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Model 20 power transformer
Ron Ramirez
Silent Key
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Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#3

10-26-2007, 03:17 PM
Happened to have a 1941 Philco catalog (on PDF) handy, here's the specs of your power transformer:

5-3/8" high, 3-7/8" wide, 3-1/4" deep. You'll need to measure the spacing between the mounting holes on your transformer.

Primary - 110 volts, 50-60 cycles. (For your new one, specify 125 or 130 volts for the primary.)

High voltage - 700 volts center-tapped (also known as 350-0-350V), 80 mA DC

Filament #1 - 2.5V center-tapped, 7 amps

Filament #2 - 5V center-tapped, 2 amps

Filament #3 - 5V, 2 amps (for rectifier filament, no center tap)
--
Ron Ramirez
Ferdinand IN
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Messages In This Thread
Model 20 power transformer - by Danny - 10-26-2007, 11:03 AM
[No subject] - by Ron Ramirez - 10-26-2007, 03:10 PM
[No subject] - by Ron Ramirez - 10-26-2007, 03:17 PM
[No subject] - by Danny - 10-27-2007, 12:11 PM
[No subject] - by Ron Ramirez - 10-27-2007, 12:35 PM
[No subject] - by Danny - 10-27-2007, 02:28 PM
[No subject] - by davemc - 10-29-2007, 12:08 PM
[No subject] - by Terry Judkins - 10-29-2007, 07:47 PM
[No subject] - by davemc - 11-02-2007, 07:02 AM
[No subject] - by Danny - 11-10-2007, 01:17 PM
[No subject] - by Danny - 11-16-2007, 07:12 PM



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