Darlington pair! Bob Ammerman RAm Systems (contract development of high performance, high function, low-level software) ----- Original Message ----- From: Lynx {Glenn Jones} To: Sent: Tuesday, August 29, 2000 2:31 PM Subject: [EE]: Driving a solenoid > 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 -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu