Ac plug an cord type
From what I read Philco went to using brown rubber power cords in 1936, so cloth was used in the 1935 and earlier models...Arran — 11:25 PM
Correct model 84 Ac plug an cord type
Hi Bruce, I have not worked on an 84, but in general, power cords for almost any radio prior to 1938 was cloth covered...MrFixr55 — 08:34 PM
Restoring Philco 38-14
OK, well, so after staring at the sch again, I realized the problem had to be the #12/12A padder. I put a scope on the o...morzh — 08:15 PM
Correct model 84 Ac plug an cord type
Hello Bruce, I mostly use brown far as my cloth powercords go ! Here is the plug that I have used bakelite Acorn style...radiorich — 08:05 PM
Correct model 84 Ac plug an cord type
Looking for as correct as can find the right Ac plug an the correct colored cloth line. Ive seen many old photos but mos...Bruce — 04:13 PM
Restoring Philco 38-14
Rod Two Y-caps make sense if you use them from L/N to the chassis; this is only makes sense in the transformer radios w...morzh — 10:11 AM
Restoring Philco 38-14
Mike, I'm curious about a specific use of he Y cap. Lately I've seen a single cap across the power transformer primary. ...RodB — 09:01 AM

[-]
Who's Online
There are currently 3358 online users. [Complete List]
» 1 Member(s) | 3357 Guest(s)
Avatar

>