A comparative study of two different types of post regulators is carried out in this paper. First one is low drop out post regulator (LDO) and second one is DC-DC step down LTM 4601 HV post regulator. These post regulators regulate the auxiliary high power output of the multi-output fly back dc-dc converter, designed for providing supply for the telemetry tracking transmitter subsystem of the satellite. The requirements for space applications are taken into consideration while designing.

In this paper, G-semiopen sets are used to define a weak separation axiom and to study some of their basic properties.

The aim of this paper is to introduce and characterize a new class of functions called almost G-semicontinuous functions in grill topological spaces by using G-semiopen sets.