News
09/10/2013 08:58
From Figure 1 it can be seen : 1) the color of the mixed light and is only able to measure at x0 LED Bulb corresponding to the theoretical absorbance value is taken over all ; 2 ) if the mixed light is not greater than the light measurement Yc, Yw the smaller , then all over the...
09/10/2013 08:58
Knowledge of linear algebra shows that when xc ≠ xw and yc ≠ yw equation has a unique solution when . It can be seen , given the expectations of color, luminosity values of the duty cycle is determined, and is unique. In this case, calculate the duty cycle and calculate the amount of light and...
09/10/2013 08:57
Instrumentation used SUV3000 UV-Vis radiation analyzers, the measurement process in a standard darkroom . Figure 3 shows the measurement results .
MR16
Illuminance values measured illuminance values and expectations of the average error of 15 lx, measured value and the desired color...
08/10/2013 10:04
LED light source dynamic luminous characters to form the appearance of text or logo, mounted MR16 on top of buildings or walls, use led as light source, use bright LED chip, the use of control systems, text or logo on the dynamic video control unique design of the traditional With...
08/10/2013 10:04
Production of white high brightness LED light intensity 1:2:0.38 ratio by mixing white, two kinds, LED Bulb the use of ultra-high InGan blue LED, the tube always add a little pomegranate as the main drill yttrium phosphor, it can in blue excitation produces yellow green, and this revealed a...
08/10/2013 10:04
3, LED light, long life
LED Lighting china
Incandescent, fluorescent, halogen is the use of electronic light field radiation emitting filament light easy to burn, heat deposition, the light attenuation characteristics, and the use of LED lights, small size, light weight, epoxy resin, high...
30/09/2013 09:27
When CS end has a size of VCS value, you should make the first stage op amp 's output increases, LED Lighting china so that the current I3 increases. Specific analysis , because the size of certain I4 and I5 , then the voltage drop on the resistor R4 must , CS terminal voltage increases after...
30/09/2013 09:21
The role of the error amplifier is sampled feedback voltage , outputs a control signal is then input LED Bulb to the PWM comparator to control the size of the peak current . LED work , due to process variations , each one on the LED forward voltage drop will not be the same , so...
30/09/2013 09:10
Where , C is the output terminal of the capacitor size , in the ON state of the main transistor parasitic capacitance.
MR16
2.4 PWM comparator
The PWM comparator compares the current sample after the slope compensation signal and the error amplifier compares the output control...
29/09/2013 08:40
Generally speaking: cast acrylic board size is limited, so a maximum of 2000mm * 3000mm; LED Downlight acrylic sheet extrusion plate can be supplied in the form of theoretically unlimited length. Acrylic extruded sheet can be made longer length seamless box signs; while cast acrylic...
