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

Threaded Mode
Philco model 70 tone capacitor
Tubesforme
Member
***
Posts: 107
Threads: 20
Joined: Feb 2015
City: Los Angeles, CA
#1

08-08-2016, 10:38 PM
Does anyone know the correct value of the tone capacitor used on the Philco Model 70, before serial #B22,000? The schematic calls out the item as #48. In the parts list all that is listed is Tone control part # 03140.

I know that anything from .01 to .05 would work, but I would like to know the original value, if anyone knows it. I attempted to measure it with my capacitor checker, but it will not settle down and indicate a particular capacity, it varies all over the scale, meaning the capacitor is leaking.

Thank you.
Find
Nathan Slingerland
Super Moderator
******
Posts: 1,874
Threads: 212
Joined: May 2015
City: Seattle State, Province, Country: WA
#2

08-08-2016, 11:33 PM
There's a discussion of the value here:
http://philcoradio.com/phorum/showthread.php?tid=3191

Another great resource is the book 'Philco Condensers and More' by Ray Bintliff - Ron has details on it here: http://philcoradio.com/phorum/showthread.php?tid=14964
Find
morzh
Odobenus rosmarus
*****
Posts: 15,843
Threads: 555
Joined: Oct 2011
City: Jackson, NJ
#3

08-09-2016, 08:03 AM
.015 uf is the value of the 03140 tone control.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
Find
Tubesforme
Member
***
Posts: 107
Threads: 20
Joined: Feb 2015
City: Los Angeles, CA
#4

08-09-2016, 10:38 PM
(08-09-2016, 08:03 AM)morzh Wrote:  .015 uf is the value of the 03140 tone control.

Thank you, that happens to be the value I had thought I would use. Thank you for your confirmation. Tubesforme
Find
« Next Oldest | Next Newest »




Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Philco Model 80 Transformer resistance
Just forget this number, it is useless anyway. Simply proceed with your project.morzh — 10:08 PM
Philco Model 80 Transformer resistance
My $0.02 is that it is a misprint. I tried to look up the value for the similar 84 and 37-84, and ther is no resistance...MrFixr55 — 09:51 PM
Philco Model 80 Transformer resistance
Thanks for the quick reply! Hmm...well that's good, so what am I seeing that's 1042 ohms on the schematic for the pow...Mike L — 08:46 PM
Philco Model 80 Transformer resistance
The DC resistance of the primary is 8 to 9 Ohm.morzh — 07:54 PM
Philco Model 80 Transformer resistance
I have a feeling the primary winding on the power transformer is bad. My resistance reading on the primary side is 9 ohm...Mike L — 07:48 PM
Rusty Tuning Condenser
I would try Naval Jelly and use a soaked pipe cleaner to get it where it needs to go.RossH — 06:56 PM
38-10T chassis Restoration begins
Hello Dconant , they sold mica to use as a insulator between transistors and their heatsinks too. Rob I will remove th...radiorich — 02:52 PM
38-10T chassis Restoration begins
Thanks for the info guys. I always wondered why the use of mica. Now I know.dconant — 01:52 PM
38-10T chassis Restoration begins
Most common plastics have a dielectric constant in the 3-4 range whereas mica is around 6. This means that even if you w...Steve D — 01:46 PM
38-10T chassis Restoration begins
It is acceptable but not desirable. Plastic is not an approved cap dielectric, and even though a reasonably thick piece...morzh — 11:52 AM

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

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