December 2013

  1. Switched-mode power supply

    Switched-mode power supply
    A switched-mode power supply (switching power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight. Continue reading →
  2. RSP-100 Series - 100W Meanwell Switching Power Supply with Low profile

    RSP-100 Series - 100W Meanwell Switching Power Supply with Low profile
    After the launch of RSP-750, RSP-500, RSP-320, RSP-200, RSP-150 and RSP-75 series, Mean Well further extended its lower to middle wattage models by introducing the RSP-100 series, the 100W AC/DC low profile single output enclosed type switching power supply with PFC function. Compared to the preceding models of SP-100 series, RSP-100 series has a lower profile, reducing the size by 33%, also with an increase the efficiency by 8%. The working temperature of -30~+70℃ also superior to the -10~+60℃ of SP-100. Featuring with high efficiency, free air convection cooling, and 1U low profile (30mm), RSP-100 series are especially suitable for end users who are looking for economical power supplies with energy-saving, noise free, and low profile installation features. Continue reading →

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