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What is the use of switch mode power supply?
A switch mode power supply is a power converter that utilises switching devices such as MOSFETs that continuously turn on and off at high frequency; and energy storage devices such as the capacitors and inductors to supply power during the non-conduction state of the switching device.
Which answer from the following list is a disadvantages of switched mode power supply?
Which answer from the following list is a disadvantage of switched mode power supplies compared with series regulated supplies? a) Switched mode supplies are less suitable for high power applications. b) Switched mode supplies are more expensive to implement than series regulated supplies.
Why is switch mode power supply ( SMPS ) important?
Even though the design of Switch Mode Power Supply (SMPS) is more complex than a Linear Regulated Power Supply, its high efficiency, high power capabilities and stability are the main factors in choosing SMPS as the power supply unit for sensitive electronic devices. What is the purpose of SMPS?
How is a switching mode power supply different from a linear regulator?
The switching regulator is again a transistor (like a power MOSFET) just like in Linear Regulator but the difference is that the pass transistor in SMPS doesn’t continuously stay in saturation or fully ON state but rather switches between fully ON and fully OFF states at a very high frequency. Hence the name Switching Mode Power Supply.
Why are switched mode power supply more susceptible to RF interference?
Since there is a High Frequency AC Signal in the SMPS, there is a chance of high frequency harmonics and as a result, SMPS is more susceptible to RF Interference. We have seen the basic design of a Switched Mode Power Supply (SMPS) in the above section.
How is the output voltage of a switch controlled?
The output voltage can be higher (Boost or Step – up) or lower (Buck or Step – down) and can be controlled by the duty cycle of the high frequency square wave (that is applied to the switch). One main drawback of Non – isolated Topology is that the efficiency of the switches falls as the duty cycle is reduced.