Laser Diode Power Supply Circuit Diagram. This circuit is suitable for constant and continuous glowing of laser diode. 12 volt supply for he ne laser.
Too much current and the laser diode will blow. If we directly connect it to the supply due to more current it will damage. Too little current and the laser diode will not have sufficient power to turn on and operate.
As the basic of this laser diode driver this circuit uses a howland current pump with a current booster.
If current is low then it will not operate because of not having sufficient power to start. If current is low then it will not operate because of not having sufficient power to start. A laser diode driver circuit is a circuit which is used to limit the current and then supplies to the laser diode so it can work properly. Laser diode mine is red you could buy any color it hardly matters 10 microfarad 16v capacitor protects laser diode from immediate power supply especially when switching on off 1n4007 rectifier diode protects laser diode if batteries are inserted the wrong way 2 x 10ohm resistors in parallel sets the maximum voltage and current the laser diode will get 100ohm variable resistor allows.
