Power Diode

I have a laser diode from a laser pointer and I want to, but I have no idea how. Can anyone help?

You must know the current required and, depending on the circuit you use, the required voltage.

You can use a transistor to give the right present, but this requires knowledge of electrical engineering. This method requires that the necessary power.

Otherwise, you can use a resistor to regulate current with a voltage drop of the diode. This method must know the voltage and current.

Search Google for the sample schemes and so on.