We replaced a lamp pointer wuth a laser line pointer on a welding machine
https://www.conrad.be/nl/p/laserfuchs-lasermodule-lijn-rood-5-mw-lfl650-5-12x45-90-f250-nt-817715.html
Lamp had a supply of 6V AC.
We made a small power supply to convert 6V AC to 5V DC using a 7805 stabeliser IC
