Very similar cheap laser module as the last video but I swapped out the battery for a much lower capacity cell at the same voltage, improving the function of the laser with far less waste heat.
I also installed a threaded focusing lens for better burning tricks. The topology of the driver circuit is relatively efficient and consistent of a NPN power transistor and dual operational amplifier as voltage references for achieving constant current and power dissipation of 4.5W.
Technical datasheets: pdf1.alldatash...
pdf1.alldatash...
5.imimg.com/da...
Other info: en.wikipedia.o...
5 сен 2024
