Guest Join UsHello Guest,
Please feel free to join us!
Unlock sections of the Phorum that non-members cannot see.
Sign up for Phorum membership today! or Register


Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Philco 84 Transformer Questions
#1
The Philco Schematic I have says the Transformer in the Phico 84 (Philco 32-7180) is a 630v/6.3v/5.0v transformer. I gather the total power is about 50watt. I would like to know if anyone knows the rating for each voltage. Sadly, I need a replacement for my phico 84. If anyone has run into this before could you tell me your solution to finding a replacement?


Thanks



Jerry Rego
Panama City Florida
Reply
#2
Your 6.3V supplies 0.3+0.3+0.7+0.25=1.55A
Your 5V supplies 2A

I do not know exactly how much the 630V supplies, (well it is centertap so it is 1/2 that rectified) but since the heater power is known, 20W (from above) and the total power is 43W so the 630V supplies about 23W then (43-20 ) which makes it 39mA but then each half conducts 1/2 time so it is 73mA.

So, give it some margin, like 20% maybe...

So, 6.3V/2A, 5V/2.5A, 630V/0.09A


PS. After looking at the org specs I can see they did not use margin, and rated the windings exactly with what I calculated.
6.3/1.5A, 5/2A and the 630V is at 55mA meaning they count on not drawing maximum power continuously.
Reply
#3
(01-20-2015, 03:56 PM)Jerry_Rego Wrote: The Philco Schematic I have says the Transformer in the Phico 84 (Philco 32-7180) is a 630v/6.3v/5.0v transformer.  I gather the total power is about 50watt.  I would like to know if anyone knows the rating for each voltage.  Sadly, I need a replacement for my phico 84.  If anyone has run into this before could you tell me your solution to finding a replacement? Thanks
Jerry Rego
Panama City Florida

http://www.oldradioparts.com/  > shows one in stock? but he is closed for an illness. Might email him. John
Reply
#4
Here are the original specs of Philco P/N 32-7180:

HV: 630 VCT @ 55 mA
6.3V @ 2A
5V @ 2A

For an extra margin of safety, go with Mike's (morzh) figures. Icon_thumbup
--
Ron Ramirez
Ferdinand, IN
Я этого не понимаю
Reply




Users browsing this thread: 1 Guest(s)

About Philco Phorum

The Philco Phorum is a family-friendly place for the discussion of Philco radios and related items.

Please feel free to join us! Unlock sections of the Phorum that non-members cannot see. Sign up for Phorum membership today!

           Quick Links