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Correlated color temperature (or CCT) is an integral aspect of lighting design that TLP must take into account with every project. It is measured in Kelvin degrees and corresponds to the color of the light a lamp puts out.  Warm color temperatures typically used in architectural lighting usually range from 2700K to 3500K.  CCTs below 2700K start to become qualified as amber-colored, and are used in more specialty applications.   Cool color temperatures range from 4000K up to around 7000K. Color temperature preference in lighting design varies depending on the application as well as between geographical locations.  Asian societies tend to prefer higher CCTs in residences, restaurants, and stores; whereas warmer color temperatures are typically more desirable in the same applications in Western society.  Warm CCTs give us a feeling of coziness.  Cooler color temperatures start to come into play in hospitals and some offices, where alertness and attention to...

Only a few years ago, the choice of LED s was limited to IR, red, yellow, and green. The LED manufacturers have been busy extending the spectrum, and filling in the gaps. The latest generation of organic LED s (OLEDs) has added some dazzling new colors to the spectrum. This circuit uses a set of 13 differently colored LED s to generate a full color spectrum. The photo does not fully represent the colors generated due to camera limitations. The real-world display is very eye-catching. If you want to "trick out" your PC, this circuit is for you. Forget about those boring blue PC light displays. Simple 13 Color LED Rainbow Circuit Diagram Specifications: Operating Voltage: 6-12V DC Operating Current: 145ma at 12V DC Theory: The LM2940T-5.0 low dropout voltage regulator converts the 6-12V DC input power to regulated 5 Volts. It was chosen over a standard 7805 regulator so that the circuit could maintain regulation while operating on a 6V battery. The 1N4001 diode protects the ci...

Schematic diagram of switching power supply for color television , which can used on a particular color TV, how it works using the switching transformer and switching transistors. At first voltage AC220V entry through the capacitor and resistor, and then immediately rectified AC voltage by 4 diodes and capacitor given on each diode. After a DC voltage then passes through a capacitor elco in parallel , and into the circuit and the voltage is lowered by the switching transformer. After the voltage is lowered and then was rectified and filtered again in the after circuit, the output voltage is set up on their own. For output +5V and +12V using ic stabilization 7805 and 7812. To use circuit switching power supply can be used on the same output voltage. If the circuit is working you should never ever touch the live area , because of the high-voltage section. And if the circuit has stopped working , do not forget to remove the voltage on the capacitor electrolyte, by linking the two legs to ...