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

Philco 70 Cathedral Speaker
#42

(12-27-2014, 08:30 PM)462ron Wrote:  Hi all, I have a question concerning the method used in winding a coil. Say you start on the left side of a coil form and proceed to the right. Once you get to the right side do you (A)..keep winding the second layer from the side you ended the first layer, the  right side in this example, and move left or do you (B)..end the first layer on the right and then immediately return to the left side and start the second layer and continue moving right again? Sorry if this sounds confusing but I wonder if this affects the inductance at all? Thanks

Ron

Hi;
  No you work your way back and forth across the bobbin, left to right, then right to left, other then the leads which are buried under the wrapping. Field coils, unlike RF and oscillator coils, are not that fussy about how they are wound, as long as the wire gauge is think enough and the coil has enough turns to be close enough in terms of inductance, the object here is to produce a magnetic filed, and block the 120 cycle AC ripple.
Regards
Arran


Messages In This Thread
Philco 70 Cathedral Speaker - by Ron Ramirez - 11-27-2014, 08:07 AM
RE: Philco 70 Cathedral Speaker - by KCMike - 11-27-2014, 10:46 AM
RE: Philco 70 Cathedral Speaker - by morzh - 11-27-2014, 12:50 PM
RE: Philco 70 Cathedral Speaker - by Steve Davis - 11-27-2014, 02:44 PM
RE: Philco 70 Cathedral Speaker - by Ron Ramirez - 11-27-2014, 05:15 PM
RE: Philco 70 Cathedral Speaker - by Arran - 11-28-2014, 01:01 AM
RE: Philco 70 Cathedral Speaker - by morzh - 11-28-2014, 12:37 PM
RE: Philco 70 Cathedral Speaker - by Arran - 11-29-2014, 04:01 AM
RE: Philco 70 Cathedral Speaker - by klondike98 - 11-29-2014, 11:13 AM
RE: Philco 70 Cathedral Speaker - by Ron Ramirez - 11-29-2014, 11:30 AM
RE: Philco 70 Cathedral Speaker - by morzh - 11-29-2014, 11:56 AM
RE: Philco 70 Cathedral Speaker - by Steve Davis - 12-04-2014, 11:11 PM
RE: Philco 70 Cathedral Speaker - by Warren - 12-04-2014, 11:23 PM
RE: Philco 70 Cathedral Speaker - by morzh - 12-04-2014, 11:41 PM
RE: Philco 70 Cathedral Speaker - by Steve Davis - 12-05-2014, 12:01 AM
RE: Philco 70 Cathedral Speaker - by morzh - 12-05-2014, 04:09 PM
RE: Philco 70 Cathedral Speaker - by radiohenry - 12-05-2014, 06:06 PM
RE: Philco 70 Cathedral Speaker - by morzh - 12-05-2014, 06:31 PM
RE: Philco 70 Cathedral Speaker - by radiohenry - 12-05-2014, 07:00 PM
RE: Philco 70 Cathedral Speaker - by KCMike - 12-05-2014, 06:31 PM
RE: Philco 70 Cathedral Speaker - by morzh - 12-05-2014, 07:12 PM
RE: Philco 70 Cathedral Speaker - by Arran - 12-09-2014, 01:24 AM
RE: Philco 70 Cathedral Speaker - by Steve Davis - 12-05-2014, 11:05 PM
RE: Philco 70 Cathedral Speaker - by Arran - 12-09-2014, 01:36 AM
RE: Philco 70 Cathedral Speaker - by morzh - 12-05-2014, 11:28 PM
RE: Philco 70 Cathedral Speaker - by Steve Davis - 12-05-2014, 11:51 PM
RE: Philco 70 Cathedral Speaker - by KCMike - 12-06-2014, 04:41 PM
RE: Philco 70 Cathedral Speaker - by Steve Davis - 12-07-2014, 02:36 AM
RE: Philco 70 Cathedral Speaker - by Steve Davis - 12-08-2014, 09:24 PM
RE: Philco 70 Cathedral Speaker - by morzh - 12-08-2014, 09:30 PM
RE: Philco 70 Cathedral Speaker - by Ron Ramirez - 12-08-2014, 10:01 PM
RE: Philco 70 Cathedral Speaker - by morzh - 12-09-2014, 10:42 AM
RE: Philco 70 Cathedral Speaker - by Steve Davis - 12-09-2014, 12:44 PM
RE: Philco 70 Cathedral Speaker - by morzh - 12-09-2014, 03:30 PM
RE: Philco 70 Cathedral Speaker - by Steve Davis - 12-27-2014, 02:26 AM
RE: Philco 70 Cathedral Speaker - by morzh - 12-27-2014, 01:24 PM
RE: Philco 70 Cathedral Speaker - by Ron Ramirez - 12-27-2014, 07:09 PM
RE: Philco 70 Cathedral Speaker - by 462ron - 12-27-2014, 08:30 PM
RE: Philco 70 Cathedral Speaker - by Arran - 12-28-2014, 10:12 PM
RE: Philco 70 Cathedral Speaker - by Steve Davis - 12-27-2014, 09:18 PM
RE: Philco 70 Cathedral Speaker - by 462ron - 12-27-2014, 10:40 PM
RE: Philco 70 Cathedral Speaker - by Steve Davis - 12-28-2014, 07:48 PM
RE: Philco 70 Cathedral Speaker - by morzh - 12-28-2014, 10:17 PM
RE: Philco 70 Cathedral Speaker - by Arran - 12-28-2014, 11:06 PM
RE: Philco 70 Cathedral Speaker - by Steve Davis - 12-29-2014, 07:49 AM
RE: Philco 70 Cathedral Speaker - by morzh - 12-29-2014, 05:46 PM



Users browsing this thread: 9 Guest(s)
[-]
Recent Posts
1930s Stewart-Warner Tombstone Radio need help identifying model number
Another Update: I found a couple of damaged coils inside this radio that might have something to do with why this radio ...captainclock1988 — 10:51 PM
6TPZ and 5TPO Radio Help
If you are still on 5TPO, you lost me there. What X7? What Points 1 and 2?morzh — 08:37 PM
6TPZ and 5TPO Radio Help
Quick progress report: X7 is broken. Only one leg soldered, the other missing and the diode is cracked. I've replaced...R3Sons — 05:05 PM
6TPZ and 5TPO Radio Help
Oh...and you have electrolytic caps there. All need to go and be replaced.morzh — 04:36 PM
6TPZ and 5TPO Radio Help
Thanks, will do.R3Sons — 01:25 PM
1930s Stewart-Warner Tombstone Radio need help identifying model number
UPDATE: I was able to pick up a signal generator on the cheap (amazingly enough) on feebay and I did an IF alignment fol...captainclock1988 — 09:53 AM
Philco 91 Schematic
Hi Rod, The resistor connects to pin 4 and the ungrounded side of block 9. From pin 9 of the RF tube to one side of ...dconant — 09:34 AM
Just got a 49-1613 need to know...everything!
I just found your post. I have this exact same model, and have had it since 1985 when I was 15 years old! I performed a ...MuzzcoVW — 09:11 AM
B&K 1077B no video
Hello Tim, I would if it's a leaky Capacitor So are all 3 of those B- voltages low then ? Sincerely Richardradiorich — 01:55 AM
B&K 1077B no video
I found a schematic and think I have the problem traced down to the minus power supply. I have very low voltages that go...TV MAN — 12:41 AM

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

>