PUBLIC ADDRESSING SYSTEM (PA SYSTEM)
is an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers, used to allow a person to address a large public.
PUBLIC ADDRESSING SYSTEM (PA SYSTEM)
is an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers, used to allow a person to address a large public.
An overhead projector (OHP), like a film or slide projector, uses light to project an enlarged image on a screen, allowing the view of a small document or picture to be shared with a large audience.
In the overhead projector, the source of the image is a page-sized sheet of transparent plastic film (also known as "foils" or "transparencies") with the image to be projected either printed or hand-written/drawn. These are placed on the glass platen of the projector, which has a light source below it and a projecting mirror and lens assembly above it (hence, "overhead"). They were widely used in education and business before the advent of video projectors.
audio visual aids or medias are the instructional aids which v can use for making our teaching more effective correct and interesting that are helpful to make teaching effective.
An overhead projector (OHP), like a film or slide projector, uses light to project an enlarged image on a screen, allowing the view of a small document or picture to be shared with a large audience.
In the overhead projector, the source of the image is a page-sized sheet of transparent plastic film (also known as "foils" or "transparencies") with the image to be projected either printed or hand-written/drawn. These are placed on the glass platen of the projector, which has a light source below it and a projecting mirror and lens assembly above it (hence, "overhead"). They were widely used in education and business before the advent of video projectors.
audio visual aids or medias are the instructional aids which v can use for making our teaching more effective correct and interesting that are helpful to make teaching effective.
Compatible, Convenient & Complete - Saatvik offers wide range of Portable PA System which are attractive, ready to use a complete packaged system with microphone, speaker, amplifier all supplied in one integrated package.
The PA system can function with multiple indoor/outdoor zones and has the ability to communicate with each zone or specific PA speaker.
Lightning, Surge Protection and Earthing of Electrical and Electronic Systems...Living Online
Few topics generate as much controversy and argument as that of lightning and surge protection of electrical and electronic systems. Poor practices in earthing, and incorrect application and selection of lightning and surge protection devices can be the cause of continual and intermittent problems in a facility, often resulting in lost production and equipment failure.
This workshop looks at these issues from a fresh yet practical perspective and enables you to reduce expensive down time on your plant and equipment by the correct application of these principles. Essentially the workshop is broken down into the methods used to prevent lightning entering a facility such as dissipation arrays and those that divert surge energy away from sensitive equipment.
Dissipation systems are discussed with associated earthing systems. The unique properties of various surge protection devices are reviewed, enabling you to select the correct device suited to the application required. Earthing and surge protection for telecommunications and IT systems are examined in detail as well as the impact of lightning and simple techniques for minimising its impact.
MORE INFORMATION - http://www.idc-online.com/content/lightning-surge-protection-earthing-electrical-electronic-systems-industrial-networks-13?id=6987
http://www.innovationwireless.com/landing-pages/wireless-pa-systems.html
Getting Your PA Systems Implemented Properly
Today P A systems provide superb methods for communicating with mass target markets in an effective and also reliable way. These P A systems may be hardwired, calling for one to route a network of cables beforehand, or they might be wireless, saving one the concern of outlining a grid of cables however counting rather on radio frequency transmissions to provide sufficient bandwidth and also connection for achieving the required audio top quality. Installations utilized to be found primarily in colleges, yet they have actually become commonplace in many different sort of work environment settings.
Standard P A systems include sets of speakers dispersed throughout the facility as well as a single centralized audio resource that is broadcast to all speakers concurrently. Yet additional features are commonly employed, such as the capability for broadcasting recorded messages in addition to real-time speech and also a bell or tone electrical generator audibly advising everyone that a message is imminently forthcoming. This latter feature serves to concentrate people's focus.
To guarantee appropriate application of the P A system, one must comprehend the essential ideas included as well as take time to identify just what functions are important for that certain installment. Additionally, though it is not purely required to incorporate the PA system right into a clock synchronization system, we advise doing so, also to the extent of synchronizing all watches first if they are not so already. Usually the exact same company could mount both kinds of system.
Synchronization is essential since or else one opens up oneself to mass cognitive dissonance as well as confusion. Even ordinarily diverse aspects within the company all have to be cued to pay attention at the same time to the usual, company-wide statements. If some aspects run out sync with others this feature is not apt ahead off efficiently.
Once time synchrony is developed, it is fairly simple to synchronize all audio speakers regardless of their areas. (This statement holds whether the public address system is wired or wireless.) The signaling tone or bell then seems as a single unit without resemble, as does the follow-on reading of the different notices.
POWER SYSTEM PROTECTION
Protection Devices and the Lightning,. protection,
Lightning protection, Introduction
Air Break Switches
Disconnect switches
Grounding switches
Current limiting reactors
Grounding transformers
Co-ordination of protective devices
Grounding of electrical installations
Electric shock
Lightning protection
Lightning Arrestor
Lightning, Surge Protection & Earthing of Electrical & Electronic Systems in ...Living Online
Few topics generate as much controversy and argument as that of lightning and surge protection of electrical and electronic systems. Poor practices in earthing, and incorrect application and selection of lightning and surge protection devices can be the cause of continual and intermittent problems in a facility, often resulting in lost production and equipment failure.
This workshop looks at these issues from a fresh yet practical perspective and enables you to reduce expensive down time on your plant and equipment by the correct application of these principles. Essentially the workshop is broken down into the methods used to prevent lightning entering a facility such as dissipation arrays and those that divert surge energy away from sensitive equipment.
Dissipation systems are discussed with associated earthing systems. The unique properties of various surge protection devices are reviewed, enabling you to select the correct device suited to the application required. Earthing and surge protection for telecommunications and IT systems are examined in detail as well as the impact of lightning and simple techniques for minimising its impact.
MORE INFORMATION: http://www.idc-online.com/content/lightning-surge-protection-earthing-electrical-electronic-systems-industrial-networks-13?id=6987
This quick and simple guide shows how you can save your PowerPoint slides as high resolution images. This trick is ideal for uploads to SlideShare as you won't lose any quality of your slides. It also works perfect for sharing individual high-quality slides on social media.
This presentation was created 100% in PowerPoint by my presentation design agency Slides. We are based in Spain (Europe) but have clients worldwide.
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For more than fifty years, Dukane’s Audio Visual Products Division has provided schools and businesses around the world with technology solutions that helped increase learning. With a network of trained professional dealers available to provide personal and localized sales support, Dukane is committed to meeting each customer’s particular needs.
For more information contact:
Delia Valdez
Dukane Customer Service Representative
Phone: 888-245-1966
Fax: (630) 584-5156
Emai; DValdez@Dukane.com
Website: www.Dukane.com/AV
For information on Dukane’s Innovative Convey Response system, go to
www.conveyclassrooms.com
Dukane AV
2900 Dukane Drive
St. Charles, IL 60174
"Embracing Web 2.0 and New Media Communications"arester
Presentation by Renee Basick, Interim Director, Chicago Media Initiatives Group (University of Chicago) and Aaron Rester, Manager of Electronic Communications, University of Chicago Law School. Presented Monday, December 10th, at the CASE V Conference "Connecting the Best" in Chicago, Illinois.
The 8115 is a new Ultra Short Throw( UST) projector from Dukane
For more than fifty years, Dukane’s Audio Visual Products Division has provided schools and businesses around the world with technology solutions that helped increase learning. With a network of trained professional dealers available to provide personal and localized sales support, Dukane is committed to meeting each customer’s particular needs.
For more information contact:
Delia Valdez
Dukane Customer Service Representative
Phone: 888-245-1966
Fax: (630) 584-5156
Emai; DValdez@Dukane.com
Website: www.Dukane.com/AV
For information on Dukane’s Innovative Convey Response system, go to
www.conveyclassrooms.com
Dukane AV
2900 Dukane Drive
St. Charles, IL 60174
This book is aimed at enabling the learner utilize radio to produce news and appropriate programmes for the benefit of society.
At the end of this course the learner should be able to:
Gather news from various sources using appropriate methods and techniques.
Process and present information to the audiences
Develop skills, attitudes and values in presenting radio news and other programmes
And for those using this as a guide to attain a diploma in journalism and mass communication at UMCAT SCHOOL OF JOURNALISM AND MASS COMMUNICATION, ought to be prepared to attempt a two hours practice exam, of which one and half hours is planning session, and thirty minutes for presentation
Assessing ability of the candidate to:
Script writing, presentation, moderation, timing, coherence dress code, voice, clarity in presentation, accuracy, individual confidence among others.
For more than fifty years, Dukane’s Audio Visual Products Division has provided schools and businesses around the world with technology solutions that helped increase learning. With a network of trained professional dealers available to provide personal and localized sales support, Dukane is committed to meeting each customer’s particular needs.
For more information contact:
Delia Valdez
Dukane Customer Service Representative
Phone: 888-245-1966
Fax: (630) 584-5156
Emai; avsales@dukane.com
Website: www.Dukane.com/AV
For information on Dukane’s Innovative Convey Response system, go to
www.conveyclassrooms.com
Dukane AV
2900 Dukane Drive
St. Charles, IL 60174
Please let me know me know if you would like more information or if I can be of as assistance.
Thanks
Bill McIntosh
SchoolVision Inc.
Authorized Dukane Consultant
Phone :843-442-8888
Email :WKMcIntosh@Comcast.net
Twitter : @OtisTMcIntosh
SchoolVision Website on Facebook: https://www.facebook.com/WKMIII
To follow Dukane on twitter
Dukane AV products : @DukaneAV
Convey Solutions: @ConveySolutions
To follow Dukane on facebook :
https://www.facebook.com/pages/Dukane-Audio-Visual/511233205592745
To follow Convey on Facebook :
https://www.facebook.com/pages/Convey-Solutions/173651736115281
And yes, Dukane has a www.dropbox.com site, so if you would like to get a full set of Dukane info in one fell swoop, we can dropbox info to you.
For more than fifty years, Dukane’s Audio Visual Products Division has provided schools and businesses around the world with technology solutions that helped increase learning. With a network of trained professional dealers available to provide personal and localized sales support, Dukane is committed to meeting each customer’s particular needs.
For more information contact:
Delia Valdez
Dukane Customer Service Representative
Phone: 888-245-1966
Fax: (630) 584-5156
Emai; avsales@dukane.com
Website: www.Dukane.com/AV
For information on Dukane’s Innovative Convey Response system, go to
www.conveyclassrooms.com
Dukane AV
2900 Dukane Drive
St. Charles, IL 60174
Please let me know me know if you would like more information or if I can be of as assistance.
Thanks
Bill McIntosh
SchoolVision Inc.
Authorized Dukane Consultant
Phone :843-442-8888
Email :WKMcIntosh@Comcast.net
Twitter : @OtisTMcIntosh
SchoolVision Website on Facebook: https://www.facebook.com/WKMIII
To follow Dukane on twitter
Dukane AV products : @DukaneAV
Convey Solutions: @ConveySolutions
To follow Dukane on facebook :
https://www.facebook.com/pages/Dukane-Audio-Visual/511233205592745
To follow Convey on Facebook :
https://www.facebook.com/pages/Convey-Solutions/173651736115281
And yes, Dukane has a www.dropbox.com site, so if you would like to get a full set of Dukane info in one fell swoop, we can dropbox info to you.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
2. PRESENTATION
ON
HANDLING OF PUBLIC ADDRESS
EQUIPMENT SYSTEM- LIQUID CRYSTAL
DISPLAY(LCD), STILL CAMERA AND VIDEO
CAMERA
INSTRUCTOR
Dr. D. K. MEENA
RGSC, BHU
SPEAKER
NEHA TANDON
NISHU KUMARI
2
8/11/2016
3. PUBLIC ADDRESS SYSTEM
Public Address (P.A.) systems originated in
ancient Greece with the construction of
amphitheatres
“Public address system is a set of equipments to
amplify sound so that it is audible to a large
audience over a distance.”
Used in extension programmes involving a large
number of people such as mass meeting, training
programme, field day or farmer’s day, campaign,
exhibition etc.
38/11/2016
4. COMPONENTS OF PUBLIC ADDRESS
SYSTEM
A public address system has three components:-
1.MICROPHONE/MIKE/MIC
• It is an acoustic-to-electric sensor that converts sound into
an electrical signal.
2.AMPLIFIER/ELECTRONIC AMPLIFIER/AMP
• It modulates the output of the power supply to make the
output signal stronger than the input signal.
3.LOUDSPEAKER/SPEAKER
• It is a device which convert an electrical audio signal into a
corresponding sound.
48/11/2016
6. WORKING OF A PUBLIC ADDRESS
SYSTEM
The working of the PA system consists of 4 steps:-
1.Begins with a sound source (such as a human
voice), which creates waves of sound (acoustical
energy).
2.These waves are detected by a microphone, which
converts them to electrical energy.
3.This signal is amplified in an amplifier up to a
required level.
4.The loudspeaker converts the electrical signal
back into sound waves, which are heard by
human ears. 68/11/2016
7. TYPES OF PUBLIC ADDRESS SYSTEM
1.SMALL PA SYSTEMS
• Simplest PA systems consisting of a microphone, an
amplifier, and one or more loudspeakers.
2.LARGE PA SYSTEMS
• PA systems having speakers that cover an entire
campus of a college or industrial site.
3.LONG LINE PA SYSTEMS
• Any PA system across a wide geographic area, larger
than in large PA systems.
78/11/2016
8. LIQUID CRYSTAL DISPLAY(LCD)
A liquid-crystal display (LCD) is a flat-panel
display or electronic visual display.
They produce no light of their own
They require external light to produce a visible
image provided by backlights provided at the
back of the glass.
88/11/2016
9. LCD PROJECTOR
An LCD projector is a type of video projector
for displaying video, images or computer data
on a screen or other flat surface
LCD projectors typically send light from
a metal-halide lamp through a prism that
produces a wide range of colors and shades in
the projected image.
8/11/2016 9
10. USE OF LCD PROJECTOR IN EXTENSION
TEACHING PROGRAMMES
• Essence of a presentation
• Brings audio-visual inputs to the programme
• Inputs planned elsewhere in the world can be
brought into the programme
• Demonstrations
• Webinars
• Quizzes
• Lectures
• Group activities 108/11/2016
11. ADVANTAGES OF USING LCD PROJECTOR
• Low power consumption
• Unconstrained by geographical location of
device
• Clearer image display
• Can incorporate audio and video clips
• Easier note taking
• Greater teaching versatility
• Better use of class time
118/11/2016
12. THINGS TO BE KEPT IN MIND WHILE
USING A LCD PROJECTOR
Will the presentation hold the attention of the
audience?
Will it efficiently supplement what he/she is
going to present?
Can the audience read the presentations
without much delay?
Can the audience listen to the talk of the
presenter as well as read the text presented
and relate both?
128/11/2016
13. VIDEO CAMERA
A video camera is camera used to make
electronic motion pictures. It captures
moving images and synchronous sound.
WHY VIDEO CAMERA ?
It is a type of visual communication which
use moving pictures and sound to
tell stories or inform (help people to learn).
138/11/2016
14. 1. Lens
2. Viewfinder
3. Body
4. Shutter Release
5. Aperture
6. Image Sensor
7. Memory Card
8. LCD Screen
9. Flash
10. User Controls
MAJOR COMPONENT OF VIDEO CAMERA
148/11/2016
15. STILL VEDIO CAMERA
A still video camera is a type of
electronic camera that takes still images and stores
them as single frames of video.
The best known model’s include Sony Mavica,
Canon’s lon and Xapshot cameras.
The most common design has an image sensor
and basic processing hardware similar to that of a
domestic analog camcorder.
158/11/2016
16. 16
Canon RC-250 QPIC still
video camera
Prototype Sony Mavica still
video camera from 1981.
8/11/2016
17. 1. Media
2. Home video
3. Politics
4. In surveillance
5. Entertainment
6. Education
MOSTLY USED FOR
178/11/2016