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

Capacitor on tone control
#3

It looks like what you have in this set is a combination power switch, and tone control switch, the capacitor in question appears to connect between the plate of the 6SQ7 tube and ground, basically it is switched in and out of circuit to cut the trebble. If it is an original part, and not a replacement, I have no explanation as to why a 1600 volt cap would be necessary, the highest potential that cap will see in that position is maybe 80 vdc. If it were a tone control with a potentiometer, and one end of it were connected to near full B+, and the wiper was connected through a cap to ground, then I could see a reason for a 1600 volt cap in that position since if it shorts out or becomes very leaky it can burn up the pot.
Regards
Arran


Messages In This Thread
Capacitor on tone control - by Tucker - 09-07-2018, 07:10 AM
RE: Capacitor on tone control - by morzh - 09-07-2018, 08:12 AM
RE: Capacitor on tone control - by Arran - 09-08-2018, 02:05 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 91 Restore Code ??
Thanks Mike. I at least know why it is there if I don't fully understand it. I see where you talk about a cap and resist...dconant — 04:49 PM
Philco 91 Restore Code ??
Well, this cap you showed cannot possibly, due to the way it is constructed, be 1000pF (0.001). It can be in tens of pF....morzh — 03:13 PM
Philco 91 Restore Code ??
I have two schematics for this radio one shows the 47 block (126-226) and the other (121-221) does not. My radio does no...dconant — 02:32 PM
Philco 91 Restore Code ??
No, that cannot be the 47. The 47 is a regular backelite block cap. Look at the chassis picture, it is shown there. Rig...morzh — 01:45 PM
Philco 91 Restore Code ??
I have changed the title of this thread from Philco 91 Schematic. I have gone through most of the cap replacements. I...dconant — 01:26 PM
462ron
Here is an online transistor substitution site… Ron462ron — 08:44 AM
1930s Stewart-Warner Tombstone Radio need help identifying model number
One way to repair a broken wire on a coil is to take a copper strand out of some 18 gauge electrical cord, make a &quo...captainclock1988 — 12:55 AM
B&K 1077B no video
Hello Tim, I once had a Jcpenny 13inch tv /monitor built by NEC come into my repairshop it would start acting up at tim...radiorich — 10:59 PM
Restoring Philco 96
Mike; The last time I took a potted condenser can apart, and it was maybe 1/4 the size of the one in the model 96, I ...Arran — 10:56 PM
Compatible crts
Bob Andersen — 08:58 PM

[-]
Who's Online
There are currently 2954 online users. [Complete List]
» 3 Member(s) | 2951 Guest(s)
AvatarAvatarAvatar

>