Capacitors yog ib qho ntawm cov khoom tseem ceeb hauv lub neej niaj hnub no, los ntawm lub voj voog loj mus rau lub me me hluav taws xob motherboard, tshwj xeeb tshaj yog rau kev pib ntawm ib-theem motors, lawv txhua tus xav tau. Lub capacitor yog ib qho khoom siv hluav taws xob uas tuav thiab tso tawm hluav taws xob.
Yuav ua li cas capacitors ua haujlwm
Lub hauv paus ntsiab lus ua haujlwm ntawm capacitors yog qhov yooj yim heev. Piv txwv li, nyob rau hauv cov kav dej hauv tsev, cov dej xa dej sab yuav tsum tau mus deb heev thiab cov dej yuav inevitably loj thiab me me nyob rau lub sij hawm. Yog tias cov dej tau muab ncaj qha rau cov neeg siv khoom, cov dej yuav hnov qhov loj thiab me me nyob rau lub sijhawm. Lub tuam txhab dej feem ntau tsim cov pej thuam dej ntawm ib ntus. Lub hom phiaj ntawm lub tuam tsev dej no yog khaws cov dej, kom cov dej tsis ruaj khov tuaj yeem xa mus rau txhua tsev neeg kom ruaj khov.
Cov dej ntauwd no sib raug rau lub capacitor hauv cov khoom siv hluav taws xob, uas khaws cov khoom siv hluav taws xob, hloov hluav taws xob tsis ruaj khov rau hauv hluav taws xob ruaj khov rau kev xa mus rau hauv Circuit Court. Qhov zoo tshaj plaws capacitor tsis siv hluav taws xob hluav taws xob nws tus kheej, nws tawm ntau lub zog raws li nws nqus. Thaum lub input voltage fluctuates, lub capacitor generates tam sim no, raws li nws yog them los yog tawm, tab sis thaum lub voltage yog ruaj khov, tsis muaj tam sim no generated, uas yog hu ua "direct current flow".
Kev them nyiaj ntawm lub capacitor
Thaum ob daim hlau ntawm lub capacitor txuas nrog rau qhov zoo thiab qhov tsis zoo ntawm lub roj teeb, ob daim hlau raug them nrog qhov sib npaug ntawm tus nqi sib txawv, txheej txheem hu ua them.
Thaum lub capacitor raug them, muaj qhov hluav taws xob hluav taws xob ntawm ob daim hlau thiab qhov sib txawv yog U. Cov hluav taws xob hluav taws xob tau txais los ntawm cov khoom siv hluav taws xob yog khaws cia hauv hluav taws xob thiab lub zog no hu ua hluav taws xob hluav taws xob. Capacitors muaj peev xwm khaws cov nqi thiab hluav taws xob hluav taws xob.
Tshem tawm ntawm lub capacitor
Thaum ob daim hlau ntawm lub capacitor hloov mus tom qab them nyiaj, cov nqi ntawm ob lub phaj yog nruab nrab thiab lub capacitor tsis raug them lawm, cov txheej txheem no hu ua paug tawm thiab muaj qhov paug tawm luv luv.
Cov txheej txheem ntawm kev sau npe lub ntsiab capacitor tsis
Direct marking method
Electrolytic capacitors los yog loj dua tsis-polar capacitors: nominal muaj peev xwm, ntsuas voltage thiab tso cai sib txawv.
Me me uas tsis yog-polar capacitor: nominal muaj peev xwm, ntsuas voltage thiab tso cai sib txawv.
Muaj peev xwm units: microfarads (μF), nanofarads (nF), picofarads (pF)
Piv txwv li: 1p2 rau 1.2 pF; 1n rau 1 000 pF; 10n rau 0.01 μF; 2 μ2 rau 2.2 μF.
Digit labeling method
Txoj kev sau npe digital feem ntau muaj peb tus lej qhia txog qhov capacitance ntawm lub capacitor hauv pF. Thawj ob tus lej yog tus lej zoo ntawm lub peev xwm, qhov thib peb yog tus lej sib npaug, tab sis tus lej thib peb yog 9 thaum nws txhais tau tias ×10-1.
Piv txwv li:
101 txhais tau tias: 10 × 101=100 pF
102 txhais tau tias: 10 × 102=1 000 pF
103 txhais tau tias: 10 × 103=0. 01f ua
104 txhais tau tias: 10 × 104=0.1 μF
223 Luas=10 x 2. 022f ua
474 x 10 x 2. 47mf ua
159 : 10 × 2. 5 pf ua
Xim coding txoj kev
Xim coding txoj kev: Xim rings los yog dots yog cim rau ntawm lub capacitor los qhia lub capacitance thiab qhov permissible sib txawv.
Plaub-ntiv nplhaib xim coding txoj kev: thawj thiab thib ob rings qhia tus nqi zoo, lub nplhaib thib peb qhia tus multiplier thiab plaub lub nplhaib qhia qhov kev tso cai sib txawv (rau cov capacitors sib txawv).
Tsib-ntiv nplhaib xim coding txoj kev: thawj, thib ob thiab thib peb rings qhia qhov siv tau qhov tseem ceeb, plaub lub nplhaib qhia tus multiplier thiab lub nplhaib thib tsib qhia qhov sib txawv (rau precision capacitors).
Piv txwv li:
Xim av, dub, txiv kab ntxwv thiab kub qhia txog qhov muaj peev xwm ntawm 0.01 μF nrog kev tso cai sib txawv ntawm ± 5 feem pua
Xim av, dub, dub, liab, xim av qhia tias muaj peev xwm ntawm 0.01 μF nrog qhov sib txawv ntawm ± 1 feem pua.
Peb nyob hauv txoj haujlwm zoo tsis yog tsuas yog muab koj lub tshuab zoo pnp, tab sis kuj yog qhov kev pabcuam zoo tom qab muag.
Cov kws tshaj lij engineers tau kawm zoo yuav muab kev txhawb nqa rau koj.
10 engineers muaj zog pab neeg tom qab kev muag khoom tuaj yeem teb cov lus nug thiab cov lus nug hauv 8 teev.
Cov kev daws teeb meem muaj peev xwm muab tau hauv 24 teev ob hnub ua haujlwm thiab hnub so.
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