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

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

Linear Mode
Model 20 power transformer
Ron Ramirez
Silent Key
*****
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
Find
« Next Oldest | Next Newest »
Thread Closed


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



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
1930s Stewart-Warner Tombstone Radio need help identifying model number
UPDATE: I was able to pick up a signal generator on the cheap (amazingly enough) on feebay and I did an IF alignment fol...captainclock1988 — 09:53 AM
Philco 91 Schematic
Hi Rod, The resistor connects to pin 4 and the ungrounded side of block 9. From pin 9 of the RF tube to one side of ...dconant — 09:34 AM
Just got a 49-1613 need to know...everything!
I just found your post. I have this exact same model, and have had it since 1985 when I was 15 years old! I performed a ...MuzzcoVW — 09:11 AM
B&K 1077B no video
Hello Tim, I would if it's a leaky Capacitor So are all 3 of those B- voltages low then ? Sincerely Richardradiorich — 01:55 AM
B&K 1077B no video
I found a schematic and think I have the problem traced down to the minus power supply. I have very low voltages that go...TV MAN — 12:41 AM
RCA 15X
I'd try replacing the bulb first and if that doesn't do it, then change the 35Z5 and see if the problem goes away.NostalgiaRadioTime — 12:28 AM
B&K 1077B no video
Hello Tim, I have that exact unit in my shop too plus a Sencore unit there are times I like one or other !!. Sincerely...radiorich — 11:07 PM
RCA 15X
Everthing goes at once, maybe it's the cold weather, I have had 2 dial strings break and no my little RCA is having dial...Paul Philco322 — 10:26 PM
Philco 91 Schematic
Hi Dan, I can't explain this specific resistor but I have seen the use of a switch to apply B+ voltage to screen gri...RodB — 09:36 PM
6TPZ and 5TPO Radio Help
I suspect it's been repaired before. And I suspect whoever repaired it, wanted to re-use old transistors' pin stubs in o...morzh — 09:24 PM

[-]
Who's Online
There are currently 9613 online users. [Complete List]
» 1 Member(s) | 9612 Guest(s)
Avatar

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