Abstract: A solar-powered crosswalk warning system is disclosed. The crosswalk warning system comprises two or more crosswalk warning beacons, located on opposite sides of the road. Each beacon comprises a solar panel to recharge a battery, a battery back, a control unit to charge the battery pack during daylight hours, a communication unit to communicate to the second crosswalk beacon, a traffic signal lamp ton warn oncoming traffic, and a triggering means by which the pedestrian can activate the beacons.

Abstract: An apparatus for powering a load from solar energy comprises a DC/DC converter, battery terminals coupled to an output of the DC/DC converter and coupleable to an energy storage device, and solar panel terminals coupled to an input of the DC/DC converter and coupleable to a solar panel. Logic is coupled to the converter to control its conversion rate. A detector is coupled to the converter and detects its power output. The logic is operable to adjust the conversion rate until the solar panel operates at the smaller of a maximum power point of the solar panel and a power point of the solar panel that results in a maximum desired power.

Abstract: A solar-powered crosswalk warning system is disclosed. The crosswalk warning system comprises two or more crosswalk warning beacons, located on opposite sides of the road. Each beacon comprises a solar panel to recharge a battery, a battery back, a control unit to charge the battery pack during daylight hours, a communication unit to communicate to the second crosswalk beacon, a traffic signal lamp ton warn oncoming traffic, and a triggering means by which the pedestrian can activate the beacons.