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|    rec.audio.tubes    |    Tube-based amplifiers... that go to 11    |    52,877 messages    |
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|    Message 51,138 of 52,877    |
|    Ian Bell to Ian Iveson    |
|    Re: SE Headphones Amp    |
|    02 Oct 10 11:03:10    |
      From: ruffrecords@yahoo.com              Ian Iveson wrote:       >>>> One thing I was wondering was if I use a transformer       >>>> with       >>>> a nominal 16 ohm secondary but use it with 32 ohm       >>>> headphones for example, then ra reflected into the       >>>> secondary would be so low relative to the load that the       >>>> output could be considered essentially a voltage source.       >>>> Equally the load reflected to the plate would be four       >>>> times higher so distortion would be lower?       >>>>       >       > Language. Lower load = higher resistance.       >       > If you follow my logic, my point is clear. The load       > presented by the primary of a transformer comprises:       >       > 1. Primary winding resistance       > 2. Leakage inductance in series with 1       > 3. Reflected secondary winding resistance in series with 1       > and 2       > 4. Reflected secondary load in series with 1, 2 and 3       > 5. Primary inductance in shunt with 3 and 4       >       > Think.       >              Nope, maybe I am just thick. You said "10H is in shunt with load. Lower load       makes shunt more       significant."              Now you are saying "Language. Lower load = higher resistance."              Which means "Higher resistance makes shunt more significant"              That means to drive a higher resistance load I need MORE inductance in the       primary.              Does not make sense to me.              Cheers              Ian              > Ian       >       >              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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