walter hofmann
04-05-2012, 5:52 AM
Hi all
I use a converted K40 40W chinese laser engraver converted with PWM laser powersupply and the thunderlaser DF211 DSP. I also have a mA meter to measure the current.
now I just discovered that for instance with a powersetting of 30% the curent by engraving goes higher with the distance also if only 1 inch is engraved the current is only 5mA what would be after my calculation the right current, but if the distance goes higher like 2 inches the current goes to 8mA if the distance then goes mayby to 5 inch the current goes even to 12mA.
does anybody know if this is normal or what could it be.
thanks
walt
I use a converted K40 40W chinese laser engraver converted with PWM laser powersupply and the thunderlaser DF211 DSP. I also have a mA meter to measure the current.
now I just discovered that for instance with a powersetting of 30% the curent by engraving goes higher with the distance also if only 1 inch is engraved the current is only 5mA what would be after my calculation the right current, but if the distance goes higher like 2 inches the current goes to 8mA if the distance then goes mayby to 5 inch the current goes even to 12mA.
does anybody know if this is normal or what could it be.
thanks
walt