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Discussion in 'Electronic Design' started by John Larkin, Mar 28, 2006.

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  1. John  Larkin

    John Larkin Guest


    That's awesome too. $120 in small quantity.

    John
     
  2. Jim Thompson

    Jim Thompson Guest

    Not for some of us ;-)

    ...Jim Thompson
     
  3. Roy L. Fuchs

    Roy L. Fuchs Guest

  4. Roy L. Fuchs

    Roy L. Fuchs Guest

    The price depends on the volume bought.
     
  5. John  Larkin

    John Larkin Guest

    120 volts. 90 watts. 25 amps. 8 mhos. 200 C. All I need to know now
    are the capacitances.

    I want to use it in a wideband amp, 1-250 MHz maybe. It's input
    matched for 3.5 GHz, so I figure the matching will be invisible at 250
    MHz, practically DC. At 2.5 Ghz it should be partially matched, but
    probably tunable. The drain is unmatched, fine with me.

    As soon as I blow one up, I'll open the can and see what's inside.


    John
     
  6. Bob

    Bob Guest

  7. If the junction was not the most temperature sensitive part of the
    assembly.
     
  8. Roy L. Fuchs

    Roy L. Fuchs Guest

    Well, they have no devices yet from what I was told. Maybe in a
    year or so.
     
  9. Those things really leak a lot- several watts could be lost to leakage
    in the 'off' condition.
    Might make a nice audiophile class-A amplifier.

    Best regards,
    Spehro Pefhany
     
  10. Roy L. Fuchs

    Roy L. Fuchs Guest

    Actually, that RF centric device would be quite expensive to
    incorporate into an audio amp, regardless of whether it would work or
    not. There a far far cheaper devices that are as good as they need to
    be for such a design.
     
  11. Seems kind of open-ended. Surely if these guys can hear a staggering
    difference between cheap and expensive AC line sockets, response well
    into the hundreds of MHz may not be overkill.


    Best regards,
    Spehro Pefhany
     
  12. Ken Smith

    Ken Smith Guest

    Make that "phase linearity" any you'll sell more.
     
  13. Ken Smith

    Ken Smith Guest

  14. Roy L. Fuchs

    Roy L. Fuchs Guest

    I was talking about price, not working capacity.
    Gold cans likely are though.
     
  15. John Larkin

    John Larkin Guest

    The rep dropped off an eval board here, with a gadget on it. He claims
    we can get parts, but these exotic semiconductors do always seem to be
    six months off. They've added a "P" in the front of the part number,
    on the pdf datasheet, and he claims that means "production." We'll
    see.

    When/if we can get them, they will be a pretty radical change to the
    way people design wideband RF power amps.

    John
     
  16. John Larkin

    John Larkin Guest


    Like the old germanium transistor amps with just a cap into the
    base... self biasing! But a few watts of leakage won't be lethal for a
    200 watt class AB push-pull amp, probably less than the normal
    quiescent power.

    John
     
  17. John Larkin

    John Larkin Guest

    Still cheaper than a 300B.

    John
     
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