Panel Junction
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Panel Junction
What are Photovoltaic Solar Panels and How Do They Work?
Photovoltaic Solar Panels generate electricity by using a phenomenon first discovered in 1839 by a young scientist called Edmund Becquerel. This phenomenon, called the photovoltaic effect occurs when certain materials produce electric currents as they are exposed to light.
A photovoltaic solar panel is essentially a huge series of semiconductor PN junctions. One half of each junction is electron deficient, the other half electron rich. The photovoltaic cell is designed to create an electric field across the junction between two halves of the crystal, and electrons flow from the rich half to the poor half. A potential barrier exists between the p and n-type sides of the crystal and this prevents further electrons from traveling across the junction until sunlight hits the solar cell and releases electrons with enough energy to overcome the barrier.
High School physics taught us that the light from the sun is made up of packets of energy called Photons. Each photon carries an amount of energy corresponding to the wavelength of its light. When a photon strikes a photovoltaic solar panel it can do one of three things. It can pass straight through, be reflected, or be absorbed. If the photon is absorbed, its energy is absorbed by an electron in an atom of the solar cell enabling it to escape from its normal position, cross the junction and fill a hole. The electrons then flow through a load (e.g. charging a battery, lighting a light, or powering a motor), and complete the circuit by recombining with the holes they left behind. In so doing energy from the sunlight has been extracted and used at an efficiency of around 5-15%. This process can be repeated over and over again over the decades of lifetime of solar cells.
About the Author
Photovoltaic solar cells are simple looking yet complex in operation. However, they are very efficient and last a long time. Because of this, they are ideal for using in your house to create electricity. With todays huge energy prices, theres never been a better time to kit your house out with photovoltaic solar panels and save money. I found a great guide at This website that outlines how to use them to your best advantage.
Strange power usage at apt, Why after a bath, the hot water tank is using electricity from other apt meter ?
We have been gettting very high energy bills, the other 2 apt. aren't complaining at all.normal for them.
I see the meter spinning around fast to warm up my hot water tank ?? My meter should be spinning instead ? Is there a load balance between my meter and upstair meter ? junction boxes maybe to splice up ?
How can i know ?what could be wrong ? to electrical panels spliced somehow ? any ideas ?
Turn everything off in your apt. and see if the meter still spins. I would talk to the landlord, the power company won't do anything, it is not their equipment.
'Junction' Panel's film about London: World City project