News
17/07/2013 09:09
this design requires 20mA 16V maximum output current and voltage. The specifications of the MR16 mobile phone screen brightness adjustment function with mobile phones in general idle time can gradually reduce the screen brightness. System processor is responsible for providing the...
16/07/2013 10:00
1 fin area arbitrarily set.
MR16 2 unreasonable fin arrangement, heat lamps without considering the arrangement of fins lamp is used, the impact effect of the play to the fins.
3. Emphasizes heat conduction part, ignoring convection links, although many manufacturers to consider a variety of...
16/07/2013 10:00
According luminous flux (lm) and radiant flux (watts) equivalent of the following relation: where, LED Bulb Km = 683 lm / w, is the flux scale, the scale is radiant flux. That 1W of radiant flux in the best case (blackbody radiation) may produce 683lm luminous flux. Therefore, even if...
16/07/2013 10:00
(1) of the LED lamp and the two systems are substantially the same pole costs, the main LED Downlight difference is the solar panels. Typically solar panels power is about three times the power LED lamps. If the LED is 100 watts, then requires the use of solar panels 300...
15/07/2013 08:54
while different for different batches of LED production plant for matching accuracy is poor. Figure MR16 4 (b) shows the use of the six white LED drive circuit, the six LED current range of 15.4 ~ 16.9mA, but the differences between the products Plant A smaller, while plants Plant A and...
15/07/2013 08:54
Figure 3 white LED four common power circuit
LED Bulb
Figure 4 six white LED test the relative accuracy of the regulator
Figure 3 (a) of the circuit shows how to use a voltage source converter with current limiting resistor to control white LED current, the...
15/07/2013 08:45
Figure 3 (d) above was used to stabilize the inductive step-up converter circuit of the white LED Downlight LED electric current, wherein the feedback voltage of the current detecting resistor can be power loss to a minimum. Since the white LED are connected in series, so...
12/07/2013 09:31
For other types of light sources can also be calculated using a similar method. However, based on LED Bulb the fluorescent lamps, compact fluorescent lamps (CCFL), and the LED lighting device, we must be considered in the calculation of loss and isolation ballast DC - AC constant...
12/07/2013 09:30
We use a common warm white LED lamp as a light source of the basic example. The LED indicator MR16 is rated as 3000K CCT, 350mA, 3.8V maximum forward voltage drop. LED lights are classified according to the brightness logo, here we choose the smallest part of 60lm @ 350mA. Under...
12/07/2013 09:28
If the drive for energy efficiency into account, then you can calculate the worst-case efficiency of LED Downlight 33.2lm / W. This result can meet the current Energy Star program requirements, close to the reflective CCFL lighting performance, but still four times higher than...
