Philippe <p.techer@IDLS.IZARBEL.TM.FR> wrote

     >Best is today BUK9508-55 Rds_ON= 0.008. Diificult to obtain.
     >Near is Motorola MTP75N03HDL Rds_ON=0.0075 at VGs = 10V,
     >There is also International Rectifier, check their URL.
     >Don't forget
     >you will need a doubler/tripler to obtain the correct Vgs. There is
     >also some thermal loss due to the reverse diode included into the
     >package.

     You could use a MAX 232 as an driver if your switching speed is not
     to fast.

     TTL input to PIC  and RS 232 Output to Gate of Fet

     Regards

     Klaus Leiss