Alex Zabrovsky wrote:
Peter, can you please clarify ? Basically, the flash requires 4xAA set which provides 6V in the case of AA or 4.8V for rechargeable (based on fresh set of the batteries). However, you're talking about simulating one 1.5 V cell instead which is apparently enough in the case the unit is powered by external power pack. According to the manual, 550EX powers its electronics circuitry by the cells even if there is external power pack which supplies the energy for the tube. I would infer from your message, that 1.5V is enough to power the control electronics of the flash while the main power is provided by the power pack. ---------------------------------------------------------------------------- ------------------- Alex Z, What I meant was that you use 3 AA batteries and 1 dummy cell (Quantum calls this an Energy Saver) so you have 4.5V in use. From Quantum literature: "Many Flashes need internal batteries to operate the dedicated functions. The Energy Saver is recommended to allow those flashes to work more efficiently, prolonging the life of the alkaline batteries." You can check out the FAQs on their website for more information, www.qtm.com Or specific to Flash use with Turbo batteries http://www.qtm.com/home/manuals/qtb_cbl_p119-7b.pdf Peter K * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
