For inductors without a magnetic shield, please confirm whether the external magnetism particularly affects the inductor characteristics, or whether the magnetism of the component has any external affects.
Transformers can be divided into two categories based on the operating frequency: high-frequency and low-frequency transformers. The operating frequency of high-frequency transformers is usually over 1kHz, while low-frequency transformers are used in AC circuits with a frequency of about 50-60Hz. Both types of transformers consist of a magnetic core, a frame, and coils, and some may also include materials such as shunts, tape, and sleeves to meet circuit design requirements. However, low-frequency transformers mostly use silicon steel sheet structures for the magnetic core, while high-frequency transformers use ferrite materials. Both high-frequency and low-frequency transformers can be used in boost or buck regulators.
A boost regulator is a circuit used to raise the output voltage of a DC power supply to the desired level. The main function of this circuit is to make the output voltage greater than the input voltage, so it is also called a boost regulator. Conversely, a buck regulator circuit is used to lower the output voltage of a DC power supply to the desired level. The main function of this circuit is to make the output voltage lower than the input voltage, so it is also called a buck regulator.