| 摘要 |
<p>The utility model provide a unidirectional light-emitting diode module apparatus comprising a rectification portion, a unidirectional light-emitting diode module portion, a constant voltage portion, a constant power control portion, a voltage dividing portion, an amplifying portion, a reference voltage supplying portion, and an adjusting voltage supplying portion. The unidirectional light-emitting diode module portion comprises multiple light-emitting diodes connected in a unidirectional manner. The constant voltage portion maintains constant voltage if voltage applied between the unidirectional light-emitting diode module portion and the other end of the rectification portion is more than predetermined level. The constant power control portion comprises switching elements operating in active regions and saturation regions and uses the switching elements to maintain constant power of the unidirectional light-emitting diode module portion in a predetermined range. The voltage dividing portion divides constant voltage outputted from the constant voltage portion in order to output divided voltage. The amplifying portion is used for amplifying the divided voltage in order to output amplified divided voltage. The reference voltage supplying portion uses voltage applied to the two ends of a three-terminal Zener diode in the constant voltage portion to supply reference voltage. The adjusting voltage supplying portion comprises a first detecting portion.</p> |
