Varistor: ukusebenza isimiso, izici, isabelo. Kanjani a varistor?

Ngokuthi varistor Semiconductor resistors, okuyinto bayakwazi ukunciphisa ukumelana izikhathi 10 ukubaluleka kokuqala ngokwandisa voltage. Ngokwesibonelo, uma Resistor has a ukumelana 1000 megohms, nokusetshenziswa kwalesi sakhi kuba ohms 1,000. Ngakho, ukumelana incipha lapho voltage kwandisa.

Njengomthetho, zingabantu oxide metal noma ukhethe oxide. Uma sibheke izici zamanje yamandla aphindeke kabili ye-varistor, kungase kuqashelwe ukuthi unohlobo non-eqondile ziyalingana, ie-ke ungasebenza hhayi kuphela kwi-njalo kodwa zinamandla onhlobonhlobo. i-elementi okunjalo unamathele parallel umthwalo. Kanjani a varistor? Lapho lo voltage in wamanje amapayipi sihamba hhayi ngokusebenzisa imishini, okungukuthi varistor. idivayisi ezinjalo okwazi usabalalisa amandla njengoba ukushisa. Izici zako - a Phinde Usebenzise Futhi yokutakula isikhathi, okungukuthi, ukumelana has sibalo kokuqala phakathi amandla ukulahlekelwa.

Uyini Umgomo we varistor? Into akuhlukile i Resistor abavamile, okungukuthi, phakathi operation evamile electronics ke ine ukumelana ohmic. Ngakho, cabanga ngalokho has varistor isimiso.

Inkomba ye-Ukumelana impela high futhi angase afinyelele 100,000 ohms. Lapho voltage ivuliwe, kungenzeka encishisiwe ngokushesha uma kuba nesidingo ezingeni Ukuvikelwa. Ukumelana liphuma 100,000 ohms ukufika ku-100 Uma ukubaluleka uwela umkhawulo ongaphakeme, noma ilingane no-zero, kungaba khona short circuit. Kulesi fuse, elisetendeni i wesifunda kagesi phambi varistor ehluleka. Ngemva kwalokho, umbonisi kagesi ivaliwe futhi voltage sivaliwe ngokuphelele.

Njengoba kushiwo ngaphambili, ngokungabi bikho voltage varistor ungalulama ngokuphelele futhi umsebenzi mode efanayo. Ukuze ukusebenza kwawo ofuna ukusishintsha fuse kushaywa. Ngaphezu kwalokho, isisetjenziswa se-elektroniki izosebenza kahle. I varistor ixhunyiwe kuhambisana kwamandla. Cabanga ngalokho has varistor Umgomo we operation, isibonelo i-computer abavamile siqu. Njengoba has terminals ezimbili, okunamathiselwe wenziwa isigaba kuqondane and zero.

Kuyini into?

Ilungiselelo elinjalo, njengoba varistor, okuyinto inezithombe kulesi sihloko, kubonakala sengathi i-Resistor abavamile, okungukuthi, kuyinto singunxande. Kodwa namanje it has umehluko encane. In the phakathi iqalisa idayagonali, ekupheleni okuyinto lwalugobile.

Njengoba eziphawuleka varistor?

Namuhla singakwazi ukubhekana ngokuphumelelayo abizwa ezingafani ezisetshenziswa yila amadivaysi. nomkhiqizi ngamunye unelungelo ukusetha yayo. Ukumaka kuhluke, ngoba izici lobuchwepheshe varistors ababonakali ngezikhundla komunye nomunye. Izibonelo zifaka izimo ezifana nalezi voltage ovumelekile noma ezingeni lamanje oyifunayo.

Okwamanje, nomkhiqizi ngamunye usetha izibazi zalezi zinhlobo amadivaysi. Lokhu kungenxa yokuthi amadivayisi ekhiqizwa babe Ukucaciswa ezahlukene. Ngokwesibonelo, esiphezulu voltage kuvunyelwe noma zamanje kwadingeka kwezinhlelo ezingeni ukusebenza. Ethandwa kakhulu wokugubha - CNR, ehambisana ukuthi ukwakhelwa njengohlelo 07D390K. Kusho ukuthini lokhu? Ngakho, ukuqokwa CNR ngokwalo libonisa uhlobo idivayisi. Kulokhu, lo suppressor yokwanda kuyinto oxide metal.

Ngaphezu kwalokho, 07 - idivayisi usayizi ububanzi ukuthi ilingana 7 mm. D - idivayisi disk, futhi 390 - esiphezulu voltage value.

Amapharamitha eyinhloko varistors

Lezi nemingcele zihlanganisa:

• voltage kuyinsakavukela;
• izinga esiphezulu AC futhi DC;
• isiqongo zokuncishiswa kwamandla;
• amaphutha kungenzeka;
• nto umsebenzi.

ukuhlola

Ukuze ukuhlole lokhu isisetjenziswa se-elektroniki, kusetshenziswa imishini ekhethekile, othiwa umhloli. Ngakho, ukuhlola bazodinga varistor, isimiso okuyinto ukushintsha imingcele ukumelana naso futhi kwenze kudivayisi yakho yokuhlola. Ngaphambi ukuqala yayo, kuzomele uvule idivayisi iphinde ukushintshela kwimodi ukumelana. Kungaleso sikhathi kuphela lapho umshini uzohlangana zonke izidingo ezidingekayo lobuchwepheshe, kanye nenani ukumelana kuyoba omkhulu.

Ngaphambi kokwenza ukuhlolwa ukuhlola isimo lobuchwepheshe zedivayisi. Into yokuqala okumele ukubheka ukubonakala kwakhe. Insimbi kumele kube khulula imifantu, kanye izimpawu ukuthi yashiswa. Akufanele kuthathwe ukuba apharathasi ukuhlolwa ulondekile, njenganoma yikuphi ukwehluleka ezincane kungaholela izimo ezingemnandi.

Varistors: isicelo

Amadivayisi anjalo ukudlala indima ebalulekile yokuphila komuntu. Kusukela zonke lezi zindlela osekukhulunywe singasho ukuthi suppressor yokwanda, isimiso okuyinto ukuvikela electronics kusuka voltage okusezingeni eliphezulu kunethiwekhi, esiza ukuba umonakalo izinto eziningi kagesi kanye wiring ukulondoloza ubuqotho. Indawo eyinhloko wesifunda kagesi imishini ezahlukene. Ngokwesibonelo, zenzeka ekuqaleni-up yokukhanyisa izakhi, okuyizinto obizwa nangokuthi ballasts. Futhi izifunda kagesi ukufakwa varistors ekhethekile, ukusetshenziswa okuyinto edingekayo ekulinganiseni voltage zamanje. Amadivayisi anjalo zisasetshenziswa nezintambo zikagesi. Kodwa lapho bebizwa arresters, voltage yokusebenza volts ezingaphezu kuka amabili.

Varistors ungasebenza elikhulu voltage range oqala lwenani elincane kakhulu 3 V, futhi iphela 200 V Ngokuqondene isici samanje, lapha uhla kusuka 0.1 kuya 1 A. Lezi zinombolo zamanje avumeleke kuphela voltage low imishini yezobuchwepheshe .

ezicini ezinhle varistors

Lolu hlobo lwe-apharathasi unezimfanelo eziningi ezinhle, uma siqhathanisa ke namanye amadivayisi, njengemoto arrester yokwanda. Lezi izinzuzo ezibalulekile zibandakanya:

• ukusebenza ngesivinini timphawu;
• kungenzeka ethungatha umehluko ngaphandle inertia zamanje;
• kungenzeka zokusebenzisa ezingeni voltage in the uhla kusuka 12 kuya 1800;
• ukuphila isikhathi eside;
• izindleko iphansana ngenxa inkimbinkimbi ukwakhiwa.

izici ezingezinhle

Ekanye nedlanzana enkulu kangaka izinzuzo phezu kwamanye amadivaysi, kukhona nemibi abalulekile, phakathi awo.

1. Varistors abe omningi self-capacitance, esithinta umsebenzi inethiwekhi kagesi. isakhi okunjalo kungaba ku ezahlukene kusukela 80 kuya ku-3000 PF. It kuxhomeke ezintweni eziningi: umklamo kanye nokuvela varistor, futhi seqiwe ezingeni voltage. Kuyaphawuleka ukuthi kwezinye izimo, lokhu ethile enkulu abe Inzuzo enkulu. Kodwa lokhu kungenzeka kuyinto ngempela ezingavamile, isibonelo, uma usebenzisa varistor e izihlungi. Kulesi simo, obunamandla elizoba ngesivalo ku amapayipi voltage.
2. Kuqhathaniswa arresters, varistors abakwazi ukudamba ngesilinganiso esiphezulu voltage.

Ukwandisa izinga ngokungabi yisiphazamiso kuyadingeka ukwandisa ubukhulu izakhi, futhi lokhu kwakuhilela abakhiqizi abaningi.

Izincomo ukufakwa

Uma kukhona isidingo ukufaka varistor kugridi amandla, kufanele sikhumbule la maphuzu abalulekile:

• Kufanele ngaso sonke isikhathi khumbula ukuthi lo mkhiqizo ngeke zihlale phakade, futhi lapho kuyofika izimo ezinjalo eziyoholela ukuqhuma yayo. Ukuze ugweme lokhu, kufanele usebenzise izikrini zokuzivikela ekhethekile ongasebenzisa kuzo zonke varistor.
• Kufanele kuqashelwe ukuthi amadivayisi Flint lobuchwepheshe ziphansi e izici oxide zabo nozakwabo. Ngakho-ke kungcono usebenzise lolu hlobo varistor.

isiphetho

Varistor linendima ebalulekile ekusebenzeni izifunda eziningi zikagesi. Njengoba kushiwo ngaphambili, lolu hlobo Semiconductor resistors kusiza ekunciphiseni ukumelana ukusebenza nge voltage okwandayo noma yamanje. Ngenxa kwaloku basuke ukufakwa kumadivayisi amaningi kagesi. Lapho voltage izinhlanga varistor, injongo okuyinto siqondiswe ushintsho ukumelana, akusho aphule amadivaysi. Iphinde kuvimbela nokutubeka wiring. Ngakho, lezi zinto ukuqinisekisa ukuvikeleka ngesikhathi izinhlanga voltage inethiwekhi.