> I did NOT write the first post, but since you're conducting a bare-light-bulb
> interrogation, I must now confess that I've run motors with op-amps!  A quad
> package provides two low-current H-bridge equivalents.  8^)

How much current is feasible from a quad op-amp?  Is high-voltage (24v) low-
current easier than lower-voltage (5v) higher current?