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

Philco 89 Pwr Trans
#4

I pulled apart the transformer and it looks like it got really hot at some point and has a burnt smell when you sniff close to the paper insulation.  I found a used one, same part number, that looks much better with no charred spots or dripping wax.  I repaired the wiring and with no load all of the windings read the correct voltages.  But I did notice that after about 100 vac on the variac the primary ac current starts to bump up a bit and settles at about 160 ma.  With no load I thought that I wouldn't see much if any current draw from the trans.  Does anyone know if this is normal or maybe an indication of shorted turns?  Like I said, all of the voltages are right on target and I'm not measuring any leakage from the windings to the frame.

   

***********
Dave Thomas
Coatesville, PA


Messages In This Thread
Philco 89 Pwr Trans - by RadioDR401 - 03-15-2017, 02:15 PM
RE: Philco 89 Pwr Trans - by morzh - 03-15-2017, 02:31 PM
RE: Philco 89 Pwr Trans - by Jim Koehler - 03-15-2017, 05:58 PM
RE: Philco 89 Pwr Trans - by RadioDR401 - 04-03-2017, 04:59 PM
RE: Philco 89 Pwr Trans - by Mondial - 04-03-2017, 05:19 PM
RE: Philco 89 Pwr Trans - by morzh - 04-03-2017, 05:28 PM
RE: Philco 89 Pwr Trans - by Mondial - 04-03-2017, 08:54 PM
RE: Philco 89 Pwr Trans - by RadioDR401 - 04-03-2017, 10:12 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
A Marconi model 86
Dan; I've seen some Marconi sets like that before, one was a console though I'm not sure if it was a model 86. It's a...Arran — 05:09 PM
An attempt to remove the Field Coil from a G speaker
Milkjug plastic? Whatever is chosen for the spider, the material must be compatible with popular adhesives... Th...Chas — 05:05 PM
An attempt to remove the Field Coil from a G speaker
Mike; I would not use plastic from a milk jug for a spider, first it's polyethylene/polypropylene which resists most ...Arran — 04:56 PM
Philco model 60
This is my thread on 60 from 2016. I had to rewind the osc coil, and I actually counted the turns and then rewound i...morzh — 03:34 PM
Philco model 60
Yes, Mark belongs to the same Michigan Antique Radio Club that I do. I suspect that the oscillator coil is in need of a ...Radios1340 — 03:10 PM
A Marconi model 86
Yeah. I am dreading the thought of what to do with all my consoles when I will no longer be able to move them around. I...morzh — 02:51 PM
1947 Silvertone 7086 Wire Recorder/Phono/Radio on YouTube
Cool gadget, Buzz. I took me a couple of second to undestand that that oscillating thing makes the wire to spool correc...morzh — 02:50 PM
A Marconi model 86
My back hurts already, you could build a house with all the wood. PaulPaul Philco322 — 02:49 PM
1947 Silvertone 7086 Wire Recorder/Phono/Radio on YouTube
Part 4 of this series now uploaded link below to anyone interested Buzz — 02:39 PM
Philco model 60
Welcome to the Phorum, Radios1340!  The oscillator coil on the 60 is a common culprit.  I just bought a 60B (June 1934) ...GarySP — 02:33 PM

[-]
Who's Online
There are currently 5004 online users. [Complete List]
» 3 Member(s) | 5001 Guest(s)
AvatarAvatarAvatar

>