A simple and low-cost method for miniature power transformers´ hysteresis losses evaluation

Our study proposes a method that evaluates the core hysteresis losses for a large variety of miniature power transformers or inductors with minimal resources and computation effort. After the visualization of hysteresis loop, using a basic integrator circuit, the collected data are analyzed using a numerical code developed with a general purpose computation software. Thus, one can better appreciate this important efficiency parameter of such low-power supply devices commonly used in electronic applications.