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

phono matching transformer
#1

Hi all, I am currently restoring a 46-1209, The radio is playing great, now the phono is dead, I thought it might be the cartridge, but I see my matching transformer is missing. Is there a modern replacement I could use for this? The riders I have is bad , and the windings look like they should be
Pri - .5 and sec - 6500? seems like a big step up, if I am reading this right.
Any ideas or suggestions are apreaciated.
Thanks
E.
#2

Hi E.,
Bear in mind that the measurements you see on the Riders is resistance not impedance. The impedance (Z) is the important measurement when you are looking for a replacement. So with being said just for laughs you could try a tube type output transformer, speaker side to the cartridge or a small power transformer like 120vac to 24v or 36v. The low voltage side goes to the cartridge. I mention these thinking you may have them laying around. You could use a microfone input transformer. The those have a multi tap primary from 50 ohms (Z) to 500 or so.
GL
Terry




Users browsing this thread: 2 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 no members online.

>