A switching regulator includes a power stage, an output capacitor, a first reference voltage generator, a first virtual ripple generator, a comparator, and a constant-time trigger. Many embodiments provide a method and apparatus for the treatment of diabetes by electrically stimulating L-cells to secrete incretins to stimulate or otherwise modulate the production of insulin. Namely, a peripheral circuit chip and a memory cell array chip are engaged onto an inexpensive assembly base 300 such as glass or plastic. The push to connect fluid coupling assembly receives an end portion of at least one of the supply conduit and the return conduit. One or more retaining members are provided with each of the one or more retaining members coupled to the tension bar at a first end and adapted to engage the retaining member receiver at a second end.