Laser Diode Driver Circuit. Therefore a driver circuit is needed to give precisely the correct range of current needed so that our diode will operate. A cheap laser diode is the first thing you need to make your very own high powered laser capable of burning paper 1000s of laser diodes have died due to the lack of proper drivers a laser diode is current hungry it will take all it can get.
Since it is 5 watt so the current for the laser will be 5 3 7 1 35 amps as per this current you will have to use a r3 resistor with a value 0 7 1 35 0 5 ohms 1 watt. Quick look at a laser driver circuit. Laser diode driver circuit normally laser pointers are operated with 3v or 3 7v v dc supply.
A simple twenty minute project that lights up a rainy day parts required 1x 2n2907 pnp bipolar transistor1x 1k resistor1x 220 ohm resistor1x 5 1v zener diode.
Project built using lt1800 precision op amp. These are by no means standards just a generalization based on the author s experience in the laser diode controller world. You can adjust the output of the circuit to precisely 3 7v. A simple twenty minute project that lights up a rainy day parts required 1x 2n2907 pnp bipolar transistor1x 1k resistor1x 220 ohm resistor1x 5 1v zener diode.
