Voltage adapter

High voltage on flash hot shoe? An insert between camera and OLD flashgun.

Step 1 Circuit

Well, it is not new idea. It is not a patent.
It is  common principle how a thyristor works.

Comments

[justmelol]

would using an scr thyresister work as well, i use it on my sound switch

[Phil B]

It would be great to have an easy, reliable circuit that works on all digital  cameras that use a pre-flash or series of pre-flashes so a slave strobe would fire when the shutter is open, not when the pre-flashes fire.  I found one someone posted on the Internet, but it did not work for me.

Thank you for a good Instructable.