Varistor: ntchito Mfundo makhalidwe utumiki. Kodi ndi varistor?

Otchedwa varistor michenga yopangira zida zamagetsi resistors, amene angathe kuchepetsa kulimbikira kwa nthawi 10 kufunika koyamba ndi kuwonjezeka voteji. Mwachitsanzo, ngati resistor ali ndi kulimbikira megohms 1000, ntchito chinthu ichi 1,000 ohms. Choncho, kukana amachepetsa pamene voteji kumawonjezera.

Monga ulamuliro, iwo ndi zitsulo okusayidi kapena okusayidi nthaka. Ngati inu mukuyang'ana pa makhalidwe panopa-voteji wa varistor, zikhonza kudziŵika kuti ali sanali liniya symmetrical mawonekedwe, mwachitsanzo, akhoza ntchito osati pa zonse koma voteji variable. Amenewa amafotokozera ndi amamangiriridwa zikufanana ndi katundu. Kodi ndi varistor? Pamene voteji mu mains panopa akudutsa osati mwa zida, womwe varistor. Chotero chipangizo amatha kugawira mphamvu monga kutentha. mbali yake yaikulu - ndi zingagwiritsidwenso ntchito ndi kusintha nthawi ndiyo kukana ali chithunzi koyamba pa imfa mphamvu.

Mfundo ya varistor ndi chiyani? item palibe wosiyana ndi resistor wamba, ndiye pa ntchito yachibadwa ya zamagetsi liri ndi kukana ohmic. Choncho, tiyeni tione zimene varistor mfundo.

The chizindikiro cha kukana wa si mkulu ndipo akhoza kufika 100,000 ohms. Pamene voteji ndi anatembenuka, izo zikhoza kuchepetsedwa mwamsanga pamene akufunika kutero mu mlingo wa chitetezo. Fundo kugwa kuchokera 100,000 ohms kwa 100. Ngati kufunika imagwera malire otsika, kapena ndi wofanana ndi ziro, pakhoza kukhala lalifupi dera. Mu lama fuyusi uyu, amene ali ndi dera magetsi pamaso pa varistor kwalephera. Kenako, dera magetsi yotsekedwa ndi voteji ndi wazimitsa kwathunthu.

Monga tanenera poyamba, pakalibe wa varistor voteji kungathandizire achire ndi ntchito mu mawonekedwe omwewo. Chifukwa ntchito zake mukufuna m'malo ndi lama fuyusi lotengeka. Komanso pazipangizo adzakhala liziyenda bwino. The varistor chikugwirizana kufanana kwa magetsi. Taganizirani zimene ali varistor mfundo ya ntchito chitsanzo cha kompyuta wamba munthu. Popeza ali malo awiri, ubwenzi wa ikuchitika mu kufanana ndi ziro gawo.

Kodi katunduyo?

Zimenezi, monga varistor, amene ali zithunzi m'nkhani ino, zikuwoneka ngati resistor wamba, ndiko, ndi amakona anayi mu mawonekedwe. Koma ali kusiyana yaing'ono. Mkati mwa izo zimayendera opendekera, mapeto a amene ali yokhota kumapeto.

Pakukhala varistor ndi?

Lero tikhoza kukumana mayina osiyanasiyana zipangizozi. Aliyense wopanga kulandira anapereka yake. Chodetsa amasiyana, chifukwa makhalidwe luso varistors amadziŵika Chrixitu. Zitsanzo ndi zinthu monga voteji kololeka kapena mlingo panopa akufuna.

Panopa aliyense wopanga amakhazikitsa chizindikiro chake pa mitundu ya zipangizo. Ichi ndi chifukwa chakuti zipangizo chopangidwa ndi specifications osiyana. Mwachitsanzo, pazipita chovomerezeka voteji kapena panopa zofunika mlingo kugwira ntchito. Wotchuka kwambiri chodetsa - CNR, amene anaphatikiza kuti lakuti monga 07D390K. Kodi izi zikutanthauza chiyani? Choncho, zoti CNR limasonyeza mtundu chipangizo. Mu nkhani iyi, uyenderere suppressor ndi okusayidi zitsulo.

Komanso, 07 - chipangizo kukula kwa m'mimba mwake kuti ndi wofanana ndi 7 mm. D - chipangizo chimbale, ndi 390 - pazipita voteji phindu.

Magawo waukulu varistors

magawo njirazi ndi izi:

• voteji ponseponse;
• mlingo pazipita AC ndi DC;
• pachimake mphamvu mayamwidwe;
• zotheka zolakwika;
• ntchito katunduyo.

diagnostics

Kuyesa chipangizo ichi pakompyuta, kugwiritsa ntchito zipangizo zina zapadera, ndilo lotchedwa Tester. Choncho, mayeso kukhala ndi varistor, mfundo ya ndiko kusintha magawo kukana ndi chipangizo mayeso. Pamaso isanayambike ake, muyenera kuyatsa chipangizo ndi kusinthana mu mode kukana. Only ndiye makina amakumana zofunika zofunikira luso, ndi mtengo kukana adzakhala yaikulu.

Pamaso wozengereza mayesero adziŵe kaye luso chipangizo. Chinthu choyamba kuyang'ana maonekedwe ake. The chida ayenera kukhala omasuka ming'alu, komanso zizindikiro kuti atenthedwa. Sayenera kumwedwa ndi zida anayendera mosasamala, monga kulephera iliyonse yaing'ono kungachititse kuti zinthu zosasangalatsa.

Varistors: ntchito

makina onga mbali yofunika kwambiri mu moyo wa munthu. Kuchokera pamwamba tingathe kunena kuti uyenderere suppressor, mfundo zomwe ndi kuteteza zamagetsi ku voteji wapatali maukonde, kuthandiza kuteteza za magetsi ambiri magetsi ndi Kulumikizana kupulumutsa okhulupirika. Kudzachita ndicho dera magetsi zipangizo zosiyanasiyana. Mwachitsanzo, zidzachitika mu kuyamba-mmwamba zinthu kuyatsa, amene amatchedwanso ballasts. Komanso madera magetsi anaika mu varistors wapadera, ntchito chimene chili chofunika kuti ziziyenda bwino mu voteji ndipo panopa. zipangizo Zimenezi ntchito mizere mphamvu. Koma pali iwo amatchedwa arresters, ndi opaleshoni voteji wa volts zoposa zikwi makumi awiri.

Varistors ungatithandizire mu voteji osiyanasiyana lalikulu limene limayamba ndi zochepa kwambiri pa 3 V, ndipo itha 200 V. Pa mchitidwe panopa, apa osiyanasiyana kuchokera 0,1 1 A. Chiwerengerochi panopa chomveka okha otsika voteji zida luso .

lothandiza varistors

Mtundu wa zida ali ndi makhalidwe ambiri abwino, ngati Tikayerekeza ndi zipangizo zina, monga funde arrester. Phindu zofunika monga:

• Mkulu-liwiro ntchito amafotokozera za;
• n'zotheka kutsatira kusiyana popanda inertia ndi woyamba;
• n'zotheka ntchito pa mlingo voteji mu osiyanasiyana kuchokera 12 mpaka 1800;
• yaitali moyo utumiki;
• mtengo wotsika chifukwa kuphweka ntchito yomanga.

zoyipa

Pamodzi ndi chiwerengero lalikulu ubwino pa zipangizo zina, palinso kuipa kwambiri, lomwe muli.

1. Varistors ndi yaikulu wodzilamulira capacitance, kumene kumakhudza ntchito ya maukonde magetsi. chigawo amenewa kungakhale mu osiyanasiyana kuchokera 80 3000 PF. Izo zimatengera zinthu zambiri kapangidwe ndi maonekedwe a varistor, ndi mtengo pazipita mlingo voteji. Dziwani kuti nthawi zina, drawback izi zazikulu akhoza kukhala ndi mwayi waukulu. Koma zimenezi n'zotheka ali osowa kwambiri, mwachitsanzo, ngati inu ntchito varistor mu Zosefera lapansi. Imeneyi, mphamvu yaikulu likhale pakamwapo mu mains voteji.
2. Poyerekeza ndi arresters, varistors sangathe dissipate pa mlingo pazipita voteji.

Kwa mlingo wa chododometsa n'kofunika kuonjezera kukula kwa mphepo, ndipo izi zimafunika alimi ambiri.

Malangizo kwa unsembe

Ngati pali kufunika monga varistor mu mphamvu gululi, muyenera kukumbukira mfundo izi zofunika:

• Nthawi zonse muyenera kukumbukira kuti mankhwala sadzakhalapo mpaka kalekale, ndipo kudzabwera zinthu zimenezi zimene zingakuthandizeni kuti kuphulika ake. Popewa izi, muyenera kugwiritsa zowonetsera wapadera woteteza zimene mungathe kuika varistor onse.
• Tikumbukenso kuti mwala zipangizo luso amakhala otsika mu makhalidwe okusayidi omwe ankasonyeza. Choncho ndi bwino kugwiritsa ntchito mtundu wa varistor.

Pomaliza

Varistor amagwira ntchito yofunika kwambiri mu ntchito kwa madera ambiri magetsi. Monga tanenera poyamba, mtundu wa resistors michenga yopangira zida zamagetsi akutumikira kuchepetsa kukana ntchito ndi kuwonjezeka voteji kapena panopa. Chifukwa kuti zimenezi iwo amene anaika mu zipangizo zambiri zamagetsi. Pamene mafuko varistor voteji, cholinga chimene walangizidwa kusintha mu kukana, ambike zipangizo. Komanso kumathandiza amatopa Kulumikizana. Choncho, zinthu izi Kuona kuti pali kutetezedwa ku mitundu voteji maukonde.