Varistor - chii? Varistors: kushanda misimboti, marudzi uye kushandisa

Varistor - chii, apo rinoshandiswa, uye chii chinodiwa? Ichi chinhu zvigadzirwa nematunhu kashoma kushandiswa, saka zita rake raiva kwete nzeve. Ngativandirei kugadzirisa izvi uzivanewo basa rake uye kuti ari mudziyo.

Vhuṱanzi

Chine magetsi kuputira, izvo unoenderana yacho aizviti voltage. Nhamba yacho chaiyo zvingasiyana kubva yokungotaura ukoshi. Asi basa zvichagoverwa kana nokutsauka iri diki uye mukati akabvumidza siyana. Asi electrics kazhinji anotadza nokuda voltage kufamba kweropa. Saka akadana chimbichimbi shanduko zvinoitwa imwe pfungwa, kana kuti adzorere yaro yepakutanga pamwero mukati pfupi nguva. The pulses inogona mheni uye nokuchinja. Kudzivirira nokufamba zvakadaro, kushandisa dzakasiyana-siyana mano, akadai vharafu-mhando arresters, filters, neketani nezvimwe zviitiko zvakawanda. Asi akava anobudirira zvikuru varistor. Chii? Saka akadana inobudirira uye rweruzhinji achishandisa kudzivirira pulses kuti kunobva munhu nonlinear semiconductor resistors. Nheyo kushanda riri nyore: a varistor zvakabatana muna akaererana waidzivirira midziyo iri kuipa nzira, zviri kunetsekana uchishandisa voltage ari kuchengetedzwa mudziyo. Kana njodzi ikaitika, rwunotanga hunomubatsira ive insulator. Dzavo runoratidza zviri zvakafanana, ichibata uye yakajeka isiri Linear iyezvino-voltage noruzhinji.

zviito varistor

Kana kupomba kunoitika, kuti midziyo nokuda nonlinearity zvatariswa nokukurumidza kunoderedza kurwisa kwayo (Ohm kuti migove) uye shunts mutoro. Saka kunodzivirirwa, uye zvakawanda simba iri akaparadza sezvo kupisa. Munguva pezvakaitwa kwakadaro kunogona mberi varistor kwazvino zviuru zvakawanda amperes. Uchifunga anenge inertialess mudziyo pashure kupomba akadzimwa, zvakare anova resistive mudziyo. Saka, chaiye ezvinhu, hazvina chokuita kushanda magetsi. Asi pachava pulses pamusoro voltage ngozi, zvino muzorore nechokwadi - Ivo achagura. Izvi zvinoita kuti kuchengeteka kunyange simba kuputira.

Zvikuru dzakakurumbira mapatani

Achitaura pamusoro varistor, chii, hatigoni kuteerera zvinhu izvo zvinonzi zvakaitwa. Yainyanya kushandiswa namano kuti zvinoitwa kushandisa zingi oxide. Izvi imhaka zvikonzero zvinoverengeka:

1. mukugadzira nyore.
2. Zingi ane mano akanaka kupinza mukuru-voltage pulses.

izvo zvakasikwa "zvedongo" zvigadzirwa, unosanganisira zvenzara, vachiridzira, pokushandisa electrodes uye magetsi kuputira, gungano uye pokunamatidza nembambo conformal coatings. Nokuda nyore gadzira anogona akasika kunyange nomumwe mirairo.

chokuguma

Tine nzeve zvakakwana rwakabhadharwa kuna kudzidza chii chiri varistor. Kunyora kuti mudziyo uyu rakaoma uye saka kuzviwanira mudziyo haikwanise kuoneka umboo yakaiswa pamusoro redzimba. Funga pano nezvemuenzaniso uyu: ipapo Cnr-06D400K. Cnr - ndiro zita mhando, muchiitiko ichi tine simbi oxide varistor. 06 - ine dhayamita 6 millimeters. D - pamberi pedu denderedzwa varistor. 400 - voltage oparesheni. K - tsamba iyi inoti zvichibvira kutsauka shiviriro ane kukanganisa 10%. Kana isu nezvazvo mabikirwo kombiyuta, vane varistors zvakagadzirirwa 470V. Bvumiranai, mumwe mujenya. Asi hakuna varistor! Chichatara zvinhu izvi ndakaiswa ose makuru mugadziri yazvo nzira, saka waifarirwa kwezvipimo Kuzivikanwa mitemo ikoko. Naizvozvo zvakafanira kuti kushandisa kana kushandisa vapemhi, kana kushandisa kuminamato vakapofumara.

mufananidzo

Kana tisingadi midziyo chakatsva, zvakakosha kwatiri varistor. Zita iri dhayagiramu sokunge zvake resistor, asi pane zvakawanda oblique mutsetse uye tsamba U. Zvinonzi kuti waivako iri zvakananga novimba voltage chechetere. Asi pamwe nenzira yakasiyana kutarisa varistor. Zita iri dhayagiramu yakaiswa sezvo RU kwaari, uye ipapo anoratidza nhamba. The nhamba iri Serial nhamba, asi tsamba vanotaura zita mudziyo: a resistor-varistor. Information angavawo mazita. Izvi zvinogona kunzi nevakawanda epamba chigadzirwa, riri kugadzirwa fekitari "Progress" muna Ukhta. varistor avo vanoronga inogona ne tsamba A kuna G.

Check eremendi waivako

Pano tine mumaoko varistor. How kuongorora kana zvinoshanda? Root nguva dzose zvakakodzera kubva kwokunze kuongorora. Unofanira kunyatsoongorora dzimba chipped of, ruchitsemuka, blackening kana kungoda chin'ai. Kana pane zvimwewo kuremara, ipapo ichi oga kunoratidza kuti chinhu anofanira kutsiviwa kana kwete zvachose. Kana rokuongorora kuwana matambudziko, zvino iwe wagadzirira kutarisa multimeter. Panyaya iyi, iyo tester anofanira kuitwa nokuyerwa muoti, kufadza kurwisa. Ndiyo nyore nzira kuudza kana varistor mushandi. How kuongorora kana inoshanda, isu kare wakafukidzwa, ngatiendei vakurukure sei kunhonga zvakakodzera zvinhu.

Optimum uchishandisa muoti

Nokuda mukuru linearity ari mudziyo kuwana zvakanakisisa zviruva nokuda anorimwa - hapana nyore. Nokuti asi ichi chinangwa yakaoma uye vakawanda Masvomhu. Great kukosha mune iyi iri kuridzwa ne uchishandisa uno, kukosha iyo inofanira kuva shoma uye haiiti kuti overheating ari mudziyo. Asi pano zvakafanira chinonengaidza. Pashure pezvose, kana ukashandisa newewo yakaderera uchishandisa razvino, izvozvo kuchawedzera voltage muganhu uye chikwata haadi yayo inokosha ushande. Sezvo "simbe" musimboti anogona kupfeka musimboti kushanda zvakananga voltage haafaniri kupfuudza 0,85 kakapetwa varistor pachikumbaridzo. Zvisinei, ichi nzira nyore haisi chaizvo kushanda uchidzidzira. Handiti, basa iri zvakananga MOV, uye aida zvaizoitika, uye kukura kwebasa okurambidzwa kunofanira kusarudzwa nomumwe chaicho nyaya.

Selection uye kugadzwa

About nokuti varistors igadzikwe akaererana kuchengetedzwa magetsi, hatina kare kutaurwa. Chinonyanya vaifarira rwendo vanomhanyisa varistors ndiyo nzvimbo mushure nokuchinja mudziyo (kana ukatarira mutoro kudzivirirwa). Sezvo muenzaniso rakapedzwa mhinduro kunogona zvibereko "Progress" chirimwa yambotaurwa inonzi "zvechivhurumukira-1." varistor ichi chakagadzirirwa richengetwe kusvikira yemagetsi remadziro. Pamusana kwaari, unogona chete kushandisa-danho matatu mutoro kudzivirirwa zano pamwe remubatanidzwa ane "nyeredzi" kana "Triangle". Kana neimwe nzira sarudza kudzivirira magetsi zvivako 3, ayo dzinofambiswa noruoko-danho matatu Network.

parameters

Achitaura pamusoro varistor, chii, hatikwanise zvachiri kuti zvinokosha iri basa rako?

1. Kupatsanura voltage. Saka tinoti chamunowana izvo kuitika 1 Ma runoyerera napakati mudziyo.
2. Kufadza bvumidzwa rakatumbuka voltage. Izvi zvinoreva chamunowana iyo varistor iri kusashanda uye anotanga kuzadzika kwayo inodzivirira ushande.
3. Kufadza bvumidzwa chichiitwa voltage. Zvakafanana yapfuura shanduro. Asi muchiitiko chino totaura kushanda pamwe kugara ano.
4. The kunonyanyisa voltage nemiganhu. Ndicho chamunowana uko varistor anogona kushanda pasina kukuvara. Kazhinji, izvozvo raanotaura yoga zvakasiyana ano tsika. Kana iwe kupfuura mari iyi, iyo varistor achaita kutsemuka hafu kana kunyange akaputswa-putswa.
5. Kufadza woga simba. Akaratidza joules. Ko kunonyanyisa kukosha kupomba simba inogona akaparadza ne- varistor muchimiro kupisa pasina ngozi kuparadza mudziyo pachayo.
6. Response nguva. span ichi uyo mudziyo kunoita kubva ehurumende mumwe, kana kufadza bvumidzwa voltage yave kupfuura. Yemanyorero akayera mu makumi nanoseconds.
7. Kubvumidza. Izvi ukoshi shanduko icho zvinodiwa varistor voltage anonzi chakaipa. Nguva dzose akaratidza kuva chikamu. anogona kunzwisiswa se kubva nenyaya pamusoro, pfungwa iyi zvinoratidzwa tsamba pakupera kupenda.

kushandiswa

Ngatimboongororai Somuenzaniso, imwe richikurukura 220 volts. Nokuti zvichava optimized nokuda namano kuti pave nekukurukurirana voltage ndiyo 275-420V Range (asi pane zvimwe zvekushandisa mashoko, isu hatingazvirumbidzi kubata). Somunhu mutsetse Sefa rinoshandiswa katatu varistor. Ivo adzikatidza kupinda pakati pulses uye zero-danho redunhu. Asi nei vatatu vavo? It dzimwe nguva zvinoitika kuti nhau pitikoti nemishumo matambudziko, nokuda iyo zviuru vanhu vakarasikirwa Electronics dzavo. Izvi zvinoitika kana, pachinzvimbo razero uye chimwe chinhanho-ne-waya mubvunzo chete chechipiri. Nokuti midziyo ranyura nguva vamwe rufu. Asi kuvapo varistor pa razero kuti abudirire kudzivirira pamusoro ezvinhu akadaro. In muenzaniso yokufananidzira, maserura. Saka havana ichiridzwa, kushandisa vakasiyana multilayer varistors. Mukuwedzera, vanogona kuwanikwa Telecom michina uye Automotive Electronics.