Thermosetting SB578F/AU4V110X series lead solenoid valve coil

Tsis txhob hnov ​​​​qab txog kab mob parasitic inductance, inductance coil, electromagnetic kauj

1. Nws tau qhia tias parasitic inductance uas tsis tuaj yeem tsis quav ntsej yog ib nrab ntawm cov kab mob parasitic inductance uas yuav tsum tau txiav txim siab hauv PCB los ntawm kev npaj.

Nyob rau hauv kev npaj ntawm high-ceev digital circuits, qhov kev puas tsuaj tshwm sim los ntawm parasitic inductance ntawm vias yog feem ntau ntau dua qhov uas tshwm sim los ntawm parasitic capacitance. Nws cov kab mob parasitic inductance yuav ua rau tsis muaj zog rau kev koom tes ntawm bypass capacitor thiab kev lim dej ntawm tag nrho cov khoom siv hluav taws xob.

2. Peb tuaj yeem siv cov qauv hauv qab no los xam qhov kwv yees tus kab mob parasitic inductance ntawm ib qho ntawm:

L = 5.08h [Nyob rau hauv (4h / d) + 1] qhov twg l yog hais txog qhov inductance ntawm lub via, h yog qhov ntev ntawm lub via, thiab d yog txoj kab uas hla ntawm nruab nrab qhov. Nws tuaj yeem pom los ntawm cov qauv hais tias txoj kab uas hla ntawm lub qhov ntawm lub qhov muaj qhov cuam tshuam me ntsis ntawm qhov inductance, tab sis qhov ntev ntawm lub qhov ntawm lub qhov muaj qhov cuam tshuam loj tshaj plaws ntawm qhov inductance. Tseem siv cov piv txwv saum toj no, qhov inductance ntawm lub qhov tuaj yeem suav tias yog: l = 5.08 x 0.050 [hauv (4x0.050/0.010)+1] = 1.015 NH. Yog tias lub sijhawm nce ntawm lub teeb liab yog 1nS, qhov sib npaug impedance yog XL = TL / T10-90 = 3.190. Hom impedance no tsis tuaj yeem ignored thaum muaj high-frequency tam sim no. Nws yog ib qho tseem ceeb tshwj xeeb uas yuav tsum nco ntsoov tias lub bypass capacitor yuav tsum dhau los ntawm ob lub vias thaum txuas lub hwj chim txheej thiab stratum, yog li cov kab mob parasitic inductance ntawm vias yuav nce exponentially.

Ua rau inductance cua sov

Qhia thiab piav qhia qhov ua rau ntawm inductance cua sov.

1. Cov hlau yog nyias dhau, uas yuav ua rau qhov kev tiv thaiv ntawm inductor loj heev. Nyob rau hauv cov xwm txheej uas qhov txiaj ntsig zoo ntawm qhov tam sim no yog qhov tseeb, nws yog qhov qub rau tus ncej kom sov.

2, lub inductance yog tag nrho, thiab hom kub taub hau no kuj dav heev.

3. Muaj qhov kev vibration loj ntawm ob qho kawg ntawm qhov inductor, yog li cov tub ntxhais tau hloov pauv kom loj dua, uas tuaj yeem txo tus naj npawb ntawm cov lem thiab txo cov kab ntev. Forward conversion, me me ripple tam sim no, me me sib nqus poob, feem ntau kuj kub.