On Tue, Nov 24, 2009 at 8:07 AM, M.L. wrote: >> >> I think opamps are out because of the 48V, but would consider any >> other linear suggestions anyone has, perhaps a modified audio amp >> for example >> >> TIA, wbr > > > You could use an LM3875, I think you could get it to work in > single-supply fashion. It can also handle the current easily. It does > get warm in quiescent conditions. > -- > Martin K. > You could also bootstrap an opamp but I worry about them being stable when rigged like this. -- Martin K. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist