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.

FYP 2 (WEEK 2)

Factors affecting inductance

There are four basic factors of inductor construction determining the amount of inductance created. These factors all dictate inductance by affecting how much magnetic field flux will develop for a given amount of magnetic field force (current through the inductor's wire coil):

NUMBER OF WIRE WRAPS, OR "TURNS" IN THE COIL: All other factors being equal, a greater number of turns of wire in the coil results in greater inductance; fewer turns of wire in the coil results in less inductance.

Explanation: 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.

COIL AREA: All other factors being equal, greater coil area (as measured looking lengthwise through the coil, at the cross-section of the core) results in greater inductance; less coil area results in less inductance.
Explanation: Greater coil area presents less opposition to the formation of magnetic field flux, for a given amount of field force (amp-turns).

COIL LENGTH: All other factors being equal, the longer the coil's length, the less inductance; the shorter the coil's length, the greater the inductance.
Explanation: A longer path for the magnetic field flux to take results in more opposition to the formation of that flux for any given amount of field force (amp-turns).

CORE MATERIAL: All other factors being equal, the greater the magnetic permeability of the core which the coil is wrapped around, the greater the inductance; the less the permeability of the core, the less the inductance.
Explanation: A core material with greater magnetic permeability results in greater magnetic field flux for any given amount of field force (amp-turns).

Week 11 (FYP Semester 1)

As shown in this video below,it depicted that the value of capacitor in Receiver Circuit influence the distance and brightness of LED. The value of capacitor directly proportional with the distance of Receiver and Transmitter circuit. The higher value of capacitor in Receiver circuit, the higher the distance it can go further.