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
Chassis ground
elfiself
Member
***
Posts: 58
Threads: 9
Joined: Apr 2016
City: Albany,NY
#1

03-28-2017, 04:48 PM
Working on a 42-PT-7. I have some basic questions. Is the chassis connected to power supply common and if so where? I believe it may have been at the riveted connection at one end of the filament resistor. In general, once the common is connected to chassis it becomes the only ground with no other isolated grounds so why do some schematics indicate two different grounds? Is B- always line neutral? how is chassis ground achieved if not connected to line neutral? Is it a matter of being at a lower potential ? And finally, is B+ power supply line in or rectifier DC out or both?
TIA elfiself


Attached Files
.pdf M0013568.pdf Size: 122.74 KB  Downloads: 206
Find
« Next Oldest | Next Newest »


Messages In This Thread
Chassis ground - by elfiself - 03-28-2017, 04:48 PM
RE: Chassis ground - by morzh - 03-28-2017, 05:21 PM
RE: Chassis ground - by elfiself - 03-28-2017, 07:36 PM
RE: Chassis ground - by morzh - 03-28-2017, 10:38 PM
RE: Chassis ground - by elfiself - 03-29-2017, 07:39 PM
RE: Chassis ground - by morzh - 03-29-2017, 09:59 PM
RE: Chassis ground - by Arran - 03-29-2017, 10:10 PM
RE: Chassis ground - by elfiself - 03-31-2017, 12:52 AM
RE: Chassis ground - by Arran - 03-31-2017, 04:02 AM
RE: Chassis ground - by elfiself - 04-01-2017, 05:26 PM
RE: Chassis ground - by morzh - 04-01-2017, 06:43 PM
RE: Chassis ground - by elfiself - 04-01-2017, 07:22 PM
RE: Chassis ground - by morzh - 04-01-2017, 07:40 PM
RE: Chassis ground - by elfiself - 01-09-2018, 12:40 PM
RE: Chassis ground - by Arran - 01-10-2018, 01:20 AM
RE: Chassis ground - by elfiself - 01-10-2018, 11:28 AM
RE: Chassis ground - by elfiself - 02-09-2018, 06:25 PM
RE: Chassis ground - by Radioroslyn - 02-09-2018, 08:39 PM
RE: Chassis ground - by jcassity - 02-11-2018, 12:53 PM



Users browsing this thread: 5 Guest(s)
[-]
Recent Posts
Hickok AC51 tube tester
Note that no power cord, power switch, or power transformer switch are shown. That (along with my experience with full s...DaleHCook — 07:09 AM
IF can wire size and Rubber mounts?
A pair of wire strippers can give you an idea of what the existing gauge of the wire leads are in the IF can, I think it...Arran — 06:07 AM
My last cabinet for this year
Hello Dan, That is really beautiful what great looking radio you have ! I have friends who live in Calgary and the wea...radiorich — 01:51 AM
Philco Predicta Siesta picture over time getting dimmer
I found that the wire insulation was burt  The fly back needs corona dope! Why would someone put that ...Platinumblonde36 — 01:09 AM
Philco Predicta Siesta picture over time getting dimmer
This is what it looked like beforePlatinumblonde36 — 01:01 AM
Philco Predicta Siesta picture over time getting dimmer
Platinumblonde36 — 12:58 AM
Philco Predicta Siesta picture over time getting dimmer
Platinumblonde36 — 12:57 AM
Philco Predicta Siesta picture over time getting dimmer
I'm finding some strange things in my set and for the most part it's also original, so I need to start going over everyt...Platinumblonde36 — 12:55 AM
12' Philco
Not anymore Mike. Andre The Giant Born: May 19, 1946, Coulommiers, France Died: Jan 28, 1993 (46 years), Paris, Fran...RodB — 11:53 PM
IF can wire size and Rubber mounts?
Renovated Radios do carry what you need. As for the voltage, a wire should be at least 300V-rated.morzh — 11:13 PM

[-]
Who's Online
There are currently 4620 online users. [Complete List]
» 1 Member(s) | 4619 Guest(s)
Avatar

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