| 摘要 |
The solar panel direct current (DC) load system uses a solar energy panel and rechargeable battery powering at least one load system which are : a type of water pump and a type of at least one LED. The system comprises a battery discharge control and a battery output circuit for DC load, at least one rechargeable battery source which is protected by a preset voltage that limits the lowest discharge level. The circuits enable operation of day time and night time DC load to synchonise the day and night cycles. Figure 4 is a combination system which incorporates a water pumping system combined with an illumination system. The water pumping system may shut down at night automatically. The illumination system has at least one LED which can turn off in the morning and turn on in the evening automatically. |
