phono matching transformer - Printable Version

+- The PHILCO Phorum (https://philcoradio.com/phorum)
+-- Forum: Philco Radio Discussions (https://philcoradio.com/phorum/forumdisplay.php?fid=5)
+--- Forum: Philco Electronic Restoration (https://philcoradio.com/phorum/forumdisplay.php?fid=8)
+--- Thread: phono matching transformer (/showthread.php?tid=5026)

---

phono matching transformer - Bones007 - 07-29-2012

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.

---

RE: phono matching transformer - Radioroslyn - 07-30-2012

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

---