1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
47-1227 Output transformer
Ron Ramirez
Silent Key
*****
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#3

02-17-2010, 04:15 PM
Sounds to me like the original has shorted turns and needs to be replaced.

According to Philco's 1957 parts catalog, you need one with a 9000 ohm primary impedance to match a 3.5 ohm voice coil (secondary). The same catalog says 15 watts which I believe is a mistake; push-pull 6K6 tubes have to be pushed really hard to get 10 watts output.

And as Jim pointed out, make sure that power transformer is still good! A lot of those 1946-47 Philco radio-phonograph consoles have burned out power transformers; this was apparently a weak spot in those models (46-1209, 46-1226, 47-1227, 47-1230).
--
Ron Ramirez
Ferdinand IN
Find
« Next Oldest | Next Newest »


Messages In This Thread
47-1227 Output transformer - by keith49vj3 - 02-15-2010, 10:38 PM
Re: 47-1227 Output transformer - by Jim Berg - 02-17-2010, 02:34 PM
Re: 47-1227 Output transformer - by Ron Ramirez - 02-17-2010, 04:15 PM
Re: 47-1227 Output transformer - by keith49vj3 - 02-17-2010, 08:13 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Shadow Meter Bulb
Phorum members, I am trying to find the bulb # for PHILCO Shadow Meter part number 45-2180 that is from a 37-640 chassis...georgetownjohn — 06:53 PM
Philco 41-608 changer coupler
3D-printing...short of machining, of course. Or molding.morzh — 05:20 PM
Philco 41-608 changer coupler
Thanks, Morzh. That solves the issue of the rubber pieces. Now, I need to find a way to replicate the pot metal piec...alangard — 05:07 PM
12' Philco
If it is 12', either Kareem or Andre would have to jump pretty high to look at the front panel. Kareem would have an e...morzh — 01:48 PM
12' Philco
And here's a story about the tires on the truck. Same "no-stoop" guy must have installed these! Take care a...GarySP — 01:17 PM
Hickok AC51 tube tester
I think they have only shown the secondaries of the transformer. Two of them feed the rectifiers' filaments.morzh — 12:58 PM
IF can wire size and Rubber mounts?
Arran If the wire inside cans is the gauges you mentioned, the sole reason for that would be mechanical, to stiffen t...morzh — 12:56 PM
12' Philco
Rod, Yes, I know, but the Giant Philco is not around anymore either, so I go by whoever was alive fairly recently. H...morzh — 12:54 PM
Hickok AC51 tube tester
Absolutely no one is going to reverse engineer that circuit. Even the iron core is missing.RodB — 10:37 AM
IF can wire size and Rubber mounts?
Thanks to both members for your help regarding wire and tuner mtg supports. regards--Johngeorgetownjohn — 09:33 AM

[-]
Who's Online
There are currently 4683 online users. [Complete List]
» 1 Member(s) | 4682 Guest(s)
Avatar

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