time delay off circuit

Added D2 to protect the MOSFET when the solenoid turns off, although it probably isn't needed since the driver doesn't turn off quickly. For another couple of pennies you may as well add it in. I don't know what kind of parts you have at your disposal, so select a MOSFET to handle the 2.5A current, you can search for one on mouser.com or digikey.com if you're able to buy parts that way, or find one from whatever sources you have available over there. The 2.5A is just a momentary peak current, so you could get away with a smaller rating since it's not on very long, and it won't heat up much from it. This provides a momentary (-) pulse to the strong pull in coil and then shuts it back off, leaving the hold coil to keep the shutter open until you turn off the high beam switch again.

Friend, i build the circuit bud not work... I use Mosfet IRFZ44, changing values of the capacitor and resistor, but not work. No momentary output!

The momentary output is a ground connection- how are you trying to test it? If you put a test load like a lamp across the "High Beam Solenoid" and the "Momentary" outputs, then connect 12V to between the "High Beam Sw Control" and "Ground", you should see it light up briefly and then go out. What did you change the values to? You can test if you have your transistor and circuit connected correctly if you jumper across the cap (shorting it out) and apply your voltage input, your test light should light up for as long as you keep it applied. If it doesn't, you may have something hooked up wrong or a bad component.

not working...

zmedak5 wrote: That little circuit board is easy to buy for you, not for me, i am for Europe/Croatia and that guy is USA (delivery time 30 days, i need that driver now...)

Even through you needed it in January, if you order it today it'd might be fastest way for you to get it done. Or maybe you can find someone over there that could wire it up for you-

Friend you were wright. I bought set of MOSFETs with fabric mistake. I use another one and everything works fine. Thanks

Good to hear- nice job fitting it right onto the board. The MOSFET is a bit bigger than you need for this, but it's fine.