Varistor - ndichiyani? Varistors: mfundo zikugwira ntchito, mitundu ndi ntchito

Varistor - icho chiri, kumene ntchito, ndi zofunikira? Izi amafotokozera madera pakompyuta kawirikawiri ntchito, dzina lake sanali pa khutu. Tiyeni kukonza ichi ndi timudziwe bwino ntchito yake komanso kuti chipangizo.

zambiri

Iwo ali kutchinjiriza magetsi, Chofanana ndi voteji mwadzina. Chithunzi leni zingasiyane ku mtengo ongolankhula. Koma ntchitoyi anapereka mlandu kupatuka ndi yaing'ono ndipo mkati osiyanasiyana analola. Koma electrics zambiri amalephera chifukwa cha zimachitika voteji. Chotero anaitana kusintha mwadzidzidzi mu maonekedwe a ina, pamene kubwezeretsa mlingo wapachiyambi mkati mwa kanthawi kochepa. The nyemba akhoza kukhala mphezi ndi kusinthitsa. Kuti adziteteze kusinthasintha amenewa, ntchito zosiyanasiyana zipangizo, monga arresters vavu-mtundu, Zosefera, unyolo ndi zochitika zina zambiri. Koma kunapezeka kuti akhale varistor bwino kwambiri. Ndi chiyani icho? Chotero anaitana ogwira ndi otsika mtengo chodzitetezera ndi nyemba kuti zachokera pa resistors osalunjika michenga yopangira zida zamagetsi. Mfundo ntchito ndi losavuta: varistor ndi chikugwirizana mu kufanana kwa zida kutetezedwa mu njira yachibadwa, zimakhudzidwira ndi voteji opaleshoni chipangizo kutetezedwa. Pamene mwadzidzidzi zikachitika, iwo amayamba kugwira ntchito ngati insulator ndi. Mbali awo zimasiyanitsa ndi symmetrical komanso kumatanthauza sanali liniya panopa-voteji khalidwe.

zochita varistor

Pamene zimachitika zikachitika, ndi zida chifukwa cha makhalidwe nonlinearity msanga kumachepetsa kukana ake (Ohm kuti magawo) ndi shunts katundu. Choncho kutetezedwa, ndi mphamvu imatsala ankakhala moyo wotayirira monga kutentha. Pa njira imeneyi mungaigwiritse chitani varistor panopa amperes zikwi zingapo. Poganizira chipangizo pafupifupi inertialess pambuyo zimachitika chimatha, izo kachiwiri umakhala resistive chipangizo. Choncho, zinthu zachilendo, zilibe bwanji ntchito zida zamagetsi. Koma padzakhala nyemba za voteji oopsa, ndiye otsimikiza - iwo adzadula. Izi zipangitsa chitetezo cha ngakhale kutchinjiriza ofooka.

Chito otchuka

Ponena za varistor, izo ziri, ife sangaunyalanyaze zipangizo ku zimene iwo anapanga. Zipangizo Ambiri ntchito imene ipangidwa ntchito okusayidi nthaka. Ichi ndi chifukwa zifukwa zingapo:

1. kupanga kuphweka.
2. Nthaka ali ndi luso labwino kuyamwa nyemba mkulu-voteji.

iwo analengedwa ndi luso "ceramic", imene imakhudza kukanikiza likuomba, ntchito maelekitirodi ndi kutchinjiriza magetsi, msonkhanowo ndipo soldering zikhomo conformal zokutira. Chifukwa kuphweka kupanga kuti akhoza analenga ngakhale malamulo munthu.

chodetsa

Tili chidwi chokwanira linaperekedwa kwa kuphunzira zimene ndi varistor. Olemba pogwiritsa ndi zovuta, ndipo chotero kupeza chipangizo izo sizingakhoze kuoneka deta anaika pa nyumba ya. Onani zitsanzo izi: kumeneko CNR-06D400K. CNR - ndi dzina la mtundu, mu nkhani iyi tili ndi zitsulo okusayidi varistor. 06 - lili ndi awiri a 6 millimeters. D - kutsogolo kwa ife chimbale varistor. 400 - voteji ntchito. K - kalata limanena kuti n'zotheka kupatuka Kulolera zolakwa za 10%. Ngati ife kulankhula za makompyuta, ali varistors anapangidwa kuti 470V. Gwirizanani, kwambiri. Koma palibe varistor limodzi! Chodetsa zinthu zimenezi paliponse wopanga lalikulu mu njira yake, kotero malamulo chonse ndiponso yovomerezeka kuzindikira kumeneko. Choncho ndikofunikira ntchito kapena ntchito mavenda, kapena ntchito misonkhano ya atsogoleri.

chithunzi

Ngati ife sitikufuna zida unawotchedwa, nkofunika kwa ife varistor. Chikhazikitso taperekachi zikuwoneka ngati resistor wamba, koma pali zambiri oblique mzere ndi kalata U Akuti ntchito mwachindunji amadalira mlingo voteji. Koma mwina m'njira yosiyana kuyang'ana varistor. Chikhazikitso taperekachi ali ngati RU kwa iye, ndiyeno amasonyeza manambala. chiwerengero ndi chiwerengero siriyo, koma makalata amatchula dzina chipangizo: a resistor-varistor. Information angakhalenso mayina. Izi akhoza zimachitika mankhwala otchuka zoweta, amene chopangidwa mu fakitare "Patsogolo" mu Ukhta. varistor awo pa chiwembu akhoza kudzakhala zilembo A kuti G.

Chongani mchitidwe ntchito

Pano tili m'manja mwa varistor lapansi. Kodi kuonanso ngati ntchito? Muzu zonse zofunika kwa anayendera kunja. Muyenera mosamala kuyang'ana pa nyumba kugwazidwa, losweka, blackening kapena kuda mwaye. Ngati pali zopindika kunja, ndiye yekha zikusonyeza kuti mchitidwe wolowa m'malo kapena ayi konse. Ngati kuyenderako anapeza palibe mavuto, ndiye kuti mwakonzeka kuti aletse multimeter. Pankhaniyi, Tester ayenera kugwiritsa ntchito njira muyeso, kulimbikira pazipita. Ndi chophweka njira kuuza ngati wantchito varistor. Kodi kufufuza ngati ntchito, ife tadutsa kale yokutidwa, tiyeni tikambirane mmene kukatenga zinthu zofunika.

Akadakwanitsira mode opaleshoni

Chifukwa linearity mkulu chipangizo kupeza zoikamo yabwino chiwembu la - sichinthu chapafupi. Pakuti kuwerengetsera chaichi m'malo ovuta ambiri. Chofunika kwambiri pa nkhani iyi ndi ankaimba ndi apano opaleshoni, mtengo wa amene ayenera kukhala kochepa ndipo sichichititsa kutenthedwa chipangizo. Koma apa m'pofunika moyenera. Ndipotu, ngati inu ntchito otsika kwambiri opaleshoni masiku ano zingawonjezere voteji malire ndi unit adzachita ntchito yake zofunika. Monga "aulesi" chimake kuti titengere mfundo zikugwira ntchito voteji mwachindunji sadzakhala upambana nthawi 0,85 ndi varistor pakhomo. Komabe, njira imeneyi sichiri kwambiri kuchita. Ndipotu, ntchito yeniyeni MOV, ndipo zotsatira anakhumba, ndi kuchuluka kwa kuponderezedwa ayenera akanasankhidwa iliyonse yeniyeni.

Kusankha ndi unsembe

About chakuti varistors adzaikidwe kufanana kwa kutetezedwa zamagetsi, tinawalalikira. Kopita ambiri ankakonda ogwiritsa varistors ndi malo pambuyo chipangizo kusinthitsa (pamene kuonera katundu kutetezedwa). Chitsanzo cha njira yomalizidwa kungachititse mankhwala a ndaitchula "Patsogolo" mbewu wotchedwa "Apa-1." varistor lakonzedwa kuti wotetezedwa kwa gulu magetsi. Uyamiko kwa Iye, inu mungakhoze basi kugwiritsa atatu gawo katundu chitetezo chiwembu ndi pawiri la "nyenyezi" kapena "makona". Kapena Kapenanso kusankha kuteteza makhazikitsidwe magetsi 3, zomwe zimayendera ndi tinjira atatu gawo.

magawo

Ponena za varistor, izo ziri, sitingathe kunyalanyaza makhalidwe ake zimene zili zofunika mu ntchito yanu?

1. Gawo voteji. Kotero ife timachitcha phindu limene panopa 1 MA umayenda mwa chipangizo.
2. The pazipita chovomerezeka alternating voteji. Amenewa amanena za mtengo umene varistor ndi adamulowetsa ndipo akuyamba kukwaniritsa ntchito yake yoteteza.
3. The pazipita chovomerezeka mosalekeza voteji. Chimodzimodzi monga Baibulo m'mbuyomu. Koma mu nkhani iyi pogwira ntchito ndi panopa zonse.
4. The pazipita voteji malire. Ichi ndi phindu pa zimene varistor ungatithandizire popanda kuwononga. Monga ulamuliro, izo mwachindunji padera kwa makhalidwe osiyana panopa. Ngati inu upambana kuchuluka izi, varistor adzakhala osokoneza mu theka kapena anaswa zidutswa.
5. The pazipita odzipereka mphamvu. Zikusonyezedwa joules. Kodi phindu pazipita zimachitika mphamvu kuti akhoza ankakhala moyo wotayirira ndi varistor mu mawonekedwe a kutentha popanda kuopseza kuwononga chipangizo palokha.
6. Poyankha nthawi. chikhatho chimodzi ichi chimene chipangizo likupita ku mkhalidwe wina ndi mzake, ngati pazipita chovomerezeka voteji wakhala kuposa. Childs amayezedwa makumi nanoseconds.
7. Kulolerana. Kusintha mtengo umene Choyenereza varistor voteji imatengedwa yachibadwa. Nthawi zonse chimaonetsera kuchuluka a. Monga akhoza kumva kuchokera m'nkhani pamwamba, njirayi akusonyeza kalata kumapeto kwa kulemba.

ntchito

Tiyeni tione Mwachitsanzo, zopezera volts 220. + Chifukwa wokometsedwa zipangizo zimene zimachititsa voteji ndi 275-420V osiyanasiyana (koma pali zina zofunika luso, ife Sudzatikhudza). Monga mzere fyuluta ntchito atatu varistor. Sakuchitira malowedwe a nyemba ndi ziro-gawo dera. Koma chifukwa atatu a iwo? Nthawi zina zimachitika kuti uthenga Pepala malipoti a mavuto, chifukwa chimene anthu masauzande anataya zamagetsi awo. Izi zimachitika pamene, m'malo ziro ndi gawo-ndi-waya ndi funso chabe otsiriza. Pakuti zida ndi pafupifupi nthawi zonse kuphedwa. Koma pamaso pa varistor pa ziro bwinobwino kuteteza ndi zoterezi. Mu chitsanzo fanizo, mafoni mafoni. Choncho iwo zokula, ntchito kakang'ono varistors multilayer. Komanso, angapezeke mu zida Telecom ndi zamagetsi magalimoto.