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I recently bought an IR diode with high beam divergence (12 x 28 degrees rectangular). Unfortunately, the module I own has a focal length of about two inches and a lens diameter of 1 inch. This means that about half of the light is not focused and instead scatters around inside the module. I...

After researching for some time, I found that I need a step-down regulator without much heat loss. I will be using a lithium ion battery (6V,9v,12v, depending on the driver) Laser can take a maximum of 4.8A 1.8V. Can anyone suggest a driver that requires minimal/no heatsinks and can allow...

I'm building a laser that runs in 1 -5 second pulses in a semiautomatic fashion. Goals---------------------------------------------------------- 1. 1000-5000mW for power 2. above power at a range of a few (<10) meters 3. relatively small size (nothing should be more than 4cm x 4cm in width) 4...