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Technical Articles
Browse selection guides, application notes and practical power supply articles. This layout follows the previous WordPress blog structure while preparing space for the larger article library.
Understand how fast switching edges, parasitic coupling, transformer capacitance, PCB loops, cables, and enclosure details create conducted and radiated EMI—and how to diagnose the dominant path before choosing a fix.
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An AC/DC module and a DC/DC module may deliver the same 24 VDC output, yet they solve different problems. The AC/DC unit must connect safely to the mains, survive line disturbances, control inrush current, meet conducted-emissions limits, and maintain adequate insulation. A DC/DC unit starts with an existing DC source and is normally chosen to change the voltage, stabilize a rail, create an isolated domain, or place regulation close to the load.
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A field reference for topology selection, component design, PCB layout, loop stability, EMC, and failure analysis
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The wrong 24 VDC power supply rarely fails at a convenient time. It may reset a PLC when a contactor closes, overheat in a crowded cabinet, or pass a bench test and then misbehave beside a variable-frequency drive.
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A DC-DC converter rarely fails because its nominal input voltage was misunderstood. More often, damage happens at the edges of the operating envelope.
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A power supply can regulate perfectly on the bench and still fail certification. The cause is often not the control loop. It is a narrow isolation gap under a transformer, an uncertified substitute in the BOM, a plastic part used below its recognized thickness, or a fault condition that leaves one component hot enough to ignite nearby material.
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