Many electronics designers occasionally have doubts about how to design a switching power supply. With suitable ICs now available for nearly every purpose, along with online design aids and simulators from semiconductor device manufacturers, you might think this is no longer a major issue. But inductive components can still be difficult due to their complexity. Fortunately, inductive component specialist Würth Elektronik eiSos has developed a new online tool called REDEXPERT which simplifies designing with inductive components.