Hi,

I found this schematic on the internet
http://farm3.static.flickr.com/2682/4020964908_49fb1cd20a.jpg

I want to drive a 24 VDC motor with a PIC. The manufacturer 
says the motor is a 12vdc to 36 vdc. I measured the stall 
current at ~10 Amps. Anyway I built the cicuit above using 
IRFU5505 for the P Channel Mosfet and a BUZ101S for the N 
channel. Right now I am just using a 5 volt supply thru 
200 ohm resistors to substitute for the pic logic pins and a 
12volt 12 amp battery charger to power the motor. Any way when I
stall the motor using the above circuit it stalls at 4.5 
amps. It seems like I am losing power in the circuit ?  If I 
stall it hooked directly to the battery charger it stalls at 10 
Amps. Any suggestions ? I am going to be driving a pretty heavy
load so I need all the power I can get.

BUZ101S Vds 55V, Vgs 2-4V, Ciss 500pf, Id 22A, Idm 88A,
Rds .05 Ohms
http://www.datasheetcatalog.org/datasheet/siemens/BUZ101S.pdf


IRFU5505 Vds -55 Vgs -2to-4V, Ciss 650pf, Id -18A, Idm -64A, 
Rds .11 Ohms
http://www.datasheetcatalog.org/datasheet/irf/irfr5505.pdf

Thanks, 
Kevin
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