Kepco NTC Power Supply-Programmers are interface devices, designed to be used in conjunction with power supplies whose "common" terminal is the positive output. NTC Power Supply-Programmers provide a convenient way to reverse the polarity of the programming signal, making the power supply's negative output "common" to the signal source. 1-5 NTC Power Supply-Programmers are completely self-contained voltage supplies with built-in d c reference sources, fixed feedback resistor, compensated amplifier and shunt regulator stage. AI! necessary programming terminations are provided on front pane! binding posts as weil as on a rear barrier-strip. 1-6 NTC Power Supply-Programmers are constructed in a "quarter-rack" or "half-rack” configuration, depending on the model number. The main chassis and the wrap-around cover are from cold-rolled steel; the front pane! material is aluminium.