Hello! It's CAGRI.
Hello! It's CAGRI.
CUDA = Compute Unified Device Architecture
CUDA is a technology, feature, parallel computing platform and API that created by NVIDIA engineers. It also addition of C language. Also, the CUDA platform is designed to work with programming languages such as C, C++, and Fortran. This accessibility makes it easier for specialists in parallel programming to use GPU resources. That's why cuda is becoming so popular. On the other hand, to write OpenGL or Direct3D programs that required advanced skills in graphics programming. With cuda technology, we can make more efficient use of the GPU cores and use the cores in the GPU based process.
As we know, In computer games or that industry GPU's are very important for fps and quality. Day by day the industry use new technologies and games wants much more graphics power to run games properly. GPU's main purposes of games are graphics rendering and physical calculations (PhysX).
CUDA has also been used to accelerate non-graphical applications in computational biology, cryptography and other fields by an order of magnitude or more. This field very important because of MINING. Zcash and Etherium is very important and to produce these coins, we use our gpu power. Especially to mine zcash, CUDA technology uses very much.
Nowadays, many Nvidia gpu's support cuda features and technologies. No doubt that, many cuda versions are available and their performance different from each other.
What is circuit breaker mean ?
Circuit breaker is a device designed to shut off an electrical circuit when too much current is flowing. This usually occurs if too many devices are plugged in or if there is a short circuit. Circuit breakers are usually installed in the electrical panel. Inside the circuit breaker, there is usually two contacts which is touched between. When detect a fault in the system, poles are divided each other. The system reacts to immediate short circuits. The process can be change different circuit breaker types.
TypesThe types of circuit breakers can be divided by these fields;
By voltage level
Low voltage circuit breakersCommon in domestic, small industrial and commercial applications include Miniature circuit breaker (type B, type C and type D)and Molded Case Circuit Breaker versions.Characteristics given by international standards.Also It is made for DC applications.
Oil circuit breaker
Common in domestic, small industrial and commercial applications include Miniature circuit breaker (type B, type C and type D)and Molded Case Circuit Breaker versions. Characteristics given by international standards. Also It is made for DC applications.
SF6 Gas circuit breakerIn this type of circuit breaker, the contacts of device surrounded by SF6
They are most often used for high voltage transmission-level voltages. Especially cold places heating might be require to prevent gas liquefaction.
Disconnecting circuit breaker (DCB)
The disconnecting circuit breaker (DCB) was introduced in 2000 and is a high-voltage circuit breaker modeled after the SF6-breaker. The DCB is also high voltage circuit breaker.
The type of circuit breaker reduces the space requirement, increases availability and reliability.
Vacuum Circuit BreakerIn this circuit breaker, the fixed and moving contact is enclosed in a permanently vacuum area.Vacuum circuit breaker has a high insulating medium for arc extinction as compared to the other circuit breaker.
When the fault occurs in the system, the contacts of the breaker are moved apart and hence the arc is developed between them.
Carbon dioxide (CO2) high-voltage circuit breakersWorks on the same principle as Sulphurre hexafluoride circuit breaker, can also be produced as a disconnecting circuit breakers, high voltage breakerPossible to reduce nearly 10 tons of carbon dioxide emissions during the product’s life time .
ConclusionCircuit breaker is an essential part of electrical network as it protects every device from electrical damage. Helps us to detect the fault and the area associated with it. Day by day circuit breaker technology is increasing and new techniques invent. So, the circuit breakers becoming safer than older types. Nowadays, most common circuit breake types are vacuum and sulphur hexaflouride circuit breakers are widely used due to their reliable and fast operations.
Wikipedia.com, Mr. Priyankar Misra's presentation, circuitglobe.com
Mehmet Çağrı Aksoy - Kaunas University Of Applied Engineering Sciences All rights reserved.
Electric cars are becoming popular and many governments want to develop new electric vehicles and cars to use their countries. As I wrote about before, the field that electric cars, pioneer is Tesla company. The company is not first company which produce electric cars, but they are very popular nowadays. Tesla also known as company which integration many engineering fields in the same vehicle. In this article I’ll mention about electric car features, technology and future.
Electric cars’ specific features are electric motors and batteries:
Motor Types (AC, DC)
Motor types can be divided two. They are AC or DC motors. AC motors are more effective than DC one and alternating-Current motors are better for continuous power than DC motors. Almost all of vehicles in the market are AC motors. AC motors use with regenerative braking systems in the electric vehicles or hybrid cars, so cars are becoming more efficient. Generally, AC motors run more smoothly and can be precisely controlled so that AC motors are used by many EV.
On the other hand, AC motors have significant disadvantages. They are more expensive than DC Motors and so are the battery packs. They are also more complicated to control. Because battery output is DC, they require a converter which takes up a lot of space.
DC motors are more affordable and easier to control. They also have greater initial torque and higher peak power, the cars which use DC motor can accelerate very quickly, so DC motors use in racer cars. A major disadvantage of DC motors is a tendency to overheat. When the RPM rises, the engine becomes overheated. AC motors do not heat up as DC motors. They also become very large and heavy according to their power output.
Battery Types (Lead-acid, Li-ion, NiMH, Li-Po)
Four types of batteries are found in electric cars. However, lithium polymer batteries are not used very often in vehicles. Lead acid batteries are oldest type of rechargeable battery. Its production costs are less than other batteries. It is toxic and prone to explosion. Lithium ion batteries has high energy-to-mass ratio.
Lithium ion batteries are best option to use in the electric cars and other type of vehicles, but some types are very expensive to produce. Also, they retain their stored energy when not in use but lose capacity with age. Nickel metal hydride [NiMH], batteries good energy-to-mass ratio, and non-toxic which makes for easy recycling. The major disadvantage to nickel metal hydride batteries is that they don't hold a charge very well when they aren't being used.
Kaunas University of Applied Engineering Sciences - Homework