All items tagged with technology and solar energy (4)

1-12-1995 | This circuit, a. d.c.-d.c. converter, is intended to charge environment-friendly batteries in and environment-friendly way. lt is based...

1-12-1995 | Drying the washing in sunlight has a number of advantages compared with using a tumble dryer: it saves a lot of energy : the ultraviolet...

1-07-1994 | A battery of solar cells can recharge a NiCd battery with better than 80%, efficiency, provided the solar battery voltage exceeds the fu...

1-12-1992 | The simplest solar-cell supply system consists of three parts: a diode, a solar-cell panel, and a rechargeable battery. The diode prevent...