POWER SUPPLIES FOR THERMAL CONDUCTIVITY DETECTOR OF A GAS CHROMATOGRAPH

Abstract

Three types of power supplies for a Thermal Conductivity Detector (TCD) in a Gas Chromatograph have been fabricated using integrated circuits. These power supplies have been tried in low and high ohms TCD bridges. One of the power supply has been installed in a commercial gas chromatograph and it gave satisfactory results for low ohms bridge.