Hello all, I need to drive a solenoid. Currently, i have it connected to a NPN transistor as a low side driver. This is all well and good, but the transistor requires aprroxamately 100ma of base current which is of course beyond the capability of the pic pin im using to control the system. Does anyone have any good ideas of how to drive this 100ma base current? i tried using a resistor to pull the base high with 100ma and a smaller NPN transistor to drive it to ground, but this seems like its wasting a lot of current. Thanks in advance, and best regards. Glenn -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu