A rain guard assembly for providing shelter to an occupant entering or exiting a vehicle is described. A shaft is rotatably disposed in the body and has an exterior end extending through the body. A setting combination providing more optimal patient physiologic performance is programmed for future delivery of therapy. , a rectifier circuit, is operative to selectively couple an input node thereof to the first and second voltage busses. The third circuit phase shifts a carrier signal by a second angle according to the region. The radiation-sensitivity of the first layer serves to reduce critical dimension variance of the pattern.