A Switch-mode Power Supply (SMPS) is used to convert electrical power efficiently from one form to another. The main purpose of a switch-mode power supply is to provide a stable DC output voltage from an AC or DC input source. It achieves this by rapidly switching electronic components on and off at high frequency, which reduces energy loss and heat generation. Compared to traditional linear power supplies, an SMPS is smaller, lighter, and more efficient, making it ideal for modern industrial and electronic applications.
In simple terms, a switch-mode power supply maintains steady power even when the input voltage fluctuates. This ensures sensitive equipment runs smoothly and safely. Because of its high efficiency and compact design, SMPS is widely used in automation systems, control panels, computers, and communication devices, where consistent and reliable power is necessary for continuous performance and energy savings.