Advances in microprocessor technology pose new challenges for supplying power to these devices. The evolution of microprocessors began when the high-performance Pentium processor was driven by a nonstandard power supply of less than 5 V instead of...

A fire alarm circuit, as its name implies, sounds an alarm in the event of a fire. There can be one or several alarms throughout a building, and there can be several alarm points which activate the warning.

Many micro electro mechanical systems (MEMS) devices are now on the market. They are available for use as components in diverse systems with many applications. Some MEMS devices are used primarily for their planned employment.

A diesel or gas turbine generator set can be installed in a building to provide electricity when the public supply fails. This is a complete form of protection against all possible interruptions of the main supply.

A sodium vapor lamp is a gas discharge lamp that uses sodium in an excited state to produce light. There are two varieties of such lamps low pressure and high pressure. Because sodium vapor lamps cause less light pollution than mercury-vapor and other types of lamps.

To step up the generation voltage level of 11 KV to that of transmission level of 132KV generator is connected to transformer. Off load tap changer is proposed on high voltage side. An allowance of 10% continuous over load is also proposed.

There is a lot of Auxiliary equipment used in hydropower house for efficient performance of the plant. Some of the equipment is very expensive and intense care must be taken while they are selected and installed.

Grid stations plays a vital role in the distribution of Hydroelectric power form their generation units (dams) to the remote city and suburb areas, through a proper distribution system called Grid Stations or shortly GSS.