Hello everyone,

it must have been an about 4 or 5 years since I backed out of the 
piclist and the world of PICs. Now, a few weeks before Xmas I decided to 
do a new PIC project again.

I have a rather simple question, however, some extensive search on the 
web and www.piclist.com did not delivered enough information for me. I 
plan to drive a few lightbulbs (12V) by a PIC and to minimize a loss of 
energy this should be done with a logic level mosfet. The IRLZ 34N seems 
a good chice for me (Ron=35mOhms, rather cheap and _available_ at my 
local dealer). Now: How to attach this device to a PIC port. An approach 
like this sould do the work:


                             bulb
                              |
------                       D
RBx  |--------------*-----G
------              |        S
                     Z        |
                 10k Z        |
                     Z        |
                     |        |
                     |        |
                    GND      GND


I am not very familliar with this sort of device (In fact I am only 
hobbyist) something is very confusing to me: In some schematics the 
authors use some low-valued resistors directly befre the gate. I assume 
this is to protect the driving device from some high current pulses when 
the gate has to be charged. Would it be necessary for the PIC as well like


                                    bulb
                                     |
------                   100Ohms    D
RBx  |--------------*----|/\/\|--G
------              |               S
                     Z               |
                 10k Z               |
                     Z               |
                     |               |
                     |               |
                    GND             GND

Any hints or web-pointers iwth similar schematics are welcome. If you 
think this generates too much noise over the list, please email me 
privately.


Best Regards
Markus
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