2 results about "Fixed ratio" patented technology

An output circuit comprises first and second transistors, a driving circuit and a current mirror circuit. The driving circuit supplies a relatively small constant current to the base of the first transistor. When a current flows to the collector of the first transistor, a current with a magnitude set at a fixed ratio with respect to the current flows to the collector of the second transistor, and a current proportional to the current flowing to the collector of the second transistor flows to the base of the first transistor by way of the current mirror circuit. That is, a current, which is determined in accordance with a current flowing to the collector of the first transistor, flows to the base of the first transistor.

Several air inputs are typically required in removal of carbon monoxide from a fuel reformate, particularly when using the reformate in a PEM (polymer electrolyte membrane) fuel cell. Control can be greatly simplified by distributing the air or oxygen among the inlets in a fixed ratio using a fixed dimension flow path, such as sized orifices, conduits, and the like, and selecting the total oxygen input to the system based on the operating state of the system and its operating map.