A micro-optical element is produced through vapor deposition techniques, such as atomic layer deposition. The uninterruptible power supply module comprises an input terminal, a direct-current voltage source, a control module, a control arm-bridge module, an inductive element, a power source selection switch, and a switch element. One of the transistors has a drain connected to one of a pair of bit lines, and the other transistor has a drain connected to the other bit line. The regulator circuit is coupled to charge a capacitance between a first node and a second node of the capacitance circuit with a charge current.