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?
Using a 3D printer, CNC router, and existing powertrain components, a team of engineers is building an electric car from scratch on the floor of the International Manufacturing Technology Show in Chicago this week.
In November, a European space probe will try to land on the surface of a comet moving at about 84,000 mph and rotating with a period of 12.7 hours. Many factors make positioning the probe for the landing an engineering challenge.
NinjaFlex flexible 3D printing filament made from thermoplastic elastomers is available in a growing assortment of colors, most recently gold and silver. It's flexible and harder than you'd expect: around 85A (Shore A).
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