Connection and difference between inductance and magnetic beads

Inductance is an energy storage component, while magnetic beads are an energy conversion (consumption) device.
Inductance is mostly used in power supply filtering loop, magnetic beads are mostly used in signal loop, and EMC Countermeasure
Magnetic Beads are mainly used to suppress electromagnetic radiation interference, while inductance is used to suppress conductive interference. Both can be used to handle EMC and EMI problems.
Magnetic Beads are used to absorb ultra-high frequency signals, such as RF circuits, PLL, oscillating circuits, and ultra-high frequency memory circuits (DDR ).
SDRAM, Rambus, etc.) All need to be added to the power input part, and the inductance is a storage component used in LC oscillator circuit, medium and low frequency filter circuit, etc, the application frequency rarely exceeds the error 50 MHz.
Generally, inductance is used for the connection of the ground, and inductance is used for the connection of the power supply, while magnetic beads are used for the signal line?
But should the magnetic beads be able to absorb high-frequency interference? In addition, after high-frequency resonance, the inductance can no longer be used ......
Please also express your understanding
First, we must understand two ways of EMI: radiation and conduction. Different Ways adopt different suppression methods. The former uses magnetic beads, and the latter uses inductance.
For the I/O part of the wrench, is it possible to isolate the I/o part and the wrench location with an inductance Based on EMC, for example, how to isolate the USB location and the wrench location with a 10 h inductance to prevent the plugging noise from interfering with the ground plane?
Inductance is generally used for circuit matching and signal quality control. Use magnetic beads where it is simulated and digitally combined.
Use magnetic beads where it is simulated and digitally combined. The size of the magnetic beads between the digit and the simulated ground
Size of the magnetic beads (specifically, it should be the characteristic curve of the magnetic beads)
Depends on the frequency of the dry Disturbance Wave to be absorbed by the magnetic beads.
Why is the unit and resistance of the magnetic beads the same ?? All are Ohm !!
Magnetic Beads are high frequency blocking. Do you understand low DC resistance and high frequency resistance,
For example, 1000r @ 100mhz indicates that the signal at a frequency of 1000 m has a resistance of ohm.
Because the unit of the magnetic beads is nominal according to the impedance produced at a certain frequency, the unit of impedance is also ohm. The Datasheet of magnetic beads is usually accompanied by a characteristic curve of frequency and impedance. Generally, 100mhz is used as the standard. For example, 2012b601 indicates that the impedance of the magnetic beads is 600 ohm at MHz.
In many products, the two switches are connected with capacitors. Why is there no inductor?
Are one of the two locations in the case of a shell?
I estimate (all of the following are estimates. If there are any mistakes, please advise)
If beads are used or directly connected,
Unexpected levels such as human static electricity will easily enter the switch location,
In this way, the switch is abnormal.
However, if they are disconnected, lightning strikes or other high pressures may cause sparks between the two locations to fire ......
Add a capacitor to avoid this situation.
I am reluctant to explain how to add a capacitor,
Please advise!
The location of the switch eliminates the harmonic through the capacitance between the two locations. Like a high-impedance transformer, he attaches a channel to eliminate harmonic! I think! Please correct me!
The ferrite material is an iron-magnesium alloy or iron-nickel alloy, which has a high magnetic conductivity and can be the smallest capacitance generated between the coil winding of an inductor at a high frequency and high impedance. Ferrite Materials are usually used at high frequencies because their main inductance properties make the online loss very small. In high-frequency cases, they primarily exhibit a ratio of the impedance and change with the frequency. In practical application, ferrite material is used as a high-frequency attenuation device for RF circuits. In fact, ferrite is better equivalent to resistance and inductance parallel, low frequency resistance is short-circuited by inductance, high frequency inductance impedance becomes quite high, so that the current is all through the resistance. Ferrite is a device that consumes high-frequency energy and converts it into heat energy. This is determined by its resistance characteristics.
Coil, magnetic beads
More than one turn of the coil is used to be called Inductance Coil, less than one turn (wire through the magnetic ring) coil used to be called magnetic beads. The purpose is determined by the amount of electric sensing required.
Ask: In the USB Sound Card solution of xunxun, there is also a magnetic bead on the power supply end and the ground end of UBS, I wonder if anyone knows, however, in actual production, some projects also replace magnetic beads with inductance. Is that all right?
What is the role of magnetic beads?
Inductance can be used as a power filter.
The circuit symbol of the magnetic beads is inductance.
However, the model shows that the magnetic beads are used.
In terms of circuit functions, the magnetic beads and inductor work in the same principle, but the frequency characteristics are different.