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Ravindra Shrivastava - ArticlesAuthor is a Great Person.
Rf ConnectorsAn RF connector is an electrical connector designed to work at radio frequencies in the multi-megahertz range. RF connectors are typically used with coaxial cables and are designed to maintain the shielding that the coaxial design offers. Better models also minimize the change in transmission line impedance at the connection. LedsLED was discovered accidentally in the early last century (1907). In early development stage, carborundum crystals were used as light-emitting active material. Nick Holonyak Jr. of the General Electric Company has developed the first practical visible-spectrum LED in 1962. Eeprom (electrically Erasable Programmable Read-only Memory)EEPROM stands for Electrically Erasable Programmable Read-Only Memory. EEPROM is a type of non volatile memory which is used in computers or electronic devices to maintain the data when power is turned off but in case SRAM or DRAM information may be lost when power is switched off. To store the larger amount of data, a special type of EEPROM is used known as flash memory which is more economical in comparison to EEPROM devices. Applications of Switching RegulatorsVirtually all of today's electronic systems require some form of power conversion.
The trend toward lower power, portable equipment has driven the technology and
the requirement for converting power efficiently. Switchmode power converters, Video Display ControllerA Video Display Controller or VDC is an integrated circuit which is the main component in a video signal generator, a device responsible for the production of a TV video signal in a computing or game system. Some VDCs also generate a sound signal, but in that case it's not their main function. Types of Switched Capacitor Voltage ConvertersIn the above circuit capacitor C1 is charged to the input voltage during first half of switching cycle. In the second half of switching cycle its voltage is inverted and applied to capacitor C2 and load. The output voltage is negative of the input voltage. The Duty cycle – defined as ratio of charging time of capacitor C1 to the entire switching cycle time – is usually 50% because that generally yields the optimal charge transfer efficiency. Smart CardA Smart Card or Integrated Circuit Card (ICC) is very small as any pocket-sized card with embedded integrated circuits which can process data. It can receive input which is processed by way of the Integrated Circuit Card applications and delivered as an output. Rohs and Its ImportanceRoHS stands for “restriction of hazardous substance“. The term was coined by European Union (EU) in the year 1998 after it noticed alarmingly large quantities of hazardous waste being dumped into landfill sites. The volumes of these wastes were likely to increase 3-5 times faster than the average municipal waste. This indicated a very fast growing source of environmental contamination. RoHs is often referred to as the “lead-free” legislation, but it restricts the use of the following six substan Optical Connector and DevicesAn optical fiber connector enables quicker connection and disconnection by terminating the end of an optical fiber and these types of connectors can pass light easily for that they are mechanically coupled. Many types of optical fiber connectors are available. Dimensions and methods of mechanical coupling make main difference. Blu-ray DiscBlu-ray Disc (also known as Blu-ray or BD) is an optical disc storage media format. It is mainly used in high-definition video and data storage. Blu-ray Disc has the same physical dimensions as a standard DVD or CD.
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