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2. Solar charger - Wikipedia

   en.wikipedia.org/wiki/Solar_charger

   Portable solar chargers are used to charge cell phones and other small electronic devices on the go. Chargers on the market today use various types of solar panels, ranging from thin film panels with efficiencies from 7-15% (amorphous silicon around 7%, CIGS closer to 15%), to the slightly more efficient monocrystalline panels which offer efficiencies up to 18%.

3. Solar controller - Wikipedia

   en.wikipedia.org/wiki/Solar_controller

   The simplest solar controller circuit uses a comparator with two temperature inputs, one at the solar panel and one at the thermal store's heat exchanger, and an output to control the pump. Commercial controllers use a microprocessor usually with a LCD display and simple user interface with a few pushbuttons.

4. Solar-powered calculator - Wikipedia

   en.wikipedia.org/wiki/Solar-powered_calculator

   Solar-powered calculators are hand-held electronic calculators powered by solar cells mounted on the device. [1] They were introduced at the end of the 1970s. [2]Amorphous silicon has been used as a photovoltaic solar cell material for devices which require very little power, such as pocket calculators, because their lower performance compared to conventional crystalline silicon solar cells is ...

5. Megawatt Charging System - Wikipedia

   en.wikipedia.org/wiki/Megawatt_Charging_System

   The Megawatt Charging System (MCS) is a charging connector under development for large battery electric vehicles.The connector will be rated for charging at a maximum rate of 3.75 megawatts (3,000 amps at 1,250 volts direct current (DC)).

6. Harvesting lightning energy - Wikipedia

   en.wikipedia.org/wiki/Harvesting_lightning_energy

   To facilitate the harvesting of lightning, a laser-induced plasma channel (LIPC) could theoretically be used to influence lightning to strike in a predictable location. A high power laser could be used to form an ionized column of gas, which would act as an atmospheric conduit for electrical discharges of lightning, which would direct the lightning to a ground station for harvesting.

7. Thunderbolt (siren) - Wikipedia

   en.wikipedia.org/wiki/Thunderbolt_(siren)

   The Thunderbolt siren was developed between 1952 and 1990. It was the first "supercharged" siren, which uses a blower to force air into the rotor, greatly increasing the siren's volume. In the 1980s, when civil defense fell into disuse, Thunderbolts across the United States were repurposed for nuclear and storm warning siren systems.