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


Philco 41-221C chassis restoration
#7

Morzh;
The differential needs to be at least 15v. So I'm running it at 90. Voltage here is between 120 and 125. So at minimum 120 my differential is 30v. So it could go as low 115v and work. At 120v with a 30 volt differential and at 100ma dissapation would be 3 watts, so dissipation is somewhat less in this radio. If you didn't see it in the video description here is a link to the complete article. Though the chart does not show resistance value for 90v output it was easy to figure out.
https://w4npn.org/wp-content/uploads/202...-Choke.pdf

Ron S.


Messages In This Thread
RE: Philco 41-221C chassis restoration - by morzh - 05-01-2026, 08:49 AM
RE: Philco 41-221C chassis restoration - by morzh - 05-01-2026, 09:58 PM
RE: Philco 41-221C chassis restoration - by electricroo - 05-01-2026, 10:43 PM
RE: Philco 41-221C chassis restoration - by morzh - 05-02-2026, 09:54 AM
RE: Philco 41-221C chassis restoration - by morzh - 05-02-2026, 02:56 PM
RE: Philco 41-221C chassis restoration - by morzh - 05-04-2026, 10:20 AM
RE: Philco 41-221C chassis restoration - by morzh - 05-05-2026, 01:41 PM
RE: Philco 41-221C chassis restoration - by morzh - 05-06-2026, 10:06 AM
RE: Philco 41-221C chassis restoration - by morzh - 05-07-2026, 10:26 AM
RE: Philco 41-221C chassis restoration - by morzh - 05-07-2026, 01:32 PM
RE: Philco 41-221C chassis restoration - by Arran - 05-07-2026, 02:32 PM
RE: Philco 41-221C chassis restoration - by morzh - 05-09-2026, 09:48 PM
RE: Philco 41-221C chassis restoration - by morzh - 05-10-2026, 10:09 AM
RE: Philco 41-221C chassis restoration - by morzh - 05-10-2026, 12:22 PM
RE: Philco 41-221C chassis restoration - by morzh - 05-10-2026, 01:14 PM
RE: Philco 41-221C chassis restoration - by morzh - 05-10-2026, 06:36 PM
RE: Philco 41-221C chassis restoration - by morzh - 05-31-2026, 02:34 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 1946 online users. [Complete List]
» 1 Member(s) | 1945 Guest(s)
Avatar

>