Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

Philco 90 1-47 Triode
#36

Mike


No damage. Humbucking coil counters hum induced by the fact that the magnetic field is produce by the electric coil (field) and not a Perm magnet. It simply has a few turns in the opposite direction to the VC, but is not a part of moving system. So it will compensate for the hum part of the field.



Ron

And I stand self-corrected: the polarity is not important because the two lugs are the end off VC/HBC curcuit, and whether it is one or the otehr direction, the HBC is always in opposite to the VC. So it does not matter how it is connected to the secondary of the OT.
If, and onlu if the HBC is separate and connected in series with VC explicitly (could be unsoldered and then re-soldered) - only then it is important to watch that polarity.

The HBC should always be in opposite to the VC.

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.


Messages In This Thread
Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 05:02 PM
RE: Philco 90 1-47 Triode - by morzh - 06-25-2023, 07:10 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 07:18 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 08:28 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 06-25-2023, 08:43 PM
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-25-2023, 09:06 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 09:07 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 09:11 PM
RE: Philco 90 1-47 Triode - by morzh - 06-25-2023, 09:31 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 09:33 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 06-25-2023, 09:45 PM
RE: Philco 90 1-47 Triode - by DaleHCook - 06-25-2023, 09:50 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 06-25-2023, 09:59 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 10:04 PM
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-25-2023, 10:12 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 10:18 PM
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-25-2023, 10:22 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 10:25 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 06-26-2023, 08:31 AM
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-26-2023, 11:32 AM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-26-2023, 03:15 PM
RE: Philco 90 1-47 Triode - by morzh - 06-26-2023, 06:46 PM
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-26-2023, 07:23 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-26-2023, 08:28 PM
RE: Philco 90 1-47 Triode - by GarySP - 06-26-2023, 08:59 PM
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-26-2023, 09:16 PM
RE: Philco 90 1-47 Triode - by RodB - 06-26-2023, 11:08 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 06-27-2023, 07:26 AM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 08:35 AM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 10:18 AM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 10:51 AM
RE: Philco 90 1-47 Triode - by morzh - 06-27-2023, 11:02 AM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 11:05 AM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 11:06 AM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 11:30 AM
RE: Philco 90 1-47 Triode - by morzh - 06-27-2023, 11:34 AM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 11:42 AM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 11:44 AM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 11:54 AM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 12:03 PM
RE: Philco 90 1-47 Triode - by morzh - 06-27-2023, 12:10 PM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 01:07 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 01:11 PM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 01:22 PM
RE: Philco 90 1-47 Triode - by morzh - 06-27-2023, 01:23 PM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 01:27 PM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 01:34 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 01:34 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 01:37 PM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 01:39 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 01:53 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 06-27-2023, 02:07 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 02:13 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 06-27-2023, 02:42 PM
RE: Philco 90 1-47 Triode - by morzh - 06-27-2023, 02:43 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 08:10 PM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-28-2023, 07:07 AM
RE: Philco 90 1-47 Triode - by morzh - 06-28-2023, 10:33 AM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-28-2023, 10:44 AM
RE: Philco 90 1-47 Triode - by morzh - 06-28-2023, 12:55 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-28-2023, 05:12 PM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-29-2023, 08:24 AM
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-29-2023, 06:02 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 12-21-2023, 11:40 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 12-22-2023, 12:34 AM
RE: Philco 90 1-47 Triode - by RodB - 12-22-2023, 10:50 AM
RE: Philco 90 1-47 Triode - by GarySP - 12-22-2023, 11:04 AM
RE: Philco 90 1-47 Triode - by Mike_RF - 12-22-2023, 11:08 AM
RE: Philco 90 1-47 Triode - by Mike_RF - 12-22-2023, 11:10 AM
RE: Philco 90 1-47 Triode - by morzh - 12-22-2023, 11:28 AM
RE: Philco 90 1-47 Triode - by Radioroslyn - 12-22-2023, 01:31 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 12-22-2023, 01:55 PM
RE: Philco 90 1-47 Triode - by RodB - 12-22-2023, 07:20 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 12-24-2023, 06:35 PM
RE: Philco 90 1-47 Triode - by RodB - 12-24-2023, 09:56 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 12-24-2023, 11:32 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
under chassis parts locator diagram for 1938 Zenith 9s262
Has anyone gone to the trouble of creating an under chassis parts locator image?  Yes, I can identify components by foll...bobloney — 08:57 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Try looking at this site the book mark is for a old generator that I was given. David    https://radionerds.com/index.ph...David — 08:36 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Hello Everyone, I am looking for voltage identification for all the pin positions on the socket of a CRV-20130 power su...Tonym4704 — 08:16 PM
Philco P45-6365 Universal Transformer Instruction Manual
Can anyone guide me to where this may be found?GRG — 03:00 PM
54C Complete Teardown/Rebuild
I don't think that I have encountered a 12Z3 before, curious how it uses one of those but includes a #43, which is a 25 ...Arran — 02:17 PM
HiFi (Chifi) tube amp build - but my own design.
It's the other forum. I'm also in DIY, but mostly read there. Honestly, I kinda jumped into this without much thought to...TV MAN — 10:43 AM
Philco 71 Code 125
Hello,  I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM
54C Complete Teardown/Rebuild
Hello Roy, here is this one sincerely Richardradiorich — 12:45 AM
54C Complete Teardown/Rebuild
Richard, Had grabbed it already but thank you just the same.  I find myself wanting to find some way to block out the...glyphmon — 12:03 AM

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

>