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Rodeodave Rodeodave is offline

diyAudio Member

About Me

  • About Rodeodave
    Biography
    Quick, like a bunny.
    Location
    in the alps
    Interests
    snow, mountains, amps, ice and rock climbing
    Occupation
    student, somehow
    Country
    Austria
  • Signature
    Gravity - Making the G since 13.7 billion B.C.

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General Information
  • Last Activity: 6th April 2014 08:00 AM
  • Join Date: 26th December 2004

Blog

View Rodeodave's BlogRecent Entries
Latest Blog Entry

Posted 27th January 2011 at 07:06 AM by Rodeodave Comments 0
Posted in Uncategorized
I built the 10R version for now, maybe I'll up the current later. The power resistors I used are non-inductive planar 10R 5w thick film resistors (BI Technologies BPC5100J). The noise figures are comparable with metal film it seems. I just thought I'd give these a try, and since I'm using many fancy flavoured parts (at least for my taste) it fits the bill. I had to remove the original legs, which were some clamp-on soldered types, and fit them with bent copper leads since the original spacing was too small for the board. If you look close enough you can see it in the second picture.




The MOSFETs are IRFP140N/9140N. The 5-LED chain is matched to 9.30V/9.29V (values measured in circuit), using 12VDC and 1k in series with it. The 3-LED chain was matched to 5.59V/5.58V (measured in circuit). The 5-LED chains are fed by 2SK170 that I once measured to...
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