Not all power supplies are created equal. The fundamental technology inside determines size, weight, efficiency, and application suitability. The two main types are low-frequency (line-frequency transformer) and high-frequency (switching converter). Each has distinct strengths — and knowing the difference can save you money, space, and headaches.
Low-frequency power supplies use a line-frequency transformer operating at 50/60 Hz. This design is inherently large and heavy. Efficiency ranges from 70% to 85%, meaning more energy is lost as heat. However, low-frequency units handle surge currents and inrush loads exceptionally well. They are ideal for legacy equipment, high-power motors, and applications where ruggedness matters more than size.
High-frequency power supplies use a switching converter operating at tens of kilohertz. This allows the transformer to be much smaller and lighter. Efficiency jumps to 85%–96%, reducing energy waste and heat generation. These units are perfect for modern precision electronics, compact designs, and applications where space and energy savings are priorities.
The rule is simple: for new product designs, choose high-frequency. It saves energy, reduces size, and meets modern efficiency standards. For legacy equipment maintenance or high-power motor drives, stick with low-frequency. Its surge handling capability and robustness are unmatched in those scenarios.
Unlike suppliers who push only one technology, KRECO manufactures both low-frequency and high-frequency power supplies. We evaluate your application requirements — load characteristics, space constraints, efficiency targets, and budget — and recommend the optimal solution. No bias, just the right fit for your specific needs.
Whether you are upgrading to modern electronics or maintaining legacy systems, KRECO has the right power supply for you. New gear high, old gear low — let us help you make the right choice.
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