Inductors and beads have any contact with difference?

Inductance energy storage element, and beads are energy conversion (consumption) devices

Used for power supply filtering circuit inductance, magnetic circuits used for signal for EMC countermeasures

Beads are mainly used to suppress electromagnetic radiation interference, and the inductor used in this area will focus on suppressing conduction disturbances. Both can be used to deal with EMC, EMI problems.

Beads are used to absorb the UHF signal, as some RF circuits, PLL, oscillator circuit, including ultra-high frequency memory circuit (DDR SDRAM, RAMBUS, etc.) need to add beads in the power input section, and a storage inductor energy components, used in the LC oscillator circuit, the low-frequency filter circuit, with its range of transformer applications rarely exceed wrong 50MHZ.

General inductance ground connection, connect the power supply is also inductively, while the signal line is used beads?

But in fact the beads should be able to achieve the purpose of absorbing high frequency interference ah? And high frequency resonant inductor can not be renewed after the inductor effect of ......

Please also express heroes

EMI's first necessary to understand the two ways, namely: radiation and conduction, different ways using different methods of suppression. The former with beads, which inductively.

For IO part wrench, is not based on EMC's purpose can be inductively wrench IO portion and ground isolation, such as the USB of land and land use wrench isolated 10uH inductance can prevent insertion of noise ground plane?

Inductor generally used for matching and signal quality control circuitry. In the analog and digital combination of local magnetic beads.

In the analog and digital combination of local magnetic beads. Beads between digital and analog ground with little

The size of the bead (to be exact beads should be characteristic curve)

Depending on the frequency you need beads absorb interference wave

Why beads units and resistance are the same? ? All Ohm! !

Well beads is blocking high-frequency, low DC resistance, high frequency resistance is high, not enough to understand it,

That such 1000R @ 100Mhz 100M frequency signal 1000 ohm resistor

Because the beads are in accordance with the impedance of its units at a frequency generator to the nominal impedance of the unit is ohm. The beads attached datasheet usually frequency and impedance characteristic curve. Generally 100MHz as standard, such as 2012B601, refers to when the bead at 100MHz Impedance 600 ohms.

In many products, the two capacitors connected to the switch up, why not inductor? You said two places, one of which is not a cabinet?

I estimate (all of the following estimates wrong please give pointers)

If beads or directly connected to it,

Accidents such as body static level could easily enter the switch, the

This switch does not operate properly.

But if the disconnect between them, then struck by lightning or other high-pressure time, causing a spark between the two ground fire ......

Plus capacitance is to avoid this situation.

For added capacitance explain Oh I feel very reluctantly,

Please enlighten master!

Switch places, it is through the capacitance between the two ground to eliminate harmonics. Like the high frequency impedance, he added a passage to eliminate harmonics! I myself think! Please correct me!

Ferrite material is iron or iron-nickel alloy magnesium alloy, a material with high magnetic permeability, he can be between the inductor coil winding in the case of high-frequency capacitance generated high impedance minimum. Ferrite materials generally at high frequency applications because they are the main drive at low frequencies inductor, which makes the line loss is small. At high frequencies, their main characteristic was reactance ratio and varies with frequency. Practical applications, ferrite material is used as a high-frequency RF attenuator circuit used. In fact, the ferrite preferably equivalent to the resistor and the inductor in parallel, low frequency inductance resistor is shorted, the high frequency inductive impedance becomes very high, so that all the current through the resistor. Ferrite is a consuming device, high-frequency energy into heat in the above, it is by his resistance characteristics of the decision.

Coils, beads

There are more than one turn inductor coil used to call, less than one turn (straight wire ring) coils used to call bead. Starting from the required use inductance decision.

Ask: For Hua News of USB sound card scheme, in UBS power supply and ground terminal were also connected with a bead, I do not know whether it was clear, but in the actual production of some projects to replace the beads inductance, and ask Is this okay?

Where the bead is what role yo?

As power supply filter, you can use the inductance.

Beads circuit symbol is the inductance

But the model can be seen using magnetic beads

On the circuit function, beads and inductors are the same principle, but with different frequency characteristic Bale