What are the connections and differences between inductors and magnetic beads?
1. Inductors are energy storage elements, while magnetic beads are energy conversion (consumption) devices;
2. Inductance is mostly used in power filter circuit, magnetic beads are mostly used in signal circuit and EMC countermeasures;
3. Magnetic beads are mainly used to suppress electromagnetic radiation interference, while inductors are mainly used to suppress conductive interference. Both of them can be used to deal with EMC and EMI problems.EMI two ways, namely: radiation and conduction, different ways use different suppression methods, the former with magnetic beads, the latter with inductance;
4, magnetic beads are used to absorb uhf signals, such as some RF circuits, PLL, oscillation circuit, including uhf memory circuit (DDRSDRAM, RAMBUS, etc.) need to add magnetic beads in the power input part, and inductance is an energy storage element, used in LC oscillation circuit, low and medium frequency filter circuit, its application frequency range is rarely more than 50MHZ;
5, inductance is generally used for circuit matching and signal quality control, general connection and power supply connection.Magnetic beads are used where analog and digital fields are combined.Magnetic beads are also used for signal lines.
The size of the magnetic bead (or rather the characteristic curve of the bead) depends on the frequency of the interfering wave that needs to be absorbed by the bead.Magnetic beads are resistance to high frequency, low resistance to dc, high resistance to high frequency.Because the magnetic bead is labeled in terms of the impedance it produces at a certain frequency, the unit of impedance is also the ohm.Datasheet datasheet datasheet datasheet datasheet datasheet datasheet datasheet datasheet datasheet datasheet datasheet datasheet datasheet datasheetNormally 100MHz is the standard, such as 2012B601, which refers to the Impedance of 600 ohm of magnetic bead at 100MHz.
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