The difference between the input and output (load) voltages is dropped across the transistor and this excess power i.e. But the frequently used series pass elements are BJT or MOSFET in active or Linear Mode and is connected in series with the load.ĭepending on the changes in either input or load, the current through the transistor changes in order to keep the output constant. The basic example of a series pass element is a resistor. Linear Regulated Power Supply is a type of power supply that regulates the output voltage with the help of a series pass control element. There are basically two categories of Power Supplies: Linear Regulated Power Supply and Switching Mode Power Supply (SMPS). A power supply will take an unregulated power and converts it into a stable regulated power. Almost all electronic devices require a constant voltage without any fluctuations. Buck Converter or Step – down ConverterĪ Power Supply Unit is an important part of an electric circuit as it provides the power to the circuit for a proper operation.
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