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2. Solar lamp - Wikipedia

   en.wikipedia.org/wiki/Solar_lamp

   A solar lamp, also known as a solar light or solar lantern, is a lighting system composed of an LED lamp, solar panels, battery, charge controller and there may also be an inverter. The lamp operates on electricity from batteries , charged through the use of a solar photovoltaic panel.

3. LED circuit - Wikipedia

   en.wikipedia.org/wiki/LED_circuit

   Simple LED (Light Emitting Diode) circuit diagram. In electronics, an LED circuit or LED driver is an electrical circuit used to power a light-emitting diode (LED). The circuit must provide sufficient current to light the LED at the required brightness, but must limit the current to prevent damaging the LED.

4. Charge controller - Wikipedia

   en.wikipedia.org/wiki/Charge_controller

   A shunt charge controller or shunt regulator diverts excess electricity to an auxiliary or "shunt" load, such as an electric water heater, when batteries are full. [7] Simple charge controllers stop charging a battery when they exceed a set high voltage level, and re-enable charging when battery voltage drops back below that level.

5. Bitcoin could soar to $500,000 if the US starts buying the ...

   www.aol.com/bitcoin-could-soar-500-000-195728585...

   Bitcoin could soar to $500,000 if Trump creates a national reserve, Bitwise CIO Matt Hougan said.. The US creating a national stockpile will influence other countries to follow suit, he predicted ...

6. Light-emitting diode - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode

   One-color light is well suited for traffic lights and signals, exit signs, emergency vehicle lighting, ships' navigation lights, and LED-based Christmas lights Because of their long life, fast switching times, and visibility in broad daylight due to their high output and focus, LEDs have been used in automotive brake lights and turn signals.

7. Five freed members of Bali Nine drug gang ‘relieved and happy ...

   www.aol.com/indonesia-releases-remaining-five...

   The remaining five Australians from the infamous “Bali Nine” drug gang are “relieved and happy” to be home after Canberra struck a deal with Jakarta to end their two decades of imprisonment.