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Top Choices for AC-DC Power Supplies

AC-DC power supplies play a critical role in ensuring the reliability and efficiency of communication systems, whether wireless or wired. By providing stable and clean power to essential equipment, these power supplies contribute to the seamless operation of networks and the delivery of communication services to users worldwide.

AC-DC Power supplies convert power from the mains to stable DC power to operate loads such as motor or electronic devices properly. A power supply can be external such as for laptops and phone chargers, or internal for larger devices such as desktop system units. They can be categorized into two types:

Linear AC/DC Power Supply

In this design, AC voltage is stepped down by a transformer. The reduced AC voltage is then rectified into a direct voltage and further filtered to a more stable output. Due to transformers at the input and low frequencies (e.g. 50Hz), miniaturization of these devices is impossible.

Switching AC/DC Power Supply

These switch power supplies employ high-power MOSFET transistors. Their advantage is the lower heat dissipation. Instead of using a transformer at the input, AC power is rectified and filtered at the input. The DC power produced is fed to a chopper which produces high frequency pulse. This high-frequency wave goes through another rectifier and filter to produce a stable DC.

Due to the amount of noise generated in the system from its design, complex control circuitry composed of integrated components is used to filter out the noise.

Check out below our top picks for AC-DC power supplies for your application: