def METHOD_NAME(self):
    # Shield the cap, but have at least a stage effort of 4
    input_size = max(1, int(self.predriver_size / self.stage_effort))
    self.inv = factory.create(module_type="pinv",
                              size=input_size,
                              height=self.row_height)
    self.inv1 = factory.create(module_type="pinv",
                               size=self.predriver_size,
                               height=self.row_height)
    self.inv2 = factory.create(module_type="pinv",
                               size=self.size,
                               height=self.row_height)