Tube first-timer

Discussion in 'General Electronics Chat' started by Rewind, Mar 19, 2009.

  1. Rewind

    Thread Starter New Member

    Mar 19, 2009
    I am about to build one myself, as a total n00b of course. Just waiting for the package with the ready built pcb board. I thought to myself that I could use normal stick-it-in-the-wall type of adapters, at least for the 6v transformers. The tranformers you looked at were really expensive.

    Best Regards,
    Last edited: Mar 26, 2009
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    When you post into an ongoing thread, it get s confusing to know what reply is to whom. Please don't hijack - start your own thread.

    This is the previous thread -

    You might want to do some reading on vacuum tube theory. Plate voltage is more in the 150 - 250 volt range. Not only are the plate transformers pricey, so are the tubes and their sockets.
  3. bertus


    Apr 5, 2008
  4. Rewind

    Thread Starter New Member

    Mar 19, 2009
    Yes, but the thing is we are both after the same stuff. He wants tranformers for the "$20 Chinese AC 180V-0-180V 2*AC 6V 30W preamp DIY kit", I want transformers for the "$20 Chinese AC 180V-0-180V 2*AC 6V 30W preamp DIY kit". I will continue hijacking until I get some answers.

    I don't really need to know much more about tubes than I already know (nothing). All I need are these silly transformers. Transformers that noone can offer me, for any sum of money. The best advice I have got from a store is to build one myself. Thanks a lot!

    This is what I have to go on: "AC 180V-0-180V 2*AC 6V 30W". I live in Sweden/Norway so I get 230V from the wall (not 115V, as some freaks do).

    Primary: 180V-0-180V (or 190V-0-190V)
    Secondary 1: AC 6.3V 30W
    Secondary 2: AC 6.3V 30W

    I actually found one trafo locally produced in Sweden, the Lundahl transformer, but they only had 250V-0-250V, which is too high. The Lundahl LL1683 had two secondary 6.3V in the same unit AND a great reputation. Too bad...

    Any suggestions, other than wiki-guides?

    I have a suggestion for myself:
    "PT02 - 190-0-190V power transformer
    Dual 120V/240V primaries, 2A heater supply; ideal for preamps and amps up to 7W output."

    BUT. It only has 7W output. I seem to be needing 30W. Next...
    Last edited: Mar 26, 2009