Got into the big box of stuff and pulled out two electric shutters. One is from a long-roll MF camera, the other from a military lens.
How in the world can I find out what kind of juice they need? I have an ohm meter, but that's all. Can I just try a 9V battery, then a 12V motorcycle battery, then two 12V batteries in series? Will DC hurt an AC circuit?
Help me before I let the smoke out of these things.