Table lamps are a type of household appliance used for lighting in people's lives. It is generally divided into two types, one is column type, and the other is clip. It works mainly by concentrating the light in a small area, concentrating light, and facilitating work and study. The bulb used for general desk lamps is incandescent or energy-saving bulbs. Some desk lamps also have an emergency function, which is used for emergency in case of power failure.
he working principle of a switching power supply involves converting the input AC voltage into a DC voltage, then using a switching element (e.g., a MOSFET or IGBT) to switch the DC voltage on and off at a high fre
quency. This switching action generates a high-frequency AC signal, which is then transformed and rectified to produce the desired output DC voltage. The output voltage is regulated through a feedback loop that senses the output voltage and adjusts the switching frequency or duty cycle accordingly.
Applications
Switching power supplies are ubiquitous in modern electronics, powering a wide range of devices including:
Computers and peripherals
Telecommunications equipment
LED lighting systems
Industrial automation systems
Medical devices
Portable electronic devices (e.g., smartphones, tablets, laptops)
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