Varavirtalähteet

Varavirtalähde eli powerbank on yksi tärkeimmistä lisätarvikkeista älypuhelimelle. Meiltä löytyy laaja valikoima eri kokoisia varavirtalähteitä jokaiseen käyttötarkoitukseen. Osta varavirtalähde esimerkiksi matkalle, kouluun, töihin tai mökille. 

  1. Usein haettua:
  2. Varavirtalähteet aurinkokennolla
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Varavirtalähde ja UPS – suojaa laitteesi sähköhäiriöiltä

Varavirtalähde eli UPS (Uninterruptible Power Supply) pitää tietokoneesi, verkkolaitteesi tai muun elektroniikan toiminnassa silloinkin, kun sähkönsyötössä ilmenee katkoksia tai jännitteenvaihteluita. UPS-laite reagoi sähköhäiriöön välittömästi ja siirtyy akkuvirralle, jolloin käynnissä olevat ohjelmat ja tallentamattomat tiedostot pysyvät turvassa. Varavirtalähde suojaa laitteita myös ylijännitteeltä ja muita sähköverkon häiriöiltä, jotka voivat vahingoittaa herkkää elektroniikkaa.

Mihin varavirtalähdettä tarvitaan?

UPS-laite on erityisen hyödyllinen tilanteissa, joissa sähkökatko voi aiheuttaa merkittävää haittaa. Kotitoimistossa varavirtalähde antaa riittävästi aikaa tallentaa työn alla olevat tiedostot ja sammuttaa tietokone hallitusti. Palvelimille ja verkkolaitteille UPS on käytännössä välttämätön, sillä äkillinen sähkökatkos voi johtaa tietojen menetykseen tai laitevaurioihin. Varavirtalähteitä käytetään myös valvontakameroiden, reitittimien ja muiden jatkuvaa virransaantia vaativien laitteiden yhteydessä.

Miten valita sopiva UPS-laite?

UPS-laitteen valinnassa keskeisimmät tekijät ovat teho ja varavirran kesto. Teho ilmoitetaan yleensä volttiampeereina (VA) tai watteina (W), ja se kertoo, kuinka paljon laitteistoa UPS pystyy syöttämään samanaikaisesti. Varavirran kesto vaihtelee mallista riippuen muutamista minuuteista pidempiin aikoihin. Kotikäyttöön riittää usein pienempi malli, kun taas palvelinympäristöihin kannattaa valita tehokkaampi varavirtalähde pidemmällä toiminta-ajalla. Huomioi myös liitäntöjen määrä, sillä useampaan laitteeseen tarvitset riittävästi suojattuja pistorasioita.

Varavirtalähteet Verkkokauppa.comilta

Verkkokauppa.comin valikoimasta löydät varavirtalähteet ja UPS-laitteet kotikäyttöön, toimistoihin sekä vaativampiin IT-ympäristöihin tunnetuilta valmistajilta. Tilaa varavirtalähde edulliseen hintaan ja nopealla toimituksella – tutustu valikoimaan ja löydä tarpeisiisi sopiva malli!

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