The size of the magnetic beads (more accurately, the characteristic curve of the beads) depends on the frequency of the interference waves the beads need to absorb. Magnetic beads resist high frequencies, inductance, and have low resistance to DC, while high resistance to high frequencies. Since the units of magnetic beads are named according to the impedance they produce at a certain frequency, and the unit of impedance is also ohms. The datasheet of magnetic beads usually includes a graph showing the frequency and impedance characteristics. Typically, 100MHz is the standard, for example, 2012B601 indicates that the impedance of the magnetic bead is 600 ohms at 100MHz.


Inductive coils possess a characteristic similar to inertia in mechanics, known in electrical terms as "self-induction." Typically, sparks occur at the moment the switch is opened or closed. What is an integrated molding inductor, and this self-induction phenomenon is caused by the generation of a high induced electromotive force. In summary, when an inductive coil is connected to an AC power source, the magnetic field lines within the coil constantly change with the alternating current, leading to electromagnetic induction. This electromotive force generated due to the change in the coil's own current is referred to as "self-induced electromotive force." It is evident that inductance is a parameter related to the number of turns, size, shape, and medium of the coil, serving as a measure of its inertia and is unrelated to the applied current.


2: The role of inductors: Colored loop inductors have tuning and frequency selection functions. When connected in parallel with electrolytic capacitors, they form an LC tuning circuit. At resonance, the inductive reactance and capacitive reactance of the circuit are equal in magnitude and opposite in phase. For one-piece molding inductor manufacturers, if the inherent oscillation frequency f0 of the circuit is equal to the frequency f of the non-AC signal, then the inductive reactance and capacitive reactance of the loop will also be equal. The usage of colored loop inductors is generally not very high, and they are usually considered quite stable in the circuit. Inductance, also known as self-inductance coefficient, is a physical quantity that indicates the self-inductive ability of an inductor.


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