First, inductance classification
Classified by inductance form: fixed inductance, variable inductance.
According to the properties of magnetic conductivity: hollow coil, ferrite coil, iron coil, copper coil.
By working nature: antenna coil, oscillation coil, choke coil, trap coil, deflection coil.
According to the structure of winding: single- coil, multi- coil, honeycomb coil.
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All Cx Family EMI chokes feature a low-profile, toroidal construction in a surface-mount, magnetically-shielded package with footprints as small as x mm. They are available with current ratings up to Amps (Irms) and provide 1000/Vrms isolation (hipot) between windings. They feature RoHS-compliant tin-silver-copper over tin over nickel over phos bronze terminations and withstand a maximum reflow temperature of 260°C.
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Adjustable inductance/molded coil inductance, copper core/aluminum core: the maximum inductance value is at the place where 1/is suspended from the top of the screw; The magnetic core is completely covered by the coil, and the up-regulated sensitivity decreases.
The problem with adjustable inductor/molded coil is the sliding teeth. There is also the frequency problem, the improvement measures are as follows:
1. Magnetic core material replacement, such as copper core replacement, aluminum core, etc.
2. Change the size of the magnetic core. The larger the magnetic core is, the greater the sensing value will be.
3. Change the number of turns. The smaller the number of turns, the higher the frequency.
The larger the size, the greater the sensitivity and the smaller the frequency.
The frequency of adjustable inductor/molded coil increases, but the inductance decreases. The density is large, the density is small.
Production material is copper alloy, copper screw in the latest edition of the ROHS exemption rules, rules of copper alloy of lead not more than 4parts per million (4%) is qualified, there are many customers in found that testing data is thousands or even tens of thousands of panic, when in fact this is within the scope of ROHS, was identified as ring protection, harmless to the human body. Please feel free to use, magnetic screw and a permeability parameters of low permeability, high Q value, quantity is big, the feeling of low frequency; Those with high magnetic permeability have low Q value, low sensitivity and high frequency.
The single frequency of molded coil is about 150MHZ, and the frequency will increase correspondingly with different capacitors/cores. The larger the capacitance, the smaller the frequency, and the smaller the capacitance, the higher the frequency.
从同一母线引出的分支馈线上往往串有限流电抗器，以限制馈线的短路电流，并维持母线电压，不致因馈线短路而致过低。电抗器的分类电抗器分类按结构及冷却介质按接法按功能按用途进行分类。电抗器分类按结构及冷却介质分为空心式铁心式干式油浸式等，例如干式空心电抗器干式铁心电抗器油浸铁心电抗器油浸空心电抗器夹持式干式空心电抗器绕包式干式空心电抗器水泥电抗器等。 电抗器分类按接法分为并联电抗器和串联电抗器。 电抗器分类按功能分为限流和补偿。hpkmbdsa