The ratio of controller to total asthma medications can be calculated using 1 or 2 quarters of data; high versus low ratios differentiate patient characteristics. Objective: To investigate differences ...

The Delta II flow-ratio controller measures, divides, and controls user-specified ratios of mixed gas flows to several zones or chambers. It features a 20:1 dynamic ratio control range and faster ...

High bandwidth control of the air-fuel ratio is necessary in order to minimize the exhaust emissions of sparkignition engines with three-way catalytic converters. A new approach is to implement a ...

Linear Technology announces the LTC7820, a high power fixed ratio charge pump DC/DC controller that eliminates the power inductor in a non-isolated intermediate bus converter. It enables up to a 50% ...