GSM25AG

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AC DC Converters

A AC DC converter, also known as a power supply, is a device that converts alternating current (AC) from a wall outlet to direct current (DC) used in electronic devices such as computers, cell phones and other consumer electronics. AC DC converters are one of the most important and widely used components of modern electronics, and are essential for a wide variety of applications.

One example of an AC DC converter is the GSM25AG series of power supplies. The GSM25AG is a single-output, high-efficiency off-line power converter designed to operate from an 80 to 265 V AC input voltage range and deliver 25 W of output power. The series is designed to meet all international standards for electrical safety, including the EMC/EMI requirements for ITE and noise immunity.

The GSM25AG power converter has a wide range of applications such as LED lighting, medical equipment, physical access control, CCTV security surveillance, and more. It is an efficient, safe and reliable solution for LED lighting applications with an efficiency up to 90%. It also meets the low leakage current requirements of medical equipment.

Working Principle

The working principle of an AC DC converter is based on the fact that in an electrical circuit, the voltage and current have an inverse relationship. In a normal power line, the voltage will alternately rise and fall, and the current will move through the circuit in a given direction. However, when the voltage passes through the transformer of a power supply, it transfers its energy into a DC voltage.

A transformer\'s job is to reproduce a voltage inversely proportional to the input voltage applied. As the input voltage rises, so does the core, which increases the number of flux lines and the number of turns on the primary coil, creating a higher numerical value in the output voltage. The transformer will also take in the AC current, rectify it and then turn it into DC current which can then be regulated by the power supply’s regulator circuit. This process is called “rectification.” The regulator keeps the output voltage constant, regardless of changes in the load.

The GSM25AG series of AC-DC converters uses a high-power active power factor correction topology, providing a high power factor of > 0.95 and high efficiency of up to 90%. It also uses a variable frequency control scheme with zero-voltage and zero-current switching for a smooth output current with low noise. The GSM25AG series also features short circuit protection, overtemperature protection, overload protection, and auto-recovery of all protection functions.

Conclusion

The GSM25AG series of AC-DC converters is a reliable and efficient solution for a wide variety of applications, be it LED lighting, medical equipment, physical access control, security surveillance, or any other type of consumer electronics. It is a safe, reliable, and efficient way to convert AC into DC electricity, which is essential for any type of modern electronic device.

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