>Hi,Thanks everybody.I did not imagine that audio problem is also
>involved. I have to checkthis out.Rgdsramana

   Audio it's not a problem. PWM frequency either !
   At 100mA and 13V you may filter the PWM and
use a nice and fine DC level. The greateast frequency is
the smaller capacitor you need. Simple.
   Vasile
****************************************
Surducan Vasile
email:vasile@l30.itim-cj.ro
URL:http://www.geocities.com/vsurducan
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