Power supply and sensor
Power supplies in recent times have greatly improved in reliability but, because they have to handle considerably higher voltages and currents than any or most of the circuitry they supply, they are often the most susceptible to failure of any part of an electronic system.
Modern power supplies have also increased greatly in their complexity, and can supply very stable output voltages controlled by feedback systems. Many power supply circuits also contain automatic safety circuits to prevent dangerous over voltage or over current situations.
The power modules on Learn about-electronics therefore introduce many of the techniques used in modern power supplies, the study of which is essential to an understanding of electronic systems.
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