Who is the world's top producer of nuclear power?

  The United States produces more electricity with nuclear power than any of the 30 countries with that capability.It has 104 operating reactors.

  In fact, it generates about the same amount of nuclear energy as the next largest producers, France and Japan, combined

World's first nuclear power pant......?

On June 26, 1954, 
at Obninsk, Russia, the nuclear power plant APS-1 with a net electrical output of 5 MW was connected to the power grid, the world's first nuclear power plant that generated electricity for commercial use.

 

Where is the world's largest hydropower project?

• Three Gorges, China.  
• The 22,500MW Three Gorges hydroelectric power plant in Yichang, Hubei province, China, is the largest hydropower station in the world.  
• It is a conventional impoundment hydropower facility exploiting the water resource of the Yangtze River

What is the fastest growing source of energy in the world?

• Renewables are now the world's fastest-growing energy source and are expected to increase by 2.6% per year through 2040.  
• Hydropower and wind are the two largest contributors to the increase in world electricity generation from renewable energy sources, the report stated

What country generates the most hydroelectric power and why?

China produces the most electricity from hydroelectric power, some 856.4 billion kilowatt hours a year – more than double the amount produced by Brazil, in second place.
The top three is completed by Canada, which produces 376.7 billion kilowatt hours a year.

Who invented the hydroelectric power plant?

In 1849, 

British–American engineer James Francis developed the first modern water turbine – the Francis turbine – which remains the most widely-used water turbine in the world today. 

In the 1870s,

American inventor Lester Allan Pelton developed the Pelton wheel, an impulse water turbine, which he patented in 1880.

World's first hydroelectric power plant....?

On September 30, 1882,
 the world's first hydroelectric power plant began operation on the Fox River in Appleton, Wisconsin.

The first artificial satellite....

• Sputnik 1 was the first artificial Earth satellite.
• The Soviet Union successfully launched that on October 4, 1957,
• 22.8 inches in diameter,only 83.6 kg weighted.
• It took about 98 minutes to orbit the Earth on its elliptical path.

What is schotty diode?

• It also known as Schottky barrier diode or hot-carrier diode.
• A solid state diode with metal semiconductor junction.
• It can be used for fast switching application.

Fig: Schemetic

LM339 as Comparator

• LM339 is a comparator IC containing 4 comparators.  
• When the voltage at non inverting (+) terminal is higher than the voltage at inverting terminal, the output voltage goes high. 
• When the voltage at inverting terminal is higher, the output voltage goes low.

Fig: Pinout

Fig: real world IC

Cell phone detector

Basic knowledge behind this project:

We all know about the Schotty diode which can detect the cell phone signsl, the frequency range of this signal is of 0.9 to 3 GHz. Schottky diodes have an unique property to rectify low frequency signals, with low noise rate.When an inductor is placed near any RF signal source, it receives the signal through mutual induction. This signal is rectified by the Schottky diode. we can amplify this signal then use to power any indicating LED.

Circuit Components:

• Battery = 12V
• L = 10uH
• R1 = 100Ohms
• C = 100nF
• R2 = 100K
• R3 = 3K
• Q1 = BC547
• R4 = 200 Ohms
• R5 = 100 Ohms
• IC1= LM339
• R6 = 10 Ohms
• LED = Blue LED

Applications:

1. We can use it at examination halls, meetings to detect presence of mobile phones and prevent the use of cell phones.
2. It can be used for detecting mobile phones used for spying and unauthorized transmission of audio and video.