Abstract
Abstract: Process control instruments plays decisive role in regulation and monitoring like control actions which requires efficient circuit analysis and different input and output power supplies to make it connectable in panels or used separately. This paper gives a comprehensive study of power supply used in instruments, based on power electronics principle used to improve circuit performance. Furthermore, it also includes analysis for energy conversion, switching devices, control methods, conduction modes and protection mechanism to make the supply efficient. Supply topologies i.e., Linear& Switched Mode Power supply are used as per the requirement of instruments. Both the supplies include different challenges and solutions to overcome losses and make the supply efficient. The analysis includes various parameters like voltage, current, power loss, waveform, efficiency, switching, feed-back and ringing. These parameters affect the whole supply if problem occurs in any of them.
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