A drive circuit produces a drive signal for a pump having a piezoelectric actuator, with the piezoelectric actuator forming a part of the drive circuit and serving to shape a waveform of the drive signal. The material is preferably a piezoelectric material. In the formation method, a base layer and particles placed thereon are subjected to an etching process. The same operations may be performed for each value of the key present in either of the XML data sets. At least one diamond cutter insert, polyamide button, or tungsten carbide block can be installed circumferentially and spaced apart symmetrically or near-symmetrically on at least one of the end rings.