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

3650 beast of a tombstone!
#16

I haven't fired it up for a while but I remember being able to touch the tubes in my Radiola 17, including the 80. Granted, they are the globe style, so the bulb is somewhat removed from the business parts. The 16 actually does use a 5Z3, but the 3650 with its dual triode connected 42 AB2 PP Amp with 42 Triode Driver does use an 80. In class A, I think that the total plate and screen current for one 42 / 6F6 is about 50 mA. As for max current, If you have 2 42s in pentode AB2, that's 62mA Plate current total for both tubes, but that is for idle. I dunno what the full tilt boogie current is. A Class A 42 Pentode is 50mA. Figure 10mA each for all "signal" tubes (Converter, IF, RF, etc., so, yeah, they really are pushing the 80. Wonder why the 3650 used an 80 but the 16 uses a 5Z3?

"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis

Best Regards, 

MrFixr55




Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Philco model 38 code 121 not receiving signal.
Good news everyone! I think I have found everything I need for rewinding the antenna coil primary. I found some pla...Stormlord5500 — 09:40 AM
Philco Battery-WWII vintage
My younger sister went to SUNY Plattsburg NY, (BS, MS, RN) in the late 1970sabout 10 min from the Northern NY / Canada b...MrFixr55 — 07:59 AM
Philco Battery-WWII vintage
Hello Bob, What Amazing find! Sincerely Richardradiorich — 10:19 PM
Testing a speaker and output transformer Trutone A2-G
Hi Murf, Do this: Monitor between ground and one plate of the rectifier while playing the radio.  Do the same with ...MrFixr55 — 09:51 PM
Philco Battery-WWII vintage
Mike; I take it that Soviet cars did not come equipped with block heaters, hence the hot oil change? Where I lived in...Arran — 08:42 PM
Philco 42-345 Restoration/Repair
The more the better. (Within reasonable limits.) 2-5 times more is no problem in this case.Vlad95 — 03:50 PM
Philco 42-345 Restoration/Repair
Thanks, RodB and Vlad95, I was mainly trying to figure out this capacitor to locate a replacement, Vlad thank you for...osanders0311 — 03:44 PM
Testing a speaker and output transformer Trutone A2-G
Would an output transformer if weak, cause the problems I am seeing with lower B+ voltage? murfmurf — 01:22 PM
Testing a speaker and output transformer Trutone A2-G
Hello murf! I merged the threads. Please do not start new threads regarding the same radio. Take care, - GaryGarySP — 10:21 PM
Philco 42-345 Restoration/Repair
Regarding picture 5 on page 1 of this thread this capacitor is #40 on scematics diagram - 4mF+4mF. Black wire is "-...Vlad95 — 09:01 PM

[-]
Who's Online
There are currently 457 online users. [Complete List]
» 5 Member(s) | 452 Guest(s)
AvatarAvatarAvatarAvatar
Avatar

>