[Lowfer] LW-MAX final amp components...

[Bill Ashlock]

Mike R,

>My LW-MAX has a BD-135 and a BD-137 in the final circuit. =20
> There is a lowpass filter on the output that uses two 100uh
>chokes in what looks like a T type filter.

This is a change in my thinking on the output stage! There are the normal=
 output NPN/PNP transistors. But then the troublesome un-tuned filter sho=
ws up which I have proven (at least on my bench and also in P-spice simul=
ations), just doesn't work! This because the high-Q loop load and lack of=
 any loading at the resonant freq of the filter (IE: it takes off and rin=
gs like crazy). Have you seen this effect on your new scope?

Thanks for looking into this!

BillGet more from the Web.  FREE MSN Explorer download : http://explorer.=
msn.com


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