Low-frequency محولs are used to propagate signal voltage and signal power, and are also used to achieve impedance matching between circuits, with isolation function.
In general, low-frequency محولs refer to "power frequency محولs"تستخدم لتغيير الجهد أقل من (50 هرتز) ، ويكون قلب الحديد عمومًا عبارة عن لوح من الصلب السليكوني ذو موصلية مغناطيسية عالية.
High-frequency محولs refer to محولs that operate at high frequencies as energy changes. Due to the high frequency of the magnetic field, the silicon steel sheet will produce eddy currents (the conversion speed of the small magnet in the silicon steel sheet cannot keep up), so the high-frequency محول generally uses "high-frequency ferrite" as the magnetic core.
There is no difference in principle between high-frequency محولs and low-frequency محولs, but due to the different frequencies of high-frequency and low-frequency, the iron core used for محولs is also different.