Mid-Eastern's new PR Series SCR Pre-Regulated Linear Power Supplies are high reliability sources providing high power, stable output regulation, very low noise, and very low output ripple. They are ideally suited for laboratory applications and in systems where both versatility of operation and a stable output regulation are required. The PR Series units operate as Constant Voltage/Constant Current Power Supplies with automatic crossover. They offer stable DC Power in bench-mount configuration, or as 2U (3.5") to 5U (8.75") High, 19" Full Rack Designs for power ranging from 400W to 3000W, respectively.