Switching DC power supplies were first introduced in the late 1970’s, today they are the most popular form of DC power supplies in the market due to their exceptional power efficiency and great overall performance. A Switching DC power supply (also known as switch mode power supply) regulates the output voltage through a process called pulse width modulation (PWM). The PWM process generates some high frequency noise, but enables the switching power supplies to be built with very high power efficiency and small form factor. With a good design, a switching power supply can have excellent load and line regulation. Typical applications for switching DC power supplies include:

 

  • general purpose use including R&D, manufacturing and testing
  • high power / high current applications
  • communications systems, mobile stations, network equipments, etc.
  • electroplating, anodizing, electroforming, electrophoresis, etc.
  • Battery charging and equalization for Lithium Ion batteries, aviation, marine and vehicle batteries
  • electrolysis, waste treatment, hydrogen generator, fuel cell applications, etc. 
  • DC motors, slot cars, aviation and marine applications, etc.