Battery Box Project for 40-81

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

Linear Mode

Arran
Phorum Expert

Posts: 5,653
Threads: 56
Joined: Sep 2008
City: Sandwick, BC, CA

#14

07-28-2026, 10:30 PM

That has at least one of the plans, it's also posted on a website where a guy made one from a double size electrical "device" box like you would use with an oven outlet. The transformer is available through both Mouser, and DigiKey, and likely a few others too. In this case the B+ of the 40-81 is 56 volts, which is sort of an odd value, 22-1/2, 45, 67-1/2, and 90 volts are more typical.
Regards
Arran

Find

« Next Oldest | Next Newest »

Messages In This Thread

Battery Box Project for 40-81 - by MZip - 07-26-2026, 01:46 PM

RE: Battery Box Project for 40-81 - by morzh - 07-26-2026, 04:45 PM

RE: Battery Box Project for 40-81 - by MZip - 07-26-2026, 05:02 PM

RE: Battery Box Project for 40-81 - by radiorich - 07-27-2026, 02:04 AM

RE: Battery Box Project for 40-81 - by MZip - 07-27-2026, 09:27 AM

RE: Battery Box Project for 40-81 - by MrFixr55 - 07-27-2026, 11:33 AM

RE: Battery Box Project for 40-81 - by MZip - 07-27-2026, 12:28 PM

RE: Battery Box Project for 40-81 - by Arran - 07-27-2026, 04:18 PM

RE: Battery Box Project for 40-81 - by MrFixr55 - 07-27-2026, 07:47 PM

RE: Battery Box Project for 40-81 - by MZip - 07-28-2026, 11:16 AM

RE: Battery Box Project for 40-81 - by radiorich - 07-28-2026, 11:29 AM

RE: Battery Box Project for 40-81 - by Arran - 07-28-2026, 01:15 PM

RE: Battery Box Project for 40-81 - by David - 07-28-2026, 02:15 PM

RE: Battery Box Project for 40-81 - by Arran - 07-28-2026, 10:30 PM

RE: Battery Box Project for 40-81 - by radiorich - 07-29-2026, 10:42 AM

RE: Battery Box Project for 40-81 - by MrFixr55 - 07-29-2026, 01:49 PM

RE: Battery Box Project for 40-81 - by Arran - 07-29-2026, 06:40 PM

RE: Battery Box Project for 40-81 - by RodB - 07-29-2026, 08:00 PM

RE: Battery Box Project for 40-81 - by Arran - 07-29-2026, 11:01 PM

RE: Battery Box Project for 40-81 - by radiorich - 07-30-2026, 02:41 AM

RE: Battery Box Project for 40-81 - by MZip - 07-30-2026, 12:31 PM

RE: Battery Box Project for 40-81 - by MrFixr55 - 07-30-2026, 06:11 PM

RE: Battery Box Project for 40-81 - by David - 07-30-2026, 09:16 PM

RE: Battery Box Project for 40-81 - by Arran - 07-31-2026, 01:18 AM

RE: Battery Box Project for 40-81 - by David - 08-01-2026, 09:56 AM

RE: Battery Box Project for 40-81 - by Arran - 08-04-2026, 12:51 PM

RE: Battery Box Project for 40-81 - by MrFixr55 - 08-06-2026, 10:25 PM

RE: Battery Box Project for 40-81 - by David - 08-07-2026, 12:31 PM

RE: Battery Box Project for 40-81 - by MrFixr55 - 08-07-2026, 11:42 PM

RE: Battery Box Project for 40-81 - by DaleHCook - 08-08-2026, 08:09 AM

MZip - by MZip - 08-18-2026, 07:43 PM

RE: Battery Box Project for 40-81 - by DaleHCook - 08-19-2026, 08:16 AM

RE: Battery Box Project for 40-81 - by MrFixr55 - 08-19-2026, 09:12 AM

RE: Battery Box Project for 40-81 - by MZip - 08-19-2026, 12:21 PM

RE: Battery Box Project for 40-81 - by DaleHCook - 08-19-2026, 12:36 PM

RE: Battery Box Project for 40-81 - by radiorich - 08-19-2026, 12:44 PM

RE: Battery Box Project for 40-81 - by radiorich - 08-19-2026, 12:51 PM

View a Printable Version

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 1907 online users. [Complete List]
» 1 Member(s) | 1906 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me