| 摘要 |
A solar powered apparatus comprises a battery (10), a load (7) connected to the battery, and a solar cell (12) to recharge the battery, whereby the solar cell gives a signal output dependent on the light level sensed. A circuit (20) responsive to the signal output of the solar cell nominates a time for switching the load based on the amount of time that the signal output has been generated. In this way the switching of the load may be seasonally adjusted to accommodate changing daylight hours. The invention is particularly suited for use in solar powered beacons for use with traffic cones. |
