Paul C. Buff, Inc. Technical Forum

I have a quick question. I searched other forums and couldn't find an answer. Will the SLFA handle the higher switching voltage of an older Vivitar 283 hotshoe flash? Will it pass that higher voltage through the sync port possibly causing damage to a device plugged into it such as CyberSync / optical slave, etc? Or, will it isolate the higher voltage from the sync port?

Thanks for the help!

I am not aware of any voltage that would be harmful to the SLFA itself. It will pass any voltage through to the trigger or camera used to fire the flash. CyberSyncs are rated to 300V. I do not know the trigger voltage of the flash mentioned, but it can be verified with a multi meter. My understanding is the sync voltage of those units can fluctuate from unit to unit, and major changes happened between revisions.

Thanks for the response and sorry for the late reply ( I was away for a bit). OK. You confirmed my suspicion that the SLFA will just pass the voltage through rather than reduce it to protect more sensitive devices.

-b