https://stream.echo6.co/videos/watch/b379281d-e49c-47b8-93bd-a28a1ffd7cfa I saw some 3W GU10 LED lamps on ebay that were available in red, yellow, green and blue. I bought one of each along with some other lamps for fun. They look good, but the yellow one is notable for being surprisingly bright and richly coloured for a yellow LED lightsource. The traditional yellow Gallium Arsenide LEDs always tend to look a bit dull and washed out. The LEDs were also notable for appearing yellow coloured when unlit leading me to guess that they might actually be a Gallium Nitride lightsource stimulating yellow phosphors. In this video I pop the lid on the yellow lamp and test the forward voltage of one of the LEDs to see which technology it uses. Wed, 15 Apr 2026 11:16:48 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/b379281d-e49c-47b8-93bd-a28a1ffd7cfa All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.