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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



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