FYP 2 (WEEK 9)

        i.            Measurement on distance

The result below shows the comparison between using the fixed diameter of turns and number of turns.

a)When Transmitter size=18N,10cm and

    Receiver diameter of turns is fixed, d =9cm

Transmitter		Receiver		Maximum distance (cm)
No. of turns	Diameter of turns	No. of turns	Diameter of turns
18N	10cm	10N	9cm	5cm
		12N	9cm	6cm
		14N	9cm	7cm
		20N	9cm	15cm

From the Graph on Distance 1, observation is made to achieve the maximum distance. The  transmitter size is 18N,10cm. The diameter of turns at receiver is fixed for 9cm.The maximum distance stated when the receiver at the size 20N,9cm which is 15cm. The lowest value stated when the receiver at the size 10N,9cm which is 5cm. The graph shows gradually increased because the transmitter size is bigger than the receiver size.

     

FYP 2 (WEEK 8)

when number of turns is fixed to 12 and value of diameter of turns has varied to 4 values which are 7,9,10,12.

Number of turns (N)	Diameter of turns (cm)	Inductance (mH)
12	7	3.244mH
12	9	4.376mH
12	10	4.957mH
12	12	6.147mH

The graph when the number of turns =12 is fixed;

Figure shows graph on the Inductance VS Diameter of Turns. The number of turns has fixed to be 12 and the diameter of turns has varied to 4 values which are 7, 9, 10, 12. The values of inductance are getting increase as the diameter of turns increasing. The highest value of inductance is 6.147mH for 12cm diameter, and the lowest value of inductance is 3.244mH for 7cm diameter. The greater coil diameter presents less opposition to the formation of magnetic field flux for a given amount of field force (amp-turns).

FYP 2 (WEEK 7)

Tabulated Inductance Value and Graph for Circular Coil

when diameter of turns is fixed to 9 cm and value of number of turns has varied to 4 values which are 10,11,14,20.

Number of turns (N)	Diameter of turns (cm)	Inductance (mH)
10	9	1.863mH
11	9	3.677mH
14	9	5.957mH
20	9	12.16mH

The graph when the diameter of turns = 9cm is fixed;

Figure shows graph on the Inductance VS Number of turns. The diameter of turns has fixed to be 9 cm and the number of turns has varied to 4 values which are 10, 11, 14, 20. The value of  inductance are getting increase as the number of turns increasing. The highest value of inductance is 12.16mH for 20 turns, and the lowest value of inductance is 1.863mH for 10 turns.

It is proved the theory which is more turns of wire means that the coil will generate a greater amount of magnetic field force (measured in amp-turns), for a given amount of coil current.

FYP 2 (WEEK 6)

The copper wire used in this project is 23 AWG.

Calculation of coil inductance:

Where:

N= Number of turns

µ0 = Permeability of coil (4π x 10^-7)

r = Radius of coil

a = Radius of cross sectional

Inductance is typified by the behaviour of a coil of wire in resisting any change of electric current through the coil. This behaviour is followed by the Faraday’s Laws.

Faraday’s Laws stated:

Any change in the magnetic environment of a coil of wire will cause a voltage(emf) to be induced in the coil. No matter how the change is produced, the voltage will be generated. The change could be produced by changing the magnetic field strength, moving a magnet toward or away from the coil, moving the coil into or out of the magnetic field, rotating the coil relative to the magnet, etc.

FYP 2 (WEEK 5)

Last week, I posted the circuit of transmitter and receiver circuit of wireless power transfer. I tried construct by myself and it did work. This is the video show how it works.

FYP 2 (WEEK 4)

This project involves 2 part of circuits which is the transmitter and the receiver. This 2 circuit will produce the electromagnetic between windings and in result the output also triggered.

Transmitter circuit

Receiver circuit

These are the list of equipment that being used in the project.

FYP 2 (WEEK 3)

The essential component for this project is the copper coil. The 23 AWG copper wire is used for this project. This wire will be used for the transmitter coil and receiver coil design.

Below is the table regarding to the specifications of copper coil based on the American Wire Gauge (AWG). The windings, sizes, and types of wire will be determine the distance and values of output.