1. You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
    Dismiss Notice
Dismiss Notice
This forum does not allow a single user to have more than one username. If anyone wants to change their username contact an admin and it will be done. Multiple accounts belonging to the same member will be deleted without warning.

Rooster-Made 3-500z Project

Discussion in 'Home Brew' started by paws264, Dec 14, 2009.

  1. paws264

    paws264 Active Member

    Joined:
    Apr 6, 2005
    Messages:
    647
    Likes Received:
    5
    A young friend of mine (dare I say my understudy) has take on a tube amplifier project, this is his first tube amplifier project.

    He has decided to build a single 3-500z Desktop amplifier with a B+ supply located outboard in another case.

    He does his own work according to his plans and, I check his work and offer suggestions.



    DAY ONE

    [​IMG]

    .
     
    #1 paws264, Dec 14, 2009
    Last edited: Dec 14, 2009

  2. paws264

    paws264 Active Member

    Joined:
    Apr 6, 2005
    Messages:
    647
    Likes Received:
    5
    [​IMG]

    .
     
    #2 paws264, Dec 14, 2009
    Last edited: Dec 14, 2009
  3. paws264

    paws264 Active Member

    Joined:
    Apr 6, 2005
    Messages:
    647
    Likes Received:
    5
    [​IMG]

    .
     
  4. paws264

    paws264 Active Member

    Joined:
    Apr 6, 2005
    Messages:
    647
    Likes Received:
    5
    [​IMG]

    .
     
  5. paws264

    paws264 Active Member

    Joined:
    Apr 6, 2005
    Messages:
    647
    Likes Received:
    5
    [​IMG]

    .
     
  6. paws264

    paws264 Active Member

    Joined:
    Apr 6, 2005
    Messages:
    647
    Likes Received:
    5
    [​IMG]

    .
     
  7. HiDef

    HiDef Active Member

    Joined:
    Aug 16, 2008
    Messages:
    543
    Likes Received:
    9
    Nice job so far.

    What do you have in mind for air?

    Got a safety choke?

    Hows about a thermistor current limiter on the primary of the fil xfmr?

    This might inspire certain others to get their stuff done. I'm one myself in the pile of parts stage.
     
  8. paws264

    paws264 Active Member

    Joined:
    Apr 6, 2005
    Messages:
    647
    Likes Received:
    5
    I'm waiting for him to chime in and answer your questions.

    .
     
  9. paws264

    paws264 Active Member

    Joined:
    Apr 6, 2005
    Messages:
    647
    Likes Received:
    5
    This is a view from the bottom with his choke mounted at the junction of the output coax and Antenna Load tuner.

    [​IMG]

    The Antenna X-fer relay is not installed yet.

    .
     
    #9 paws264, Dec 15, 2009
    Last edited: Dec 15, 2009
  10. paws264

    paws264 Active Member

    Joined:
    Apr 6, 2005
    Messages:
    647
    Likes Received:
    5
    Close up showing Tune and Load gangs elevated from metal surface of RF Deck.

    [​IMG]

    .
     
  11. paws264

    paws264 Active Member

    Joined:
    Apr 6, 2005
    Messages:
    647
    Likes Received:
    5
    Side View showing the new clearance of the Tuners.

    [​IMG]

    .
     
  12. rockinredsrooster

    Joined:
    Apr 24, 2005
    Messages:
    18
    Likes Received:
    0
    Amp as of 12-16

    Amp as of 12-16, I've made some more progress but the wife is getting tired of my crap being in the kitchen. I'm buying a couple blank 19' rack panels for the amp & HV supply. I have to build another rigid frame for the HV transformer. Once finished, I have a small 4 post rack I'll modify to height & enclose the amp & supply.
    I'd appreciate any comments or reccomendations.
    Rooster.
     

    Attached Files:

  13. linearone

    linearone King of NY

    Joined:
    Apr 2, 2005
    Messages:
    615
    Likes Received:
    8
    What are the plans and specs for the HV supply? Whats the bias scheme?
     
  14. W5LZ

    W5LZ Crotchety Old Bastard

    Joined:
    Apr 8, 2005
    Messages:
    6,832
    Likes Received:
    808
    Chimney and forces air cooling.
    - 'Doc
     
  15. Bionic Chicken

    Bionic Chicken Active Member

    Joined:
    Jun 6, 2008
    Messages:
    391
    Likes Received:
    27
    Wouldn't you need an air socket to get the full benefit of forced air cooling?
     

Share This Page

  • About Us

    The WorldwideDX Radio Forum was originally established in 2001. We pride ourselves on welcoming Radio Hobby enthusiasts of all types, while offering unbiased, informative, and friendly discussion among the members. We are working every day to make sure our community is the best Radio Hobbyist's site.
  • Like us on Facebook

  • Premium VIP Member

    The management works very hard to make sure the community is running the best software, best designs, and all the other bells and whistles. Care to buy us a beer? We'd really appreciate it!

    Donate to us!