Judgment of the qual&λ↔ity of integrated inductor:
For the chip mounted induc±"<tor, the reading should be zero a±←t this time. If the multimeter readi♥₽§×ng is too large or infinite, it ↑÷&indicates that the inductor is damag€ε'✔ed.
Inductance measurement♥↓": Set the multimeter to the buzzer dio>‌↕de position, place the probes on the t<≤∏wo pins, and observe the readi↔♠ng of the multimeter.>±♦
For inductance coils with m↓↓ore turns and thinner wire dia↔♦meters, the reading ca™σ↑•n reach tens to hundreds, and usuπ©ally the DC resistance← ×≈ of the coil is only a f‍®ew ohms.
The damage manifests as scalding or©• obvious damage to the inductance magneγ‍tic ring. If the inductance coil is not"<♠ severely damaged and can₹δnot be determined, the inductance can &✘‍≤be measured using an inductance meter ₹•✔or judged using a repla‌♣∞cement method.
The integrated inductor is >↓↓★suitable for damp and dry environmentsφ∏'✘, high and low ambient temperatur$®×€es, high-frequency or low-fr ≈equency environments, and should ↓←pay attention to whet™≥ ®her the inductor exhibits ind♠÷uctive or impedance charact ♣eristics.

Selection of integrate♠σ→d inductor:
The production of integra"♥♥ted inductors is determined by←Ω& the selection of magnetic cores. The"σ"↑ following explains the ad♥₽∑vantages of manganese zinc magnetic corδ¥'×es and their applica>γtions in inductors:
Manganese zinc magneπ‌'∞tic core is a type of so<≠'ft magnetic core with high in™ ™itial permeability. §∑ΩThe surface resistance o$βf this product is low, an★©±d the higher the initial perme​≠♣ ability, the lower t∞δ™₽he surface resistance. Ther✘₹efore, it is generally us✘$ed in circuits below 1MHz.

Main purpose:
The initial permeability of this mater≤σial is generally around 2000-3000,∏ε★ with a high saturation ma∏♥‍gnetic flux density and¶& low losses, making it♠₩ one of the most ideal powerσ'± inductor cores at around ±<100KHz.
The nickel zinc core is a sof★'♥§t ferrite core. The initial p•λφermeability of the nickel zinc core π©→ is generally 5~1500. Due✔  to its high surface resistance, t≤δ'he core is generally" γ used in medium and high freqα™uency circuits.
Main performance: EMI mater<<ials rely on magnetic and elec®¶∞trical losses to absorb electrom&♦πagnetic energy and abs₹§∞δorb interfering electroma€★§gnetic waves. Therefore, they general☆>£ly require high impedance und↕<er conditions of 10-100M &Hz and are generally used f←≠♣or magnetic beads.