Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Model 60B Tapped Power Resistor #7998
#1

I need a little help.  I'm getting ready to restore a late run Model 60 and I'm going over all the parts and their locations to familiarize myself with the set before I dig in.  I plan on replacing all the capacitors and resistors, and of course repairing both coils.  My question concerns part #47 on the schematic Philco p/n 7998.  It is a tapped power resistor.  When doing a very quick look over I homed it and it checked good.  It doesn't look that good but it did check out OK.  The schematic shows that it is a 32 ohm and a 235 ohm resistor.  On the Philco websites this resistor is not one of those listed.  

What I'm trying to do is to find out what the wattage would be. It looks like at least a 10 watts.   I'd like to know this just in case I need to replace it with a modern resistor.  I can replace components and spiff up the chassis etc but I'm lacking the knowledge to look at the schematic and figure it out by myself.  I have the spec on the #80 rectifier tube but have little idea what to do with them to solve my question.

Would somebody please tell me how to figure it out.  I'm familiar with Ohms Law and I know what the resistance is but I'm unsure of what the voltage and current would be across this resistor.

I'm attaching the schematic for the radio.  It is #47 on the schematic.

Thanks in advance.  

(Ron, I know this isn't your favorite radio but I got it pretty cheap and I thought it would be good to do for the experience before I do the 116X.)


Attached Files Image(s)
   
.pdf 80.pdf Size: 108.13 KB  Downloads: 127

Crist


Messages In This Thread
Model 60B Tapped Power Resistor #7998 - by Crist Rigotti - 04-11-2015, 08:51 PM



Users browsing this thread: 4 Guest(s)
[-]
Recent Posts
Shadow Meter Bulb
Phorum members, I am trying to find the bulb # for PHILCO Shadow Meter part number 45-2180 that is from a 37-640 chassis...georgetownjohn — 06:53 PM
Philco 41-608 changer coupler
3D-printing...short of machining, of course. Or molding.morzh — 05:20 PM
Philco 41-608 changer coupler
Thanks, Morzh. That solves the issue of the rubber pieces. Now, I need to find a way to replicate the pot metal piec...alangard — 05:07 PM
12' Philco
If it is 12', either Kareem or Andre would have to jump pretty high to look at the front panel. Kareem would have an e...morzh — 01:48 PM
12' Philco
And here's a story about the tires on the truck. Same "no-stoop" guy must have installed these! Take care a...GarySP — 01:17 PM
Hickok AC51 tube tester
I think they have only shown the secondaries of the transformer. Two of them feed the rectifiers' filaments.morzh — 12:58 PM
IF can wire size and Rubber mounts?
Arran If the wire inside cans is the gauges you mentioned, the sole reason for that would be mechanical, to stiffen t...morzh — 12:56 PM
12' Philco
Rod, Yes, I know, but the Giant Philco is not around anymore either, so I go by whoever was alive fairly recently. H...morzh — 12:54 PM
Hickok AC51 tube tester
Absolutely no one is going to reverse engineer that circuit. Even the iron core is missing.RodB — 10:37 AM
IF can wire size and Rubber mounts?
Thanks to both members for your help regarding wire and tuner mtg supports. regards--Johngeorgetownjohn — 09:33 AM

[-]
Who's Online
There are currently 5377 online users. [Complete List]
» 2 Member(s) | 5375 Guest(s)
AvatarAvatar

>