Abstract: Techniques for routing media streams in a provider network are described. A media routing service is disclosed that comprises one or more virtual media routers for routing media streams from one or more media sources to one or more downstream devices coupled to the provider network. The media routing service provides external entities (e.g., users) of the provider network with the ability to request for a virtual media router for routing media content and determines the appropriate set of computing resources necessary to provision and launch the virtual media router in the provider network. In certain embodiments, the media routing service processes routing commands generated by a client, generates routing information comprising source to destination mappings based on the routing commands, and securely distributes media content to identified downstream devices based on the routing information.

Abstract: A system and method for controlling the voltage output of an alternator is disclosed. The system includes an alternator having a rotor, which has a field winding, a stator having a plurality of phases, a rectifier bridge connected to the plurality of phases, at least one detection circuit connected to each of the plurality of phases, and a controller in communication with the at least one detection circuit and the rectifier bridge. The plurality of phases of the stator are magnetically coupled to the field winding. The rectifier bridge has a plurality of switches for rectifying the alternating current developed in the plurality of stator phases. The at least one detection circuit connected to each of the plurality of phases are used to sense a current reversal in each of the plurality of stator phases. The controller controls the operation of the plurality of switches when the reversal of the current has been sensed by the at least one detection circuit.