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

David Bogen Tuner and Amps
#16

It looks like antique electric supply might have suitable twist lock cans for the multi section electrolytic. That would be a labour saver, as they are 20 uF, 20 uF, 10 uF, 10 uF, serving all the decoupling duties for the preamp and other audio stages prior to the output section. The main HT is at 610 v, which Bogen handled with two 30 uF cans in series. They are mounted on phenolic insulator spacers, and have carboard covers, since at least one of them is floating at 300V! These, I'll probably stuff, since close replacements including the insulation won't be so easy to find. The high HT explains the very respectable 35W continuous power output from smaller O/P valves.

I don't hold with furniture that talks.
#17

A lot of things got in the way... but I have finally ordered and received caps. Unhappy with the offerings for (not quite) drop-in twist-locks, I have decided to roll up my sleeves, roll up the can edges and restuff Icon_smile

I don't hold with furniture that talks.
#18

Hello Ed,
Sounds like a plan then you can use the capacitors of your choice what I used 95 % of the time is Nichicon Capacitors.

Sincerely Richard
#19

Rich - That's what I figured... I was able to select carefully for size, Temp and ESR ratings etc. I believe most of the selection was from Nichicon. I trust this brand also.

I don't hold with furniture that talks.
#20

Hello Ed,
yes, I have been using nichicon capacitors since the 1980s Along with sprague and United chemical and there are few other.

Sincerely Rich




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
The list of my radio & TV collection!
Thank you very much, Arran. This is extremely useful information for me.RadioSvit — 07:54 AM
The list of my radio & TV collection!
Peter; I found an old thread on the ARF, I was wrong about when Rogers took over DeForest Crosley, it looks like it wa...Arran — 06:15 AM
The list of my radio & TV collection!
Thank you Arran, this is very interesting information. With your permission, I will definitely use it when I make a vide...RadioSvit — 04:14 AM
The list of my radio & TV collection!
Peter; For a start your DeForest Crosley 6D632 was a 1936-37 model, and I believe it had six tubes, and 3 wave bands,...Arran — 03:07 AM
AES type of Battery Eliminator has hum in B+
This is interesting, they actually designed the B+ side with some form of voltage regulation, I think? Most of the B+ su...Arran — 02:21 AM
AES type of Battery Eliminator has hum in B+
They are trying to use a regulator. Essentially it is an LDO schematic. LDOs are supposed to greatly reduce ripple, so t...morzh — 12:11 AM
AES type of Battery Eliminator has hum in B+
So, I just built a 90 volt 40ma battery eliminator for a farm radio and had to use 1000 mfd for the input filter cap to ...RodB — 10:31 PM
AES type of Battery Eliminator has hum in B+
Caps of 1,000 uF 250V are about $7 in Mouser. C1 could be increased. A NTC inrush limiter could be employed to limit t...morzh — 10:24 PM
AES type of Battery Eliminator has hum in B+
Bruce B — 09:41 PM
AES type of Battery Eliminator has hum in B+
Bruce Could you post the schematic if this power supply?morzh — 09:31 PM

[-]
Who's Online
There are currently 1035 online users. [Complete List]
» 3 Member(s) | 1032 Guest(s)
AvatarAvatarAvatar

>