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On Power Supplies

Posted by Peter Hiscocks on 1/13/2016 to Products

Are you starting to learn electronics? A power supply is an excellent starter project: the basics are very straightforward, and a power supply is reasonable to built and troubleshoot.  Even better, as your skills advance, there are some interesting - and not so obvious subtleties.

Integrating Sphere for Luminance Calibration

Posted by Peter Hiscocks on 1/13/2016 to Technical Papers

One of our projects is to measure the luminance (brightness) of various sources of light pollution, using a digital camera.  To do that, you need a calibrated source of luminance.  It turns out that a low-cost purpose-made light integrating sphere can provide this.  The linked paper describes the integrating sphere and provides some background information and theory.

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