A battery backup for the solar-mains hybrid lamp design that supplies a constant light output regardless of available solar ...

The circuit diagram of the resistor-based day lamp is shown in Figure 1. Figure 1 This schematic of the 10 W solar day lamp includes resistive current limiting. Figure 1 illustrates three LED arrays, ...

The circuit described here is a 12-V dc to 5-V dc (±5%) switched-mode power supply (SMPS). The supply uses a 12-V input from an array of four 3-V dc, 40-mA solar cells connected in series.

Using arrays of long, thin silicon wires embedded in a polymer substrate, scientists have created a new type of flexible solar cell that enhances the absorption of sunlight and efficiently ...