AES type of Battery Eliminator has hum in B+

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

Linear Mode

toptip
Junior Member

Posts: 10
Threads: 0
Joined: Feb 2024
City: NYC State, Province, Country: NY

#14

12-06-2025, 09:22 PM

Having recently read the post attached as a jpg, I got thinking.

There are many car radios in the market with high power outputs, 4 X 50W or more. I presume these use some form of SMPS. I recently bought one (https://www.amazon.com/VDO-Continental-T...B08D2R48HZ, but mine is for the European market with LW, SW and DAB+) and AM on these works just fine, with no interference.

I intend to investigate how it is done. Sadly I have no service manual for it. I am not sure in today’s fast-moving, disposable world manufacturers bother with those or any repair assistance!

Attached Files Image(s)

Find

« Next Oldest | Next Newest »

Messages In This Thread

AES type of Battery Eliminator has hum in B+ - by Bruce B - 03-30-2025, 09:27 PM

RE: AES type of Battery Eliminator has hum in B+ - by morzh - 03-30-2025, 09:31 PM

RE: AES type of Battery Eliminator has hum in B+ - by Bruce B - 03-30-2025, 09:41 PM

RE: AES type of Battery Eliminator has hum in B+ - by morzh - 03-30-2025, 10:24 PM

RE: AES type of Battery Eliminator has hum in B+ - by RodB - 03-30-2025, 10:31 PM

RE: AES type of Battery Eliminator has hum in B+ - by morzh - 03-31-2025, 12:11 AM

RE: AES type of Battery Eliminator has hum in B+ - by Arran - 03-31-2025, 02:21 AM

RE: AES type of Battery Eliminator has hum in B+ - by Bruce B - 03-31-2025, 09:45 AM

RE: AES type of Battery Eliminator has hum in B+ - by RodB - 03-31-2025, 09:57 AM

RE: AES type of Battery Eliminator has hum in B+ - by morzh - 03-31-2025, 10:11 AM

RE: AES type of Battery Eliminator has hum in B+ - by RodB - 03-31-2025, 10:58 AM

RE: AES type of Battery Eliminator has hum in B+ - by David - 03-31-2025, 11:29 AM

RE: AES type of Battery Eliminator has hum in B+ - by David - 03-31-2025, 11:32 AM

SMPS for tube radios - by toptip - 12-06-2025, 09:22 PM

RE: AES type of Battery Eliminator has hum in B+ - by radiorich - 12-06-2025, 10:01 PM

RE: AES type of Battery Eliminator has hum in B+ - by MrFixr55 - 12-12-2025, 01:48 AM

RE: AES type of Battery Eliminator has hum in B+ - by RodB - 12-12-2025, 12:33 PM

RE: AES type of Battery Eliminator has hum in B+ - by MrFixr55 - 12-21-2025, 01:08 AM

RE: AES type of Battery Eliminator has hum in B+ - by morzh - 12-21-2025, 11:03 AM

RE: AES type of Battery Eliminator has hum in B+ - by Paul Philco322 - 12-21-2025, 06:10 PM

RE: AES type of Battery Eliminator has hum in B+ - by morzh - 12-21-2025, 06:28 PM

View a Printable Version

Users browsing this thread: 1 Guest(s)

Recent Posts
Philco 71 Code 125
Ok guys. Thanks for the input. As for AI this is why I ask the experts. Dandconant — 07:39 AM
Philco 71 Code 125
Technically, that's C-. B- is chassis ground. The resistor between chassis ground and the HV center tap makes the HV c...MrFixr55 — 11:24 PM
54C Cabinet Refinish
hello Roy, I’d follow Arran’s suggestion and use automotive gasket material, which I keep around for situations like th...radiorich — 10:22 PM
Philco 71 Code 125
This might be one of those cases where it's a ground to an AC voltage and B- to DC.RodB — 08:22 PM
Philco 71 Code 125
Really Rod? I know you would not steer me wrong but AI say this is a short circuit? What if I moved the 6 volt center ta...dconant — 06:40 PM
54C Cabinet Refinish
Roy; Personally I would have left the asbestos alone if it were my set, but you can find a modern substitute that som...Arran — 04:51 PM
Philco 71 Code 125
Looks like that might be the B- buss, so that would be correct.RodB — 01:32 PM
Philco 71 Code 125
I noticed on the code 121 schematic the center tap for the 6 volt winding and hv winding are tied together. Is this corr...dconant — 12:16 PM
Philco 45-6365 Universal IFT Instruction Manual
The Philco Parts Catalog for 1942 shows it as usable for 175 kHz, 260 kHz, and 465 kHz. The instructions will show how t...DaleHCook — 11:19 AM
Stromberg Carlson 1500 Squeal
Hello Rob, I agree with you—I have one here at my house that I need to check out. It’s way over-engineered just to make...radiorich — 11:05 AM

Who's Online

There are currently 1992 online users. [Complete List]
» 2 Member(s) | 1990 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me