circuit diagram of over under voltage protectn of electrical applicatins using lm324 ....etc

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I want to preaperd to a seminar ppt on this topic,
so i want to some data here.please give me some data.
thanks ....etc

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REGULATED POWER SUPPLY
1.1 Types of Power Supply
There are many types of power supply. Most are designed to convert high voltage AC mains electricity to a suitable low voltage supply for electronic circuits and other devices. A power supply can by broken down into a series of blocks, each of which performs a particular function.
For example a 5V regulated supply:
Figure 1.1 block diagram of a regulated power supply
Each of the blocks is described in more detail:
Transformer- steps down high voltage AC mains ....etc

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Underfrequency Protective Relay

The underfrequency relay (fig. 4-16) is a solidstate device that functions to protect the load in the event generator frequency decreases below preset limits. It actuates when the frequency decreases to 55 hertz for 60-hertz operation and 46 hertz for 50-hertz operation. Upon actuation, contacts within the relay close to signal the annunicator and open to de-energize the generator breaker (contactor), resulting in a display of the fault condition and removal of the load from the generator.

Frequency sensing ....etc

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To get full information or details of under voltage relay manual please have a look on the pages

http://seminarsprojects.net/Thread-over-under-voltage-protection-relay

http://seminarsprojects.net/Thread-auto-reset-over-under-voltage-cut-out-by-using-relay

if you again feel trouble on under voltage relay manual please reply in that page and ask specific fields in under voltage relay manual ....etc

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To get full information or details of alstom vagm22 relay manual please have a look on the pages

http://alstomsignalingsolutionsourproducts/waysideproducts/relays/

if you again feel trouble on alstom vagm22 relay manual please reply in that page and ask specific fields in alstom vagm22 relay manual ....etc

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Dear Sir,

Kindly send the catalogue

[email protected]
Dear Sir,

Kindly send the catalogue areva vagm22 relay.

[email protected] ....etc

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Abstract

A proponent of sustainable mobility, Alstom provides a complete range of systems, equipment and services in the railway sector. Alstom India is comprised of four businesses: Rolling stock & Components, Systems & Infrastructure, Transport Information Solutions and Train Life Services. With a full range of highly advanced products and solutions and a strong local footprint, it is well geared to participate in the upcoming rail transportation projects in India and South Asia, including high speed train projects.

Alstom is a leading ....etc

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Abstract

This paper illustrates modeling and simulation of overvoltage and undervoltage protection scheme. The method is based upon the operation of relay under overvoltage and undervoltage faults. The term power quality is used to describe as the quality of power that is given as input to various electrical load and ability of load to function properly. Without proper power the devices may misoperate or fail. There are many ways in which electric power can be poor quality and many more causes for such poor quality. Among the various power qua ....etc

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to get information about the topic over under voltage protection relay full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-over-under-line-voltage-protection-for-electrical-appliances

http://seminarsprojects.net/Thread-over-under-voltage-cut-off-with-on-time-delay-project-report?pid=16282&mode=threaded

http://seminarsprojects.net/Thread-generator-protection-in-bpcl-kochi-full-report?pid=12056&mode=threaded ....etc

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