What is the span of POE？POE is known as MIDSPAN, which is known as "POE", POE, POE, POE, etc.It can be used between ordinary switch and network terminal equipment to power network terminal

A switching power supply includes a main switching element that is connected to a primary coil of a transformer and switches a main current ON/OFF, and a secondary switching element connected in paral

A surge voltage detection circuit compares a stipulated voltage V with the drain voltage of a switching element, the drain voltage being applied by a smoothing capacitor. The comparison result is supp