Research in remote signal transmission electronics. Report II

Research has been directed toward the evaluation of semiconductor circuits suitable for operation at temperatures of 230/sup 0/C. These circuits are to be utilized in monitoring neutron flux for initial fuel loading in a breeder reactor. Two new amplifier circuits were developed and tested, as well as new concepts for a high current driver circuit and a temperature-stable discriminator-multivibrator circuit. An improved dc-dc converter circuit was constructed and evaluated at 230/sup 0/C. Initial data were obtained on radiation effects on discrete devices, integrated circuits, resistors, and capacitors, for possible use in fuel reloading requirements.