铁基非晶磁环的高频响应和ns级脉冲响应特性

为了获取高频和快脉冲条件下铁基非晶磁芯的重要特性参数,对三种国产铁基非晶磁环的高频响应和快脉冲响应特性进行了实验研究.通过1∶1变压器测试回路发现,在1～20 MHz等振幅正弦源信号作用下,磁芯响应信号幅度损失率从0陡增至50％～60％,当源信号频率继续增大时,响应信号幅度损失率维持在50％～60％.对磁芯快前沿脉冲响...

High-frequency response and ns-range pulse response of iron-based amorphous cores

In order to get important characteristic parameters of three kinds of domestic amorphous cores under the conditions of high frequency and fast pulses, frequency response and fast-pulse response of these cores are analyzed in detail in this paper. In the test circuit of a 1∶1 transformer, attenuation ratio of the response voltage increased from 0 to 50%~60% when the frequency of the sinusoidal source voltage increased from 1 MHz to 20 MHz. According to theoretical analysis, high-frequency eddy loss caused this voltage attenuation. Fast-pulse response of amorphous cores were also studied, and experimental results showed that these cores responded inferiorly to the amplitude and flat top of the square pulse when the pulse width was less than 30 ns. However, response signal and source signal