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Hi, I recently got an adjustable laser driver and laser diodes for Christmas. However, the lowest voltage I can get is 10vdc and the laser I am working with is 4.6 volts. I heard something about setting the current and the voltage is dependent on the draw, but I don't just want to plug it in...

Hi, I'm somewhat new to electronics and I wanted to set up a Nichia Nubm31. The picture, however, does not seem to make sense to me. Is this picture saying that I have to connect the pins to themselves with the input and output pins being connected regularly? I have been looking online for...