A method of delivering a prosthetic heart valve to a native aortic valve is disclosed. The control circuit minimizes the potential for human error while also providing a small footprint, minimal DC in-rush current, over current protection, and minimized heat dissipation. A computer system can receive a spot price relating to a market price for exchange of a foreign currency and compare the spot price with the tolerance parameter. A relevance analyzer verifies the word string extracted by the speech recognition portion against the semantic representation extracted by the semantic analyzer so as to determine the syntax structure of the word string. The TPE material layers may be overmolded to thereby increase production speed and efficiency thereby lowering production costs. The other diode is coupled to the second output node and the power supply terminal.