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

15X voltage issue
#3

Voltages across the 42’s look good:
• P to K: 273, SG to K: 284, Cg to K: 16, K to F: 16

Voltages across the 37’s look good except the K to F:
• P to K: 78 (1st) and 102 (2nd), Cg to K: 5, K to F: 6

Here are the other notable voltages, way outside of the specs:
• 1st Det CG to K: 3.9 should be .85
• OSC CG to K: 5.5 should be 15
• 2nd I.F. K to F: 6.0 should be 10

The audio transformer looks fine. Any idea what is dragging down my CG voltages? I am sure it is obvious but it is not clear to me yet.


Messages In This Thread
15X voltage issue - by Skip - 12-03-2012, 02:18 AM
RE: 15X voltage issue - by rghines1 - 12-03-2012, 10:08 AM
RE: 15X voltage issue - by Skip - 12-03-2012, 03:12 PM
RE: 15X voltage issue - by Skip - 12-07-2012, 09:43 PM
RE: 15X voltage issue - by Steve Davis - 12-07-2012, 11:13 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
A Marconi model 86
A backbreaker.....PaulPaul Philco322 — 08:12 PM
A Marconi model 86
>>What a behemoth! A Juggernaut.morzh — 07:47 PM
Philco 70 antenna lead
I am not sure I understood about the coils and the mush. I looked an more than one coil in 20, 70, 90, 60, Zeniths and ...morzh — 07:46 PM
A Marconi model 86
:e_biggrin: What a behemoth!  I hope the final result is as much a quality sounding example!  Keep us posted on your pro...GarySP — 07:32 PM
A Marconi model 86
I should add that the double conversion may only be used on the shortwave bands, but I haven't looked at the schematic t...Arran — 07:27 PM
Philco 70 antenna lead
Yes, that wire will not pick up much interference as routed - the RF at that level won't be affected, and if you have st...radio1 — 07:26 PM
Philco model 60
I'm also a member of MARC. Did you attend the Vintage Electronics Expo in Waterford, MI last month? That's where I got...GarySP — 07:22 PM
A Marconi model 86
Dan Double conversion is using two IF converters instead of one. This improves the image response. morzh — 07:15 PM
A Marconi model 86
Thanks Arran; I don't even know what a double conversion is, but i do have a good friend In Nova Scotia that would k...Dan Walker — 07:01 PM
A Marconi model 86
Dan; I've seen some Marconi sets like that before, one was a console though I'm not sure if it was a model 86. It's a...Arran — 05:09 PM

[-]
Who's Online
There are currently 4100 online users. [Complete List]
» 2 Member(s) | 4098 Guest(s)
AvatarAvatar

>