Tvar žiaroviek

Medzi vlastnosťami žiaroviek, ktoré sú väčšinou uvádzané priamo v názve produktu, nájdete najčastejšie druh pätice (napr. E27) a výkon (napríklad 60 W). Niektorí výrobcovia dopĺňajú ešte jednu kombináciu písmen a čísel – tvar.

Tvary žiaroviek — Všetky bežné tvary žiaroviek majú ustálené označenie.

Ten sa skladá z písmena, ktoré označuje priamo tvar – viď nižšie, tvaru klasickej žiarovky napríklad patrí písmeno A.

Ďalej potom z čísla, ktoré označuje priemer takto tvarovanej žiarovky v milimetroch.

Najväčšia klasika medzi žiarovkami tak ponesie označenie A60, bude mať bežný tvar banky s priemerom 60 mm.

Výnimku tvoria žiarovky tvaru PAR a MR, využívané napríklad v bodových svetlách. Okrem niekoľkých písmen sa ich priemer udáva v osminách palca, žiarovka s označením PAR16 teda bude široká cca 51 mm – osmina palca je 3,175 mm.

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