{507} INRUSH / Input Surge Current Measurement Using DSO Digital Storage Oscilloscope
in this video i demonstrated how #INRUSH / #Surge Current #Measurement Using DSO Digital Storage Oscilloscope
the inrush current or input surge current or switch-on surge is the maxima instantaneous input current drawn by an electrical device / component or group of components when first turned on. AC electric motors and transformers may draw several times their normal full-load current when first energized, for a few cycles of the input waveform. switch mode power supply SMPS / inverter ac boards, inverter welding machines and converters also have inrush currents much higher than their steady-state currents, due to the charging current of the input capacitance.
while selection of over-current-protection devices such as fuses and circuit breakers is made more complicated when high inrush currents must be tolerated. The over-current protection must react quickly to overload or short-circuit faults but must not interrupt the circuit when the (usually harmless) inrush current flows. What Is Inrush Current. measuring inrush current using oscilloscope in smps or welding machine. it can be monitored
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