how wireless charging works and different types of wireless charging and its uses

2. Contents
 Introduction
 Types of wireless charging
 Resonance Charging
 Inductive Charging
 Radio Charging
 How it works?
 How it can be used
 Advantages
 Disadvantages

3. WIRELESS CHARGING IS ONE OF THE SEVERAL METHODS OF
CHARGING BATTERIES WITHOUT THE USE OF CABLE OR DEVICE
SPECIFIC AC ADAPTORS.
WIRELESS CHARGING CAN BE USED FOR A WIDE VARIETY OF DEVICES
INCLUDING CELL PHONES, LAPTOP COMPUTERS AND MP3 PLAYERS AS
WELL AS LARGER OBJECTS SUCH AS ROBOTS AND ELECTRIC CARS.
Introduction

4. Types of wireless charging
There are three types of wireless charging :-
 Resonance Charging
 Inductive Charging
 Radio Charging

5. Resonance Charging
 It uses phenomenon of “RESONANCE”, that causes an
object to vibrate when energy of certain frequency is
applied.
 Two copper coils are used one attached to transmitter &
another to receiver.
 Both coils are tuned to same electromagnetic frequency.
 These coils when placed close to one another power is
transferred.

6. Inductive Charging
 Induction chargers typically use an induction coil to
create an alternating electromagnetic field from within a
charging base station, and a second induction coil in the
portable device takes power from the electromagnetic
field and converts it back into electric current to charge
the battery. The two induction coils in proximity combine
to form an electrical transformer.

7. Radio Charging
 This method is on the basis that Radio Waves are widely
in use to transmit and receive cellular telephone,
television, radio and Wi-Fi.
 A Radio wave once transmitted, propagates in all
directions until it reaches an antenna tuned to proper
frequency to receive it.
 A transmitter plugged in to a socket, generates radio
waves, when the receiver attached to the device is set to
the same frequency as the transmitter, it will charge the
device’s battery.

8. How Inductive Charging works?

9. How radio charging work?

10. Where it can be used?
 It can be used in electric toothbrush.
 Ex. Oral-B provides chargeable toothbrushes which can be charge
with wireless charging technology.

11.  It can be used in mobile charging
Various Smartphone companies provides the wireless charging
feature in there mobile phone .
Ex. Nexus 6, moto turbo, Samsung galaxy S6.

12.  It can also be used to charge the laptop.
 Ex. Dell provides the wireless charging laptop.

13. Advantages
 Greater convenience and ubiquity for charging of everyday devices
 Reduce cost associated with maintaining mechanical connectors
 Safe powering or charging devices that need to remain sterile or
hermetically sealed (waterproof)
 Prevent corrosion due to elements such as oxygen and water
 Eliminate sparks and debris associated with wired contacts

14. Disadvantages
 It is more expensive then conventional charging techniques.
 It is not compatible with all type of electric devices.
 Lower efficiency then the conventional charging .
 No mobility as you need to put your device on that place only for
charging.

15. Acknowledgement
 Google
 Wikipedia
 Google Images
 Android Central