Thaum cov transformation ratios txawv thiab khiav hauv thaum uas tig mus, ib tug circulating tam sim no yuav generated, uas yuav cuam tshuam cov zis ntawm lub transformer. Yog tias qhov feem pua ​​impedance tsis sib xws thiab kev ua haujlwm sib luag yuav tsis tuaj yeem faib cov khoom thauj hauv kev faib ua feem rau lub peev xwm ntawm transformer, nws tseem yuav cuam tshuam rau cov zis ntawm lub transformer. Thaum cov kab hluav taws xob tsis zoo ib yam thiab khiav mus rau qhov sib npaug, lub transformer yuav luv luv.