Klystron Power Supply Nvis 102 , is a state-of-the-art solidstate, regulated Power Supply for operating low power Klystrons. Nvis 102, Klystron Power Supply is an ideal platform to enhance education, training, skills & development amongs our young minds. Product Features Regulated Beam Supply and Repeller Supply voltages. LED Digital meter for Beam voltage, current and Repeller voltage. Compact and Reliable. Modular construction for easy maintenance. In addition to AM and FM modulation of beam current, a provision for external modulation is provided.