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Yeah but how do i drive a mosfet with 3.3V? Or even 0.7V? Ok, lets say i use a +12V voltage just to power the mosfet how do i limit the voltage? With a npn the voltage cannot exceed the base voltage -0.7V (-1.4V for a darlington transistor)

Yeah, and if not i'll just buy another microcontroller... Tomorrow i'll remove the and gate. Ok, only Problem left is that i'm still missing a transistor with an amplification factor which is high enough. I think i'll just use an other method to get my reference voltage. If anything fails it...

Well the manual that came with my microcontroller said you cant put pwm to zero. Microcontroller is running at 5V and i want to run the driver at 3.3V to keep the power loss over the resistor as low as possible. I'm thinking about using a driver for the mosfet because I think the current might...

why "haha"? do you think it doesnt work? if so tell me why it should not work

Ok, i tried to improve the driver according to your feedback, this is what came out. Im still having the problem to decide which mosfet to use for pwm modulation, it has to be a logic level mosfet which is pretty fast. I'm also curious how clean the output of the driver will be. If i...

well, im using the relay because my microcontroller cant set its pwm output to 0, thats why i thought of using a relay to turn it off the diode D2 is a zener diode setting the output voltage. The maximum output voltage should be the zener voltage of D2 - 0.7V (T2) - 0.7V (R11) Edit: I will be...

Hey guys, I've bought a 8W 808nm c-mount laser diode and some protection goggles for a pretty cheap price, but i cannot find any driver suitable of outputting 8A at 2 volts as the datasheet of the diode says. As i always wanted to build electric devices on my own i just made this little...