ULTRA CAPACITORS
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This document discusses ultracapacitors and their advantages over batteries. It begins with an introduction to energy storage and batteries. It then explains that ultracapacitors can charge and discharge much faster than batteries. The document outlines the working of ultracapacitors, which store electricity through physically separating positive and negative charges using a double-layer capacitance or pseudo capacitance. It lists applications like energy harvesting, railways, and the military. Advantages include fast charging, long lifespan, and high capacitance. Disadvantages are lower energy storage and faster discharge than batteries. The conclusion is that further research may lead ultracapacitors to replace batteries in the future.
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This document provides an overview of ultracapacitors, also known as supercapacitors or double-layer capacitors. It describes their high capacitance ranging from 5000F, their ability to store charge without chemical reactions, and how they store energy in a double layer at the electrode-electrolyte interface when voltage is applied. Ultracapacitors can store 5% as much energy as lithium-ion batteries but charge and discharge faster. They have applications in electric vehicles, UPS systems, and electronics due to their long life, rapid charging, low cost, and ability to function at low temperatures. However, their energy density is lower than batteries.
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WIRELESS MOBILE CHARGING USING MICROWAVES
INTRODUCTION
Microwave Region
TRANSMITTER SECTION
Magnetron
Slotted Waveguide Antenna
RECEIVER SECTION
Sensor Circuit
Process of Rectification
ADVANTAGES
DISADVANTAGES
APPLICATIONS
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Hi everyone my name is suraj patil. I upload solar tree ppt to this slideshare webpage and main points of topic are included in the slide .But their description are not inserted because from the tittle we can speak about that topic.You can reccieve all about information with the help of internet.Hence for seminar you must be study about this topic.And finally starts the presentation........thank you..!!!
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ULTRA CAPACITORS
- 2. Contents : • Introduction • Why to use Ultra Capacitor??? • Working • Technical description • Advantages and disadvantages • Conclusion
- 3. Introduction : • Power has become one of the important part of man’s life. Power can be stored in many ways in which one of them is battery. • Almost everything we use requires a battery.
- 4. Why to use Ultra Capacitors??? • The main drawback of battery used nowadays is its • Ultra capacitors could allow laptops and cell phones to be charged in a minute. Life time Time to charge
- 5. Working : • Ultra capacitors & Super Capacitors store electricity by physically separating positive and negative charges. • Storage takes place in two ways Double-layer capacitance Pseudo capacitance
- 6. 1) Power source, 2) Collector, 3) Polarized electrode, 4) Helmholtz double layer, 5) Electrolyte having positive and negative ions, 6) Separator.
- 9. Simple difference between More power required for small time interval in 200m race Constant but less power required for large time in 20km race Super capacitor battery
- 10. Applications • Energy harvesting • Railway • Streetlights • Buses • Formula-1 • Military • Ropeway
- 11. Advantages : • Super fast rate of charge and discharge • Life span - 500,000 plus charge/recharge cycles. • capacitance greater than 1000f at 1.2v.
- 12. Disadvantages : • They store a smaller amount of energy than a battery does. • Faster time to discharge. • Highly trained persons are required to operate
- 13. Conclusion : • Today we may not have a scope for the Ultra Capacitors but in future on the basis of research they will occupy the place of battery