Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

Laser Pointer Store

Review of "Custom Ordered" 654nm LaserGlow 5mW unit


Well-known member
Sep 12, 2007
...but it's not possible with all lasers to know the inside info ie driver
(speaking in second person "you," not one person specifically)...

You can infer a lot about the driver using a bench power supply to vary the voltage and see how the current varies with the voltage input. You could even do this with a battery and voltage regulator. Many people already have lm317s lying around they can use, so that's free or $1 online. Used bench supplies can be found for $50 on ebay if you want to get fancy and multimeters are <$10. Micrometers for checking beam sizes are <$13 or you can even use a ruler. IR thermometers for checking case temperature are <$5.

If you're spending hundreds or thousands on pointers, but refuse to buy standard, inexpensive, and incredibly useful lab equipment, maybe you're not the kind of person we want to see reviews from.
Last edited: