I took apart a "one-way-camera" for the flash part and found a circuit very similar to the image. For a project I need to trigger the flash with a microcontroller (attiny25/45/85v, low voltage version, operates with 1.8-5v). To do that I simply need to bridge the charge switch on turn on and then trigger the flash by replacing the trigger mechanical switch with something else. I am considering several options for this and am hoping on input on what would be the easiest and cheapest option, as I need to produce many of these circuits.
What makes this tricky is that the flash uses more than 1000 volts to trigger and most transistors are not build for that kind of application. Relays have worked fine but especially low coil voltage ones are hard to get/expensive and im wondering if there is a good alternative.
Thank you for your input in advance.
PS: The whole circuit should ideally run on 2 AA batteries (=3v)