A power factor correcting power supply includes an input stage power converter and an output stage power converter. Physiological signals in a patient’s body are sensed and corresponding physiological parameters are derived in a staged approach in order to determine the probability that AMI is occurring in a patient in a first detection stage. The second surface defines defining a bypass flow passage. An insert within the spherical socket is configured to establish a retained interference fit with the opening of the receiver spout when the connection is formed so as to create an acoustic seal therebetween. The object of the present invention is to improve the speed characteristic of an MSM photodetector by using a HEMT structure incorporating a low-temperature grown semiconductor. Alternatively, depending on user selection and cover design, the existing image is stretched anamorphically to accommodate a correctly sized spine.