Week 5 : The design

Objectives:

1. To design the wireless charger by compared with design that has been create by others
2. To study the method that being used in built up the wireless charger

Methods:

1. By making research on internet
2. Comparing other person that has create the wireless charger
3. Attachment below shows the design and the block diagram of the project

Results:

Figure 1: design for the wireless charger

Figure 2: block diagram for the wireless charger

Conclusion:

On my observation through this person project, my find out is that the wireless charger is consists of two portable platform that can be easily moved each other but there are some distance that these two platform must be keep so that the power can be transferred wirelessly. Otherwise, the power cannot be transferred. The distance that this two portable platform must be keep is around 3 cm. The working principle of this project is in this wireless charging system there are two circuits, a transmitter circuit and a receiver circuit (as being mention as two portable platform).

• The transmitter circuit consists of step down transformer of 230/12V. This transformer steps down 230V AC from main supply to 12V AC. Then that 12V AC is converted into 12V DC with the help of bridge rectifier. After that a 2200/25V capacitor is used to filter the ripples and pure DC is supplied. Then the oscillator circuit oscillates at 10MHz and with the help of transmitting coil it transmits the wireless power.
• The receiver circuit receives the power through receiving coil and passes through voltage multiplier circuit (consisting of diode and capacitor voltage multiplier) and through that voltage the mobile charging is achieved.