Product introduction: The function of shielding inductors is to protect wires, loops and coils from external magnetic fields, and to weaken the interference of electromagnetic fields generated by circuits on other components. Magnetic shielding or electromagnetic shielding methods are usually used. Produce
The function of shielding inductors is to protect conductors, loops and coils from external magnetic fields, and to weaken the interference of electromagnetic fields generated by circuits on other components.
In the circuit, the shielding inductance mainly plays the functions of filtering, oscillation, delay, and notch. It also has the functions of filtering signals, filtering noise, stabilizing current, and suppressing electromagnetic interference. The common function of the inductance in the circuit is to form an LC filter circuit with the capacitor. Capacitors have the characteristics of "connecting DC and connecting AC", and inductors have the function of "connecting DC and AC". If the direct current with more interference signals passes through the LC filter circuit, the AC interference signal will be consumed by the inductor and become heat energy; when the DC current passes through the inductor to become more pure, the AC interference signal will also be converted into magnetic induction and heat energy, and the high frequency will easily be impedance by the inductor , Thereby suppressing high-frequency interference signals.
The shielded inductor of the present invention has the characteristics of preventing the passage of alternating current and allowing smooth passage of direct current. The higher the frequency, the greater the coil impedance. Therefore, the main function of the inductor is to isolate and filter AC signals, or to form a resonant circuit with capacitors and resistors.
The characteristics of shielded power inductors are opposite to those of capacitors. It can prevent the passage of alternating current and make the direct current pass smoothly. When a DC signal passes through the coil, the resistance is the resistance of the wire itself, and the voltage drop is small. When an AC signal passes through the coil, self-induced electromotive force will be generated at both ends of the coil. The direction of the self-induced electromotive force is opposite to the direction of the applied voltage, which hinders the passage of AC. Therefore, the characteristics of the inductor are DC and resistance AC. The higher the frequency, the greater the coil impedance. Inductors usually work with capacitors in circuits to form LC filters, LC oscillators, and so on. In addition, people also use the characteristics of inductance, such as resistance coils, transformers, and relays.