1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Other Radios (Non-Philco)
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Threaded Mode
Silvertone 45 chassis
KCMike
Phorum Expert
*****
Posts: 1,475
Threads: 69
Joined: Nov 2012
City: Kansas city, MO.
#76

02-22-2015, 06:00 PM
Nice work. Looking foward to fire up.
Find
Eliot Ness
Phorum Expert
*****
Posts: 3,135
Threads: 54
Joined: Apr 2011
City: Lexington, KY
#77

02-22-2015, 09:05 PM
(02-22-2015, 06:00 PM)Mike Wrote:  Nice work. Looking foward to fire up.

+1   Icon_thumbup
John KK4ZLF
Lexington, KY
"illegitimis non carborundum"
Find
morzh
Odobenus rosmarus
*****
Posts: 15,823
Threads: 554
Joined: Oct 2011
City: Jackson, NJ
#78

02-22-2015, 09:11 PM
Oh....yeah, that speaker again Icon_lol
I guess, a Philco 39-7 speaker to the rescue all over again.
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.
(This post was last modified: 02-22-2015, 09:11 PM by morzh.)
Find
OldRestorer
Electronic geneus
*****
Posts: 4,109
Threads: 310
Joined: Nov 2013
City: Kings Park NY
#79

02-23-2015, 10:49 AM
Please dont say Fire when Mike is working on one of my helpless radios, Icon_lol

A+ Mike

Oh and I may have cut off a bunch of wire that was hanging off the chassis but I don't think it will affect anything right. Icon_mrgreen

Kirk
Times I have been electrocuted in 2021
As of 1/01/2021
AC: 4 DC: 1
Last year: 6
Find
morzh
Odobenus rosmarus
*****
Posts: 15,823
Threads: 554
Joined: Oct 2011
City: Jackson, NJ
#80

02-23-2015, 11:08 AM
Any more confessions? Icon_twisted Icon_twisted Icon_lol
Did you forget the rule "don't cut off what's hanging, you might regret it!" ? Icon_lol
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
morzh
Odobenus rosmarus
*****
Posts: 15,823
Threads: 554
Joined: Oct 2011
City: Jackson, NJ
#81

02-26-2015, 11:06 PM
   
   
   
   
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
sam
Phorum Expert
*****
Posts: 2,572
Threads: 337
Joined: Jun 2013
City: lawrenceville nj
#82

02-27-2015, 01:44 AM
Mike 
Looking good  Icon_clap
Some day, and that day may never come, I will call upon you to do a service for me. But until that day, accept this justice as a gift
mafiamen2
Find
OldRestorer
Electronic geneus
*****
Posts: 4,109
Threads: 310
Joined: Nov 2013
City: Kings Park NY
#83

02-27-2015, 09:00 AM
Looks good Mike but just a thought. In the picture below there seems to me much more wire on the small bobbin. 
Maybe I really did remove wire?  Icon_e_surprised Icon_thumbdown


Attached Files Image(s)
   
Times I have been electrocuted in 2021
As of 1/01/2021
AC: 4 DC: 1
Last year: 6
Find
morzh
Odobenus rosmarus
*****
Posts: 15,823
Threads: 554
Joined: Oct 2011
City: Jackson, NJ
#84

02-27-2015, 11:42 AM
If you did it is no good. Why didn't you put this photo out before?
Do you have other photos of this coil?
Any other wires removed?


Wll, I will dismantle it and try to count turns on the photo.
For the future, the length of the wire left is the key, so do not touch it.
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.
(This post was last modified: 02-27-2015, 11:47 AM by morzh.)
Find
OldRestorer
Electronic geneus
*****
Posts: 4,109
Threads: 310
Joined: Nov 2013
City: Kings Park NY
#85

02-27-2015, 01:17 PM
I don't think I would ever do that but I will look for photos when I get home.
I know I thought about it so I just wanted to say it as a far off maybe.

Hope I didn't screw this up Icon_rolleyes

Kirk
Times I have been electrocuted in 2021
As of 1/01/2021
AC: 4 DC: 1
Last year: 6
Find
morzh
Odobenus rosmarus
*****
Posts: 15,823
Threads: 554
Joined: Oct 2011
City: Jackson, NJ
#86

02-27-2015, 03:01 PM
Well...imagine you came to a doctor with a majorpain in your behind. But because you feel uncomfy to tlk about it, the doc did something else, and you left the office with the same pain in your behind but without your tonsills and a prescription for estrogen ingections and a free box of Tic-Tacs. Icon_lol

You give me a pretty chewed up chassis that also has no sch, might as well tell me everything you know, every little bit helps.
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
morzh
Odobenus rosmarus
*****
Posts: 15,823
Threads: 554
Joined: Oct 2011
City: Jackson, NJ
#87

02-27-2015, 09:14 PM
OK. Disconnected the coil, wound 30 turns (this is what I was able to count on the photo).
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
OldRestorer
Electronic geneus
*****
Posts: 4,109
Threads: 310
Joined: Nov 2013
City: Kings Park NY
#88

02-28-2015, 10:39 AM
Major pain in the behind? is that a metaphor for me Icon_rolleyes

At least I will have nice boobs doc Icon_mrgreen

Sorry Mike, I cant believe I didn't think of that and I cant believe I cut it... !!

If it doesnt work this time just call it done.
You have done enough work on it... Icon_cry

Kirk
Times I have been electrocuted in 2021
As of 1/01/2021
AC: 4 DC: 1
Last year: 6
Find
morzh
Odobenus rosmarus
*****
Posts: 15,823
Threads: 554
Joined: Oct 2011
City: Jackson, NJ
#89

02-28-2015, 02:03 PM
Well,

I suspect if it works, the coil will still need adjstment.

Thing is, the coil in question is a part of the first tuning resonant tank. So the inductance of it is important.

Now, the formula for cylidrical coil involves:

1. Square of the number of turns (so it is the most important) and this is what we are guessing.
2. Length of the winding. This we also do not know.
3. Crossection area of the bobbin. This we know.

So, first order of approximation is, I think, OK, but then it will need some adjustment.
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
morzh
Odobenus rosmarus
*****
Posts: 15,823
Threads: 554
Joined: Oct 2011
City: Jackson, NJ
#90

03-01-2015, 06:09 PM
Some radio....

While resoldering electrolytics (wires cracked so I actually just put one right where the wires came from, and other needed a shorter single wire) I could not understand one wire coming to the solder post which came from dial lamps.
Obviously it was connected to the negative (xfmr centertap.)

http://www.nostalgiaair.org/PagesByModel...010931.pdf

But.
This sch shows a sepatate winding for that.
I think they rely on negative bias developed across the field coil and the divider to light th lamps!

Wow....

Well, I rewound the coil, put 33 turns and will try to see (if it comes to life) how the signal resonates.



PS. Kirk, dost thou have the speaker AND canst thou measure thy speaker's field coil resistance?
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.
(This post was last modified: 03-01-2015, 06:11 PM by morzh.)
Find
« Next Oldest | Next Newest »




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 60 Squealing
Wondering if I did it backwards. If a coil was wound backwards, the oscillator would not work at all. Old school...Chas — 07:23 PM
Philco 38-7 Speaker
4-ohm speaker. Black, Green leads.tludka — 07:00 PM
Philco 42-390, code 121 speaker
#87 on the schematic.  This radio had a 8" Zenith  speaker attached to it when I got it. I do don't know the hist...Stevelog — 06:39 PM
Philco 60 Squealing
I'm pretty sure I now have the litz wire soldered. This did not make any difference. Back in April I rewound the seconda...dconant — 06:25 PM
Philco 38-7 Speaker
Just to make sure, you chose either 4 ohm into 5K or into 10K? (blk-org or blk-grn)morzh — 06:23 PM
Philco 38-7 Speaker
I have let this one sit because of other duties. Now I am back, and I have a couple of questions. I hooked up a Hammond ...tludka — 05:34 PM
Philco 42-390, code 121 speaker
>>A closer examination of the very small print schematic indicates that the speaker is a PM type. This shows a ...morzh — 05:18 PM
Philco 60 Squealing
Litz is typically tinned by simply rubbing it with the soldering iron tip while immersed in solder (and a bit of rosin f...morzh — 05:14 PM
Philco 6K7
The suppressor grid (if by G3 you mean the S) is usually at the Cathode potential, which in this caes is GND. I am not ...morzh — 05:10 PM
Philco 16B Parts
Thanks for the reply. Unfortunately the radio was removed before bidding was over so I didn't get a chance to bid.dconant — 04:10 PM

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

>
  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Other Radios (Non-Philco)