Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

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

Philco 42-380 conflicting wiring vs schematic
#16

All that plus the 600ma filament current for a 6X5! Gather round the heater kids and I'll read you a story.
#17

Thanks for the info Arran.

In checking out the transformer specs I found another post with info on many types.  The installed transformer is not the same part # as the specs and is apparently rated lower on filament current and higher on secondary voltage.   According the the previous post this could have been an attempt by Philco to use up inventory prior to stopping production prior to the war.  Perhaps the rewiring (which I have removed) was related to this.   The schematic  calls for 195Volts on the B+ line and 41's and around 100v on other plates.   I will need to add some resistances to compensate for the rectifier diodes anyway and for the resistance of the speaker field coil.  Getting rid of the 6X5 will reduce filament current load.  If that voltage is high there is plenty of room for a filament transformer.  The main transformer has never apparently been overheated.  Tests fine with a load on my Sencore Powerite.




Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
The list of my radio & TV collection!
Magical chords of forgotten melodies, old nostalgic music on an old radio... Saturday night blues on the Mid-Waves on an...RadioSvit — 12:20 PM
Philco 42-345 Restoration/Repair
Thank you MrFixr55 the issue with this radio is that the internal coil antenna is missing and there was a wire in its pl...osanders0311 — 11:34 AM
Philco 610B oscillator wiring
Regarding the oscillator circuit which is comprised of the 6A7's cathode, control grid, and screen grid. These elements ...Radioroslyn — 10:33 AM
Philco 42-345 Restoration/Repair
Hi OSanders, First off, welcome to the Philco Phorum where Phine Phamily-Phriendly Pholks Phull of Philco Phacts and P...MrFixr55 — 08:41 AM
Philco 42-345 Restoration/Repair
Today I've been reading through the site trying to learn more about this radio. I also soldered the lose power cord cabl...osanders0311 — 08:24 PM
Philco 610B oscillator wiring
Thanks David! I do have that same later prodution model 610 schematic. I've also studied the Philco service bulletins fo...Tubester — 08:12 PM
Philco 610B oscillator wiring
Some info from Beitmans says late production. David   David — 06:06 PM
Restoring Philco 96
Oh wow! Just found this thread.  Brings me back to early days on this phorum.  I did a 96 back in 2017.  Thread here: ...rfeenstra — 06:05 PM
Philco 610B oscillator wiring
Thanks for the replies. It's not the really the hum that I am after. Just trying to understand why only the shortwave ba...Tubester — 04:01 PM
Restoring Philco 96
70 and 90 are Superhets, but at least the 2x45 model of 90 uses the Plate detector (and so does 70). Also the Atwaters,...morzh — 03:28 PM

[-]
Who's Online
There are currently 3344 online users. [Complete List]
» 1 Member(s) | 3343 Guest(s)
Avatar

>