Dab tsi diodes feem ntau siv rau kev tiv thaiv tam sim no tam sim no hauv kev faib tawm cov network?

一, TVs Diode: Kev Tiv Thaiv Kev Tiv Thaiv Cov Qauv nrog Millisecond qib teb
1. Ntaus cov yam ntxwv thiab ua haujlwm hauv paus ntsiab lus
Cov TVs (Transient voltage suppressor) diodes tau tsim raws li avalanche tawg ua kom zoo (tsawg dua los yog sib npaug) thiab meej clamping voltage tswj. Thaum lub tshuab hluav taws xob rub tawm tshaj li nws qhov kev hloov pauv (vbr) Cov clamping coefficient (vc / vbr) yog 1.2- 1.4. Piv txwv li, P0640Sc Series TVs Yuav Tiv Thaiv Peak

2. Cov ntsiab lus tseem ceeb rau kev xaiv
Rov qab txiav tawm cov hluav taws xob (VRMM): Nws yuav tsum yog 1.1-1.2 lub sij hawm siab dua li cov kev ua haujlwm zoo tshaj ntawm Circuit Court. Piv txwv li, 120V system yuav tsum siv cov khoom siv nrog VRMM ntau dua lossis sib npaug ntawm 132V.
Peak Mem tes hluav taws xob (PPP): suav raws li surge zog, xws li PPP loj dua lossis sib npaug ntawm E (VC nyob rau hauv 8/20 μ S wavegle.
Junction capacitance (CJ): Cov cuab yeej siv hluav taws xob (xws li 0.1 {- 10pf) yuav tsum tau xaiv rau cov kab mob siab kom tsis txhob muaj teeb meem teeb liab. Piv txwv li, USB 3.0 interface yuav tsum siv TVs cov hlab nrog cJ tsawg dua lossis sib npaug rau 0.3pf.
3. Raug ntawv thov cov xwm txheej
Cov ntaub ntawv centre fais fab TVS TVS cov leeg yog siv los txua peb - kev tiv thaiv qib. Thawj qib siv siab - cov khoom siv hluav taws xob (xws li 1500W) kom nqus lub zog loj (xws li 500w) los tiv thaiv cov chips ristic.
Photovoltaic Inverter DC sab: Cov hlua TVS txuas nrog hauv DC 1000v system mus rau kev hloov pauv huab los yog cov tshuab hloov lossis cov khoom siv array.
2, semiconductor tawm lub raj (TSS): Kev tiv thaiv caj qaum rau cov peev txheej tam sim no
1. Ntaus cov yam ntxwv thiab ua haujlwm hauv paus ntsiab lus
TSS (Thyristor Surge Supplgeors) adopts pnpn plaub txheej qauv, uas muab cov yam ntxwv hloov pauv ntawm cov unidirectional conductivity ntawm dodees. Nws cov tub ntxhais tau txais txiaj ntsig hauv nws qhov kev ua kom muaj siab txog kev thev taus (nce siab txog cov yam ntxwv (raug VC tsawg dua lossis sib npaug rau 2 zaug VBR). Piv txwv li, P0640SC Series Tss tau tiv thaiv ib qho 20ka kev voltage hauv qab 8/20}} voltage faib cov kab mob network.

2. Cov ntsiab lus tseem ceeb rau kev xaiv
Kev rhuav tshem voltage (VBO): Nws xav tau kom phim cov nominal voltage ntawm lub system, xws li xaiv cov khoom siv nrog VBO {}} kv rau 10kv system.
Cov khoom muaj peev xwm tam sim no (IPP): Raws li cov nqi pheej hmoo kev pheej hmoo, cov cuab yeej siv ntau dua lossis sib npaug rau thaj chaw uas muaj av hlob.
Teb lub sijhawm: nqi nqi tsawg dua los yog sib npaug rau 100ns, xav kom muaj kev sib koom tes nrog TVs raj kom tau txais kev tiv thaiv.
3. Raug ntawv thov cov xwm txheej
Hloov cov khoom lag luam xaus: ib qho kev tiv thaiv kev tiv thaiv ntawm TSS thiab TSS ua ke kom nqus tau siab thiab ua kom muaj zog thib ob los txwv cov hluav taws xob seem.
Cov kab sau cua sau: parallel tss ntawm 35kv cable lub davhlau ya nyob twg los txhawm rau txhawb kev ua haujlwm ntawm cable.
3, varistor (mov): kev lag luam tsis txaus siab thiab muaj txiaj ntsig zoo rau ntiaj teb
1. Ntaus cov yam ntxwv thiab ua haujlwm hauv paus ntsiab lus
Mov (hlau oxide varistor) siv zinc oxide raws li cov khoom tseem ceeb thiab ua tiav voltinear txwv kev ua haujlwm los ntawm NonLinear Volt Ampere cov yam ntxwv. Nws cov tub ntxhais tau txais txiaj ntsig nyob rau hauv siab tus nqi {{1} muaj peev xwm thiab muaj peev xwm ua tau zoo (mus txog kev ua haujlwm siab tom qab siv ntev}. Piv txwv li, 14d471k mov tuaj yeem tiv taus 40 teev tsaus ntuj thiab yog qhov tsim nyog rau kev tiv thaiv kawg hauv qis- voltage fertibing network.

2. Cov ntsiab lus tseem ceeb rau kev xaiv
Rhiab (V1MA): Nws yuav tsum tau siab dua qhov siab tshaj plaws chartating ua hauj lwm voltage ntawm cov khoom siv nrog v1ma ntau dua lossis sib npaug ntawm 320V rau 220V system.
Muaj peev xwm tam sim no: Raws li xob laim qib kev pheej hmoo, kev tiv thaiv chav kawm yuav tsum tau siv IUITP ntau dua lossis sib npaug nrog 65ka μ s wavetform).
Tawvsis tam sim no: tus nqi ib txwm tsawg dua los yog sib npaug rau 20 μ A, kev xeem ib txwm yuav tsum tiv thaiv kev laus thiab tsis ua tiav.
3. Raug ntawv thov cov xwm txheej
Cov khoom siv nyob hauv lub thawv: Txais yuav tau ua rau peb {}}} Cov khoom siv hluav taws xob tseem ceeb (xws li 2ka) hauv lub qhov (socket).
Muaj lub cev muaj zog tswj cov txee: parallel ua rau cov lus tawm xaus ntawm cov zaus hloov pauv mus rau kev hloov pauv hloov pauv ntawm lub cev muaj zog nres.
4, Kev tsim kho lub tswv yim ntawm ntau -} Kev tiv thaiv qib kev tiv thaiv kab ke
1. Lub ntsiab cai ntawm kev tiv thaiv graded
Txais cov txheej txheem sib xyaw ntawm "coarse tiv thaiv + kev tiv thaiv zoo":

Qib 1 (Kev tiv thaiv coarse): install txwv lossis siab- lub zog tso ntawm lub zog nkag mus nqus lub zog loj (xws li xob laim loj).
Qib thib ob (Precision Kev Tiv Thaiv): Nruab TV rau ntawm sab xub ntiag ntawm cov khoom siv voltage rau qhov chaw nyab xeeb (xws li hauv qab nti withstand tus nqi).
Qib peb (tiv thaiv hauv zos): Txuas qis {Fower Tvs tvs hauv parallel ib sab ntawm cov khoom siv uas tsis muaj kev tiv thaiv.
2. Cov ntsiab lus tseem ceeb rau parameter kev koom ua ke
Kev tswj zog: ua kom peb lub zog ua ntej
Kev sib koom ua ke: VC tus nqi ntawm txhua theem ntawm cov cuab yeej yuav tsum tau maj mam txo kom tsim "gradient tiv thaiv". Piv txwv li, thawj qib vC yog 1500v, theem thib ob VC yog 800v, ​​thiab theem peb vC yog 400v.
Lub sij hawm sib koom tes: Siv qhov sib txawv hauv cov sijhawm ua haujlwm) Tss ≈ 100ns, TVs ≈ 1ns) kom ua tiav cov lus teb nrawm.