Safe flash trigger voltage?

I know Nikon only recommends a max. trigger voltage of 5 volts, but I'm looking for a consensus on what is actually safe.

I've been using a Sunpak 433d for a while with a 7v trigger and everything seems fine.

I just inherited a Quantaray 7500A flash, and the trigger voltage measures 17 volts . It seems to work fine with the 950, but I'm concerned about potential long term damage.

Has anyone had any experience with other flashes triggering at voltages this high??

Nikon has said that anything under 250V is OK. Your 7500A isn't going to hurt your camera.

Phil Weinberger said:

I know Nikon only recommends a max. trigger voltage of 5 volts, but I'm
looking for a consensus on what is actually safe.

I've been using a Sunpak 433d for a while with a 7v trigger and
everything seems fine.

I just inherited a Quantaray 7500A flash, and the trigger voltage
measures 17 volts . It seems to work fine with the 950, but I'm
concerned about potential long term damage.

Has anyone had any experience with other flashes triggering at voltages
this high??

Click to expand...

Thank you Dan. When did Nikon change the official party line on this?

Daniel Lauring said:

Phil Weinberger said:

I know Nikon only recommends a max. trigger voltage of 5 volts, but I'm
looking for a consensus on what is actually safe.

I've been using a Sunpak 433d for a while with a 7v trigger and
everything seems fine.

I just inherited a Quantaray 7500A flash, and the trigger voltage
measures 17 volts . It seems to work fine with the 950, but I'm
concerned about potential long term damage.

Has anyone had any experience with other flashes triggering at voltages
this high??

Click to expand...

Click to expand...

Some time after the 990 was released the fessed up to this on their user support forum. The posting is probably still archived there.

Phil Weinberger said:

Daniel Lauring said:

Phil Weinberger said:

I know Nikon only recommends a max. trigger voltage of 5 volts, but I'm
looking for a consensus on what is actually safe.

I've been using a Sunpak 433d for a while with a 7v trigger and
everything seems fine.

I just inherited a Quantaray 7500A flash, and the trigger voltage
measures 17 volts . It seems to work fine with the 950, but I'm
concerned about potential long term damage.

Has anyone had any experience with other flashes triggering at voltages
this high??

Click to expand...

Click to expand...

Click to expand...

Daniel Lauring said:

Some time after the 990 was released the fessed up to this on their user
support forum. The posting is probably still archived there.

Click to expand...

any chance of sharing the link for this?

michael

http://www.nikontechusa.com

michael said:

Daniel Lauring said:

Some time after the 990 was released the fessed up to this on their user
support forum. The posting is probably still archived there.

Click to expand...

any chance of sharing the link for this?

michael

Click to expand...

Just to narrow this down a little it's in an article with "answer ID" of 30. At the very bottom it says:

"Warning: Negative voltages or voltages over 250 V applied to the camera's sync terminal could not only prevent normal operation, but may damage the sync circuit of the camera or flash. When a third party flash is used on a Nikon Coolpix when the shutter is fired the flash will fire as well. The flash is not controlled in any other means by the camera."

That "negative voltages" comment could be important to people (like myself) who hook up to studio strobes that are synch'd off a "household" connector. It's possible to plug some household cords in backwards.

MK said:

michael said:

Daniel Lauring said:

Some time after the 990 was released the fessed up to this on their user
support forum. The posting is probably still archived there.

Click to expand...

any chance of sharing the link for this?

michael

Click to expand...

Click to expand...

--

Member said:

Member said:

Member said:

==> PStJTT

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