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What do all the tube pins do!

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  • #1

    What do all the tube pins do!

    My title is only mostly joking...

    I have the RCA tube manual and it has fun little pictures like this:

    http://www.tubecad.com/2006/11/04/6P14P%20&%206P15P.png

    I know what some of the abbreviations mean but I don't think they all get explained in the manual.

    So...is there a fun rundown of what pins do what on the common tubes? I'm thinking 12ax7, 6l6, 6v6, el84, el34...stuff like that. Something like "12ax7 - pins 4 and 5 are the heaters" - a nice list. Thanks!
    RJ
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  • #2
    Open your RCA tube manual to page 2. Study the picture and begin reading page 3.
    WARNING! Musical Instrument amplifiers contain lethal voltages and can retain them even when unplugged. Refer service to qualified personnel.
    REMEMBER: Everybody knows that smokin' ain't allowed in school !

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    • #3
      Sounds to me like you need a primer on 'how a vacuum tube operates'.
      The first tube was a diode.
      A plate & a cathode.
      Useful for rectification & switching.
      Then Lee DeForrest added a grid.
      The rest is history.

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      • #4
        The difference between the 6P14P and 6P15P is as follows. The 6P14P connects the Suppressor grid to the cathode internally. The 6P15P brings the Suppressor grid to separate pins and also has some internal shields. Since the Suppressor grid is usually grounded, the shields probably are positioned inside the tube to lower noise or coupling between grid and plate.
        WARNING! Musical Instrument amplifiers contain lethal voltages and can retain them even when unplugged. Refer service to qualified personnel.
        REMEMBER: Everybody knows that smokin' ain't allowed in school !

        Comment

        • #5
          Originally posted by loudthud View Post
          Open your RCA tube manual to page 2. Study the picture and begin reading page 3.
          I see what you did there!
          RJ

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          • #6
            What do all the tube pins do!

            They stop the tube falling out of the socket
            Last edited by Dave H; 06-25-2013, 12:12 AM. Reason: typo

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            • #7
              And did you really see those Russian tubes in an RCA book?
              Education is what you're left with after you have forgotten what you have learned.

              Comment

              • #8
                Originally posted by Enzo View Post
                And did you really see those Russian tubes in an RCA book?
                No, I was just guessing based on how they drew the symbol. Can anybody find an actual data sheet? For a little insite, look for an EF86 data sheet where it explains the shields in that tube.
                WARNING! Musical Instrument amplifiers contain lethal voltages and can retain them even when unplugged. Refer service to qualified personnel.
                REMEMBER: Everybody knows that smokin' ain't allowed in school !

                Comment

                • #9
                  Originally posted by loudthud View Post
                  Can anybody find an actual data sheet?
                  Is this close enough? sv83-sed1997.pdf
                  This link won't work right now: http://www.tubes.ru/techinfo/%20HiFiAudio/6p15pev.html
                  Some more info 3rd post from bottom here: The Amp Garage :: View topic - 6P15P-EB Saratov tubes
                  Originally posted by Enzo
                  I have a sign in my shop that says, "Never think up reasons not to check something."


                  ​

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                  • #10
                    Oh, that wasn't aimed at you, LT. The OP said he was looking in his RCA book and found pictures like... and posted some Russian tubes.
                    Education is what you're left with after you have forgotten what you have learned.

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