Radio Corporation of America (RCA). Commercial Electronic Products. Broadcast Television Equipment. Instructions: WP-15A Regulated Power Supply, MI-26087-A/MI-26088-A. Table of Contents: Technical Summary, Equipment, Description, Installation, Connections, Interlock Circuits, Operation, and Maintenance. List of Illustrations: WP-15A Regulator Chassis (front view), WP-15A Rectifier Chassis (front view), Rectifier Chassis (left oblique rear view), Regulator Chassis (right oblique rear view), Voltage Regulator Circuit (simplified schematic diagram), Layout of Rack with WP-15A Regulated Power Supplies only, Modification Diagram Relay Rack Top, Curve, Maximum Permissible Difference between Unregulated and Regulated Voltages, Curve of Regulation of Unregulated Output Voltage for a Typical Unit, Power Consumption of a Typical Unit Showing Input Watts versus Regulated Load Current, Efficiency versus Load Current for a Typical Unit, Capacitor Discharge Time for a Typical Unit, Methods of Interlocking a WP-15A to a +280 Volt Reference Voltage, Schematic Diagrams (Rectifier and Regulator Circuits). List of Tables: Using the MI-21200-C1 Meter, Fuse Replacement, Voltage Measurements to Chassis Ground, Tube Socket Resistance Measurements To Chassis Ground, Transformer and Choke Resistance Measurements.