1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
40-180 Voltage High
rghines1
Member
***
Posts: 190
Threads: 8
Joined: Oct 2005
City: Lexington, SC
#4

03-30-2010, 05:48 PM
In many cases the voltages can be 20% higher than shown on the schematic. If voltages are well past 20%, then would suspect the audio output stage is not drawing much current. Schematic shows 180V on the plates of the 41 output tubes. What do read for the plate voltage on the 41 tubes? Check voltage on the 41 control grids, would expect about -15 volts.
Find
« Next Oldest | Next Newest »


Messages In This Thread
40-180 Voltage High - by Bruce C - 03-29-2010, 05:20 PM
Re: 40-180 Voltage High - by DeckApe - 03-30-2010, 09:36 AM
Re: 40-180 Voltage High - by Bruce C - 03-30-2010, 10:48 AM
Re: 40-180 Voltage High - by rghines1 - 03-30-2010, 05:48 PM
Re: 40-180 Voltage High - by Bruce C - 03-30-2010, 07:18 PM
Re: 40-180 Voltage High - by rghines1 - 03-31-2010, 04:58 PM
Re: 40-180 Voltage High - by Bruce C - 03-31-2010, 10:32 PM
Re: 40-180 Voltage High - by Bruce C - 04-04-2010, 07:16 PM
Re: 40-180 Voltage High - by rghines1 - 04-05-2010, 08:47 AM
Re: 40-180 Voltage High - by Bruce C - 04-05-2010, 07:34 PM
Re: 40-180 Voltage High - by exray - 04-05-2010, 10:40 PM
Re: 40-180 Voltage High - by Raleigh - 04-05-2010, 10:59 PM
Re: 40-180 Voltage High - by exray - 04-05-2010, 11:26 PM
Re: 40-180 Voltage High - by codefox1 - 04-06-2010, 02:12 PM
Re: 40-180 Voltage High - by Bruce C - 04-06-2010, 05:08 PM
Re: 40-180 Voltage High - by Bruce C - 04-20-2010, 05:47 PM
Re: 40-180 Voltage High - by Bruce C - 04-26-2010, 05:36 PM
Re: 40-180 Voltage High - by Ron Ramirez - 04-26-2010, 05:51 PM
Re: 40-180 Voltage High - by denver - 04-26-2010, 07:28 PM
Re: 40-180 Voltage High - by Bruce C - 04-30-2010, 01:35 PM
Re: 40-180 Voltage High - by exray - 05-01-2010, 02:36 AM
Re: 40-180 Voltage High - by Bruce C - 05-07-2010, 11:03 AM
Re: 40-180 Voltage High - by codefox1 - 05-08-2010, 10:45 AM
Re: 40-180 Voltage High - by Raleigh - 05-12-2010, 02:09 PM
Re: 40-180 Voltage High - by Bruce C - 05-12-2010, 08:06 PM
Re: 40-180 Voltage High - by Bruce C - 05-12-2010, 08:06 PM
Re: 40-180 Voltage High - by Bruce C - 05-12-2010, 08:06 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 60 Squealing
I have taken out the 2nd IF and found a problem or not. I believe the coils are litz wire. There is a very small strand ...dconant — 02:13 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Hi Cap'n Clock, Unfortunately, I do not have this radio.  This is a shame because this should be a good performer.  2A5...MrFixr55 — 06:48 AM
American Bosch Model 802 auto radio
I think it would come under either American Bosch or United American Bosch. American Bosch made sets for the American We...Arran — 05:53 AM
trying to identify this wire type
Thanks to all for the feedback. As Arran said, it is probably an older replacement and yes it has a grid cap so I will ...georgetownjohn — 09:32 PM
trying to identify this wire type
It's possible that the red wire, actually a grid cap lead, is a very old replacement, I can't remember seeing a pre 1939...Arran — 09:18 PM
Gilfillan Brothers Car Radio?
Hi everyone,  Special thanks to Joe Rossi for tracking down this obscure radio and thanks to others who took up the hun...Antipodal — 08:15 PM
trying to identify this wire type
Here's one source for your wire of many. Take care and BE HEALTHY! Gary P.S. Can't get the right color you need? I ...GarySP — 06:40 PM
trying to identify this wire type
...and modern wire of the appropriate gauges and insulation V-rating (300V minimum, usually shown right on the wire) is ...morzh — 05:47 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
I have a question about this radio, is there anyone that has access to this radio that has an intact unmolested speaker ...captainclock1988 — 04:28 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Well what makes me confuse all of those companies is that all three of those companies (Setchell-Carlson, Stromberg-Carl...captainclock1988 — 04:21 PM

[-]
Who's Online
There are currently 7635 online users. [Complete List]
» 1 Member(s) | 7634 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration