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
Best Regards, 

MrFixr55




Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Philco 91 Speaker Replacement
The spider is glued on the cone and so is the voice coil. I think you can use a cotton swab dipped in acetone and carefu...RodB — 02:42 PM
Restoring Philco 37-604C
Yes I saw that. If I knew, I'd probably try to arrange for getting it myself. But I have just got one. Which does not m...morzh — 01:44 PM
Philco 38-2 Automatic Tuning
When you push the lever, you are supposed to rotate the disk to the desired station. Then the magnetic tuning will acqu...morzh — 01:42 PM
Philco 38-2 Automatic Tuning
I figure out the muting from another picture that helped. Now I need to know how the automatic tuning works. When I push...dconant — 12:11 PM
Philco 91 Speaker Replacement
How would I go about removing the spider from the cone?dconant — 12:04 PM
Philco 38-2 Automatic Tuning
Hello, I am having trouble getting my automatic tuning to stay unmuted. If I play with the tuning handle I can get it to...dconant — 10:51 AM
Does anyone make photofinish replacements?
Here’s the link to the DIY photofinish section of our site: klondike98 — 09:46 AM
Delco car radio Peko vibrator converstion issues
Hi Richard, Thx for posting the schematic.  As I remember as a kid, these were great performers for the time, likely...MrFixr55 — 08:56 AM
Delco car radio Peko vibrator converstion issues
hello mr Fixr, The Electro  Powersupply that I am powering the radio with has a huge choke plus a 10,000ufd electrolyti...radiorich — 10:58 PM
Delco car radio Peko vibrator converstion issues
How about putting a choke in the power supply? The big cap was likely an attempt to stabilize the DC. Kids who cre...MrFixr55 — 09:19 PM

[-]
Who's Online
There are currently 2877 online users. [Complete List]
» 1 Member(s) | 2876 Guest(s)
Avatar

>