Light emitting diodes are becomming very popular these days people are using them instead of other lights because they are cost effective .Because leds are connected to the AC Supply it produces ripples at the outer end which results in flickering.Any light source which is connected to AC supply results in flickers.
However flickering can be reduced with different methods one method is to use high frequency switching supplies, which helps to reduce the AC component of the main supply and reduces the flickers but not all flickers are avoidable .Remaining flickers can be removed by attenuating g the AC component at the output
This approach may well shorten the lifetime of the string of LED's. The LED's are brighter because the duty cycle has increased from about .5 too near 1, the average current has increased by a factor of 2 and device (LED) heating has certainly increased. It appears in the video that one of the LED's in the demo string of white LED's has been replaced with a red LED. Was this due to failure of the white LED operating under the more stringent conditions?
The 100% solar-powered airplane Solar Impulse 2 is prepping for its upcoming flight, becoming the first plane to fly around the world without using fuel. It's able to do so because of above-average performance by all of the technologies that go into it, especially materials.
With major product releases coming from big names like Sony, Microsoft, and Samsung, and big investments by companies like Facebook, 2015 could be the year that virtual reality (VR) and augmented reality (AR) finally pop. Here's take a look back at some of the technologies that got us here (for better and worse).
Good engineering designs are those that work in the real world; bad designs are those that don’t. If we agree to set our egos aside and let the real world be our guide, we can resolve nearly any disagreement.
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