Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Kirk's Mistery Century.
#9

Morzh, you mentioned that there were 3 wires coming out of the line cord. This certainly seems like a line cord dropping resistor. There are usually 2 copper conductors and a third wire connected to the resistance element, which is resistance wire wound around the 2 copper conductors with asbestos in between. The copper ring you described should be the termination of the resistance wire. Most likely the resistance element is now open, as they did not last long.

With only 24 v of series filaments, you have to drop almost 100 v at .3 amp, so 30 watts of heat have to be dissipated somewhere. If there are no very high wattage resistors in the chassis, then the resistance has to be provided by the line cord. That was the way it was usually done in the early midget sets.

Probably the best way to replace the filament dropping resistance is to use a series cap instead with the proper reactance to drop the 100 V. The bonus is that no heat will be dissipated, rather than the 30 W in the resistance.


Messages In This Thread
Kirk's Mistery Century. - by morzh - 07-06-2014, 06:03 PM
RE: Kirk's Mistery Century. - by Eliot Ness - 07-06-2014, 06:40 PM
RE: Kirk's Mistery Century. - by morzh - 07-06-2014, 07:12 PM
RE: Kirk's Mistery Century. - by Joe Rossi - 07-06-2014, 07:40 PM
RE: Kirk's Mistery Century. - by morzh - 07-06-2014, 07:47 PM
RE: Kirk's Mistery Century. - by Mondial - 07-06-2014, 08:11 PM
RE: Kirk's Mistery Century. - by morzh - 07-06-2014, 08:51 PM
RE: Kirk's Mistery Century. - by morzh - 07-06-2014, 09:08 PM
RE: Kirk's Mistery Century. - by Mondial - 07-06-2014, 09:12 PM
RE: Kirk's Mistery Century. - by morzh - 07-06-2014, 09:42 PM
RE: Kirk's Mistery Century. - by morzh - 07-06-2014, 09:46 PM
RE: Kirk's Mistery Century. - by morzh - 07-06-2014, 10:22 PM
RE: Kirk's Mistery Century. - by Eliot Ness - 07-06-2014, 10:57 PM
RE: Kirk's Mistery Century. - by TA Forbes - 07-06-2014, 11:03 PM
RE: Kirk's Mistery Century. - by Phlogiston - 07-07-2014, 01:31 AM
RE: Kirk's Mistery Century. - by OldRestorer - 07-07-2014, 07:42 AM
RE: Kirk's Mistery Century. - by Eliot Ness - 07-07-2014, 09:02 AM
RE: Kirk's Mistery Century. - by morzh - 07-07-2014, 09:04 AM
RE: Kirk's Mistery Century. - by morzh - 07-07-2014, 10:20 PM
RE: Kirk's Mistery Century. - by OldRestorer - 07-08-2014, 07:34 AM
RE: Kirk's Mistery Century. - by morzh - 07-08-2014, 09:33 AM
RE: Kirk's Mistery Century. - by morzh - 07-08-2014, 09:53 AM
RE: Kirk's Mistery Century. - by Eliot Ness - 07-08-2014, 10:02 AM
RE: Kirk's Mistery Century. - by morzh - 07-08-2014, 10:26 AM
RE: Kirk's Mistery Century. - by morzh - 07-09-2014, 03:13 PM
RE: Kirk's Mistery Century. - by morzh - 07-09-2014, 07:12 PM
RE: Kirk's Mistery Century. - by OldRestorer - 07-10-2014, 08:35 AM
RE: Kirk's Mistery Century. - by morzh - 07-10-2014, 08:58 AM
RE: Kirk's Mistery Century. - by Arran - 07-10-2014, 12:27 PM
RE: Kirk's Mistery Century. - by morzh - 07-10-2014, 02:02 PM
RE: Kirk's Mistery Century. - by morzh - 07-16-2014, 09:14 PM
RE: Kirk's Mistery Century. - by morzh - 07-18-2014, 12:06 AM
RE: Kirk's Mistery Century. - by morzh - 07-18-2014, 10:53 AM
RE: Kirk's Mistery Century. - by OldRestorer - 07-18-2014, 12:47 PM
RE: Kirk's Mistery Century. - by morzh - 07-18-2014, 01:48 PM
RE: Kirk's Mistery Century. - by OldRestorer - 07-18-2014, 03:55 PM
RE: Kirk's Mistery Century. - by morzh - 07-18-2014, 04:08 PM
RE: Kirk's Mistery Century. - by OldRestorer - 07-18-2014, 05:30 PM
RE: Kirk's Mistery Century. - by morzh - 07-18-2014, 06:35 PM
RE: Kirk's Mistery Century. - by sam - 07-19-2014, 06:55 PM
RE: Kirk's Mistery Century. - by morzh - 07-19-2014, 08:39 PM
RE: Kirk's Mistery Century. - by sam - 07-19-2014, 08:47 PM
RE: Kirk's Mistery Century. - by morzh - 07-19-2014, 08:51 PM
RE: Kirk's Mistery Century. - by sam - 07-19-2014, 08:56 PM
RE: Kirk's Mistery Century. - by morzh - 07-19-2014, 08:59 PM
RE: Kirk's Mistery Century. - by sam - 07-19-2014, 09:00 PM
RE: Kirk's Mistery Century. - by morzh - 07-19-2014, 09:20 PM
RE: Kirk's Mistery Century. - by sam - 07-19-2014, 09:28 PM
RE: Kirk's Mistery Century. - by morzh - 07-19-2014, 10:05 PM



Users browsing this thread: 8 Guest(s)
[-]
Recent Posts
trying to identify this wire type
The red wire is rubber covered wire. The others are cotton braid over rubber often in colors or a tracer, also strand...Chas — 02:43 PM
trying to identify this wire type
Greetings Phorum members, Hope you can help me identify this type of wire in the photo I have attached.  I am not sure ...georgetownjohn — 01:53 PM
Philco 60 Squealing
All correct shields must be in place, all tubes correct no subs of any kind. Check any soldered, riveted ground conne...Chas — 01:24 PM
Philco 60 Squealing
I have recapped and replaced out of tolerance resistors and so on. Radio plays nicely on fairly strong stations. The pro...dconant — 10:55 AM
Philco 46-420 Code 121 Reception issues
Welcome Eric, I agree with Bob and far as the two main electrolytic filter capacitors did you change them yourself or w...radiorich — 11:43 PM
Philco 46-420 Code 121 Reception issues
You mentioned the Philco manual and going through the check points...just to be sure we're on the same page here's the m...klondike98 — 08:13 PM
Philco 42-1008 conversion kit
Interesting. I haven't seen that before.klondike98 — 07:02 PM
12' Philco
Yes I had looked for it on the web as well some time back and could not find it. I was glad to see it turned up in Ron'...klondike98 — 06:59 PM
Shadow Meter Bulb
Now if you had a set with a tuning light then the bulb type is important to the circuit, some sets used those prior to t...Arran — 04:58 PM
Shadow Meter Bulb
Ok. Thanks for the correction.RossH — 03:09 PM

[-]
Who's Online
There are currently no members online.

>