Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

7B5 Loctal Tube
#1

Hopefully this is not a stupid question, but I have a chassis with a few of these 7B5 tubes and one of them has a 2 pins that appear to be missing, are they all supposed to be on this tube?
#2

David, Pins 4 & 5 are not used on this tube:
http://www.nj7p.org/Common/Tube/SQL/Tube...p?Type=7b5

Carl
Northern Panhandle, WV




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
HiFi (Chifi) tube amp build - but my own design.
Mike, Tim; you are about to enter the twilight zone. Doo doo doo doo, doo doo doo doo This is something alright. I'm go...RodB — 06:26 PM
HiFi (Chifi) tube amp build - but my own design.
:lol: We need to start a singing radio group! I play the guitar, so maybe get a few vocals? Anyways, Mike, I did try mou...TV MAN — 05:56 PM
HiFi (Chifi) tube amp build - but my own design.
And so does a barber shop quartet. mmmmmmRodB — 03:54 PM
Shadow Meter Bulb
I did try an LED bulb in place of the original but wasn't impressed with the amount of light on the dial. Seems like it ...RodB — 03:51 PM
HiFi (Chifi) tube amp build - but my own design.
Tim Would mounting he transformer vertically change the hum, if used without additional parts? Also, in these amps...morzh — 02:25 PM
Shadow Meter Bulb
Gary I doubt it would introduce any noise. We use similar lamps for the panel indication, 12V AC lamps: they are LEDs...morzh — 02:15 PM
Shadow Meter Bulb
Not sure if anyone has tried this but there are 6.3 volt miniature lamps in bayonet and screw-in base options available ...GarySP — 11:31 AM
Shadow Meter Bulb
Any 6.3 volt pilot light will work. I would use the brightest one I could find in my workroom. Be sure the dial is clean...RodB — 10:45 AM
HiFi (Chifi) tube amp build - but my own design.
Tim, nice write up and thanks for sharing !! Sincerely Richardradiorich — 02:47 AM
HiFi (Chifi) tube amp build - but my own design.
Well, this was a real "Hum-Dinger" :lol: ! This will be kinda long, but hopefully it will help others having t...TV MAN — 01:55 AM

[-]
Who's Online
There are currently 6925 online users. [Complete List]
» 1 Member(s) | 6924 Guest(s)
Avatar

>