Electronic Devices and Integrated Circuits

16

Regulated Power Supplies

16.1 Introduction

Almost all electronic equipment (communication, instrumentation, control and data processor) and its sub-systems require stabilized dc power supplies of different voltage levels. To cite an example, all PCs require ± 5 V, ±12 V dc supplies. Similarly, analog circuits using operational amplifiers, instrumentation amplifier, analog to digital converter, digital to analog converters, etc. require ±12 V or ±15 V. The industrial control loops work on 24 Vdc. The RADAR units require 10 KV – 15 KV dc power supplies. The power ratings of these dc supplies may vary from a few watts to a few kilowatts. Hence, we must know the requirements of dc power supplies. A dc power supply must meet the following requirements: ...