I recently upgraded by Chinese Blue 50w laser with a bundle from Cloudray. Figured if they are bundled together then they’d best work together. I’m working with Lightburn and I don’t see much difference between the power settings when I use the laser. The ammeter is showing an overall difference (ranging up to 25a). Even at the lowest setting where I can get it to fire (about 9% power), it seems like it’s more powerful than it should be. Here’s a few test that I’ve done…
I was wondering if there were any adjustments I needed to make since it was a 60w power supply that came with the 50w tube.
A 60W Laser Power supply (lps) is not going to give you more power out of a 50W tube at the same mA reading… The tube is always the limiting factor.
CO2 machines actually have a pretty good efficiency, but the lps has little to nothing to do with the tubes efficiency, if it’s working properly.
Unfortunately this is the kind of advice you receive… I would have expected better from Cloud Ray.
The advantage of a larger lps is it’s response time. A larger lps has to raise it’s voltage quicker for a larger tube to have a response of 90% voltage <=0.1mS.
The lps has an internal pot to adjust the maximum current. You should set your machine at 50% pwm and adjust the pot to read 50% current. That will sync you up with the software so 50% power is just that.
I was advised by Russ Sadler to use this method to setup the lps. Cloud Ray builds a Russ Spec machine, so I trust him… they apparently do also.
As a tube gets larger it’s not uncommon for it to start lasing at a higher mA reading. Most manufacturers say a 60W tube has a minimum output power of 12W, indicating a minimum of 20% power. Most of my tubes have lased around 9mA at best.