[sdiy] LT1228 Lm13600 crap

Ian Fritz ijfritz at earthlink.net
Mon May 23 22:46:52 CEST 2005


At 02:34 PM 5/23/05, René Schmitz wrote:

>I haven't done the maths for it, however I think its not that simple. The 
>question is how the current distributes into Q3 and D1.
>Here Early effect and of course Rbe could play into the distribution.
>
>Its also not an exact third mirror leg. They did "tap" current out of the 
>"primitive mirror" Q1 and D1. But this means debalancing the wilson 
>arrangement arround Q1, Q2 and D1. Its difficult to grasp this 
>mathematically, because one doesn't really know the relative geometries.

Rene --

Yeah, all that, plus we apparently can't be sure the schematic is accurate 
or complete.  Blah!

   Ian 





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