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[OM] Re: Power source for T28 modelling lights

Subject: [OM] Re: Power source for T28 modelling lights
From: Jan Steinman <Jan@xxxxxxxxxxxxxx>
Date: Tue, 3 Apr 2007 20:07:26 -0700

> From: Frank van Lindert <Frank.van@xxxxxxxxxxx>
>
> The lights will do just as well on AC as DC...

In fact, due to a phenomenon called "re-plating," incandescent bulbs  
will last longer on AC than DC. But this mostly applies to bulbs that  
are run "hot." As others have pointed out, the modeling lights in Oly  
flashes seem to be deliberately under-powered, to extend life, and the  
DC-AC life difference is probably negligible.

:::: Jan (running Leopard Beta, and don't have my signatures moved  
over yet) ::::




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