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Total: 5 results found.

What kind of lighting is best for people with retinal diseases like macular degeneration? Researchers tell us that ultraviolet (UV) and blue light rays may be harmful to those of us with retinal disease, ...
Saturday, 22 August 2009
2. DIY LED LAMP 220 VAC
(Do it yourself/Household)
วันนี้เราจะมา DIY LED LAMP 220 VAC ง่ายๆก็คือหลอดไฟบ้านแบบที่ใช้หลอด LED แทน โดยวงจรการทำงานกับอุปกรณ์ ก็มีีเพียง LED, R, แล้วก็ C แค่นั้นเอง แต่เนื่องจากวงจรต่อตรงกับไฟ 220V ซึ่งมีอันตรายมากถึงชีวิต จึงควรใช้ความระมัดระวังตอนทำการทดลอง ...
Thursday, 11 June 2009
3. 150W MP3 Car Amplifier
(MyBlog/Electronics)
... : < 0.02% Low 1/f noise corner: 50 Hz Fast settling time to 0.01%: 2 us Power Amplifier : When the amplifier is installed behind in the suitcase, we shall need a switch works stop. The ...
Monday, 08 September 2008
4. Solar garden light
(MyBlog/Electronics)
... circiut is not particularly efficient since the battery must charge through a plain diode.     Another Reverse engineered circuit diagram of a mass produced solar LED light. This light also automatically ...
Saturday, 13 October 2007
5. White LED Drive Circuit
(MyBlog/Electronics)
White LED Drive Circuit How do you get 3.5 volts to drive a white [[LED]] when you only have a 1.5v battery? (With special thanks to Dave Eselius for keeping this project alive until it was finished.) ...
Tuesday, 17 July 2007