FYP II - WEEK 10

Objective: The charging cable for electronic device

Analysis/Discussion:

This is the last circuit that need to be constructed. As this project is aiming on the charging of low powered device such as smartphone and mp3, there is one circuit of data cable that use to transfer the power supply from voltage regulator.

The circuit consist of 4 wire which are, the positive terminal, negative terminal, 2V data wire, 2.5V data wire.

FYP II - WEEK 9

Objective: Measuring input and output voltage

Analysis/Discussion:

The input and output voltage is crucial result in this projects as it will be used to calculate the system efficiency. The input voltage was measured after it is being inverted to AC signal while the output voltage was measured after it is being rectified to DC signal. In other word, the input voltage was in transmitter circuit while the transmitter circuit was in receiver circuit.

The output voltage of the receiver circuit was measured in two situation. The maximum DC voltage of 1 cm distance and the maximum distance of 5V output voltage. This is the step taken for all design of coils and the data measured has been recorded.

FYP II - WEEK 8

Objective: Designing copper coil for transmitter and receiver circuit

Analysis/Discussion:

The coil design for transmitter and receiver circuit was based on the number of turns of coil and the diameter of the coil. For this projects, the coils was design into 7 different sizes. This design is the step taken to get the result of the relationship between coils design and output voltage transfer.

The designing of the coil as tabulated in table below: