The left side is the referenced module. The three on the right are products.
Sanmei Electric exhibited the LED lighting fixture power module at the "MITSUMI SHOW 2008" and demonstrated the lighting and dimming. The power modules on display include "PSU-501/502/503BS" products supporting AC 100/120V input and prototypes supporting AC 220/240V input. They are equipped with power factor improvement circuits to reduce the generation of higher harmonics. The life of the power module ensures that the LED lighting fixtures are exceeded. The photoelectric conversion efficiency of the power module depends on the dimming condition, which is approximately 70-80%.
The PSU-501/502/503BS will begin mass production in April 2008. The output parameters of the three products are different. The output voltage and output current of PSU-501BS are DC 44V and 120mA maximum respectively; PSU-502BS is 12V and 300mA; PSU-503BS is 12V and 350mA. It is mainly used for spotlights, lamps that illuminate products in stores, and the like. In the demonstration, the brightness changes in real time depending on the position of the knob. “The brightness and current input of the LED change non-linearly. In order to make the brightness change linearly, the amount of current is changed with the change of the external potentiometer†(the company's commentator).
In addition, the shape of the power module is improved to be elongated in consideration of ease of use. “When the installer installs the LED lighting fixture to the ceiling, the power module is plugged into the ceiling through the hollow of the LED lighting fixture dug through the ceiling. To improve the operability, the shape is designed to be slender†( The company's commentator).
The output voltage and output current of the power module exhibited by the reference are respectively DC 95V and 700mA maximum. Mainly for indoor general lighting LED lighting. The input power of the LED exceeds 60W, which is more than 10 times that of the above 3 products. In the future, Sanmei Motor plans to expand the product line by using LED lighting power modules as standard products. The power module on display will be added to the future product line as the largest power product.
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