| 摘要 |
The present invention relates to an LED controlling device using sun light extending its lifespan while simultaneously completing a product in a low price for guaranteeing productivity by controlling the charge of an electric double layer capacitor (EDLC) (40) through comparing the voltage of electric energy of a solar cell module (20) with standard voltage at a voltage determining part (80) unlike controlling the charging of a battery by an illuminance sensor which is expensive and vulnerable to temperature and humidity. [Reference numerals] (20) Solar cell module;(30) Constant voltage circuit part;(50) Boosting circuit part;(60) Switch part;(70) Frequency oscillating part;(80) Voltage determining part |
