The large size of electromagnetic field induction is related to coil diameter, number of turns, enameled wire diameter, winding density, etc. Capacitance is a characteristic of the coil itself and has nothing to do with the magnitude of the current.
Installing proper shielding for low frequency transformer can effectively suppress interference and improve electromagnetic compatibility of the system.
The current in the inductor cannot be abruptly changed, because the essence of the role of the chip inductor in the circuit is to convert the changing current flow process into an electromotive force that hinders the current change.
Here we mainly for the material of the winding frame, the raw material of the low-frequency transformer wire frame is generally plastic, but there are many kinds of plastic: commonly used Nylon, PBT, PET, etc..
The basic parameters of the inductor are inductance, quality factor, inherent capacitance, stability, the amount of current passing through and the frequency of use.
Low-frequency transformers are used to transmit signal voltage and signal power, and can also achieve impedance matching between circuits, and have an isolation effect on DIRECT current.