GW Instek GPC-3030 Analog DC Power Supply

• Triple Output
• 5V, 3A Fixed output

 

British Optical Lens Co-Bi-Concave lens

 

The resistance of a wire depends on the resistivity of the wire。

 

Constantant swg 28 vs Nichrome swg 28 vs Cooper swg 28

Nichrome, a non-magnetic 80/20 alloy of nickel and chromium, is the most common resistance wire for heating purposes because it has a high resistivity and resistance to oxidation at high temperatures.

A MODEL TRANSFORMER

Working Principle of A Transformer

• A transformer consists of a primary coil and a secondary coil wound on a soft iron core.
• When an alternating current flows in the primary coil, a changing magnetic flux is generated around the primary coil.
• The changing magnetic flux is transferred to the secondary coil through the iron core.
• The changing magnetic flux is cut by the secondary coil, hence induces an e.m.f. in the secondary coil.
• The magnitude of the output voltage can be controlled by the ratio of the number of primary coil and secondary coil.

 

Short circuits

 

A short circuit is a fault.  It means there is a very low resistance conducting path from one side of a component to the other. 

Audio Signal Generator AG-202A

Country: Japan

Manufacturer / Brand: Kenwood, Trio-Kenwood Inc.; Komagane

Year: 1970 ??

 

Diffraction Grating

To produce a bright and sharp interference pattern for light, a diffraction grating is used in preference to a Young's double slit.

A diffraction grating consists of many equally-spaced slits placed extremely close together, e.g., 300 lines/mm.

 

Plug key

A plug key is an electronic component whose function is similar to that of a switch. A small metallic key is present which when pressed the switch turns on and when we remove it from its base the circuit gets off.
 

Light bulbs in a series circuit.

In a series circuit, every device must function for the circuit to be complete. One bulb burning out in a series circuit breaks the circuit. 

How is the voltmeter and ammeter connected in a circuit?

A voltmeter is connected in parallel with a device to measure its voltage, while an ammeter is connected in series with a device to measure its current.

 

 

Light bulbs in a parallel circuit.

 

Light bulbs in parallel

Two bulbs in a simple parallel circuit each enjoy the full voltage of the battery. This is why the bulbs in the parallel circuit will be brighter than those in the series circuit. Another advantage to the parallel circuit is that if one loop is disconnected, then the other remains powered.

Induced current

 

Basic Circuit- Series Circuit

In a series circuit there is only one path for the flow of charge, or current, as it leaves the power supply and travels through the circuit.  Therefore all of the current from the power supply travels through each circuit component 

 

Magnetic field lines around a straight conductor carrying current.

 

A magnetic compass shows the presence and direction of the magnetic field around a straight length of current-carrying wire.

The field direction can also be determined using The Right-Hand Grip Rule.

Griffin & George Limited-Slit Plate for Griffin Raybox

 

Polaroid filter or Polariser

A Polaroid is artificially prepared thin, large sheet of crystalline polarizing material capable of producing plane polarized light. 

 

Griffin & George Limited -Steel Springs

 

Copper Rod and Brass Rod

 

Brass Rod 黄铜棒

Solid brass rods are strong pieces of brass that can be cut to a specific length and diameter for use in applications where corrosion resistance and electrical conductivity are both important. Comes in a variety of lengths and sizes and can be used for many different fittings and fasteners.

Copper Rod

Copper rod is used as raw material for the manufacturing of electric wire and cables and is produced by either our continuous casting or our oxygen-free continuous up-casting mills.

Simple d.c. motor kit

 

Enamelled Copper Wire (Magnet Wire)

Enamelled Copper Wire (Magnet Wire) is an insulated copper (or aluminium) electrical conductor used in motors, transformers and other electromagnetic equipment. When wound into a coil and energized, magnet wire creates an electromagnetic field.

DIY Ripple tank

Cara mudah untuk membuat tangki riak anda sendiri di rumah.

 

Pezon & Michel- Resistant invisible nylon thread

P et M was founded in Amboise, near Paris, after the end of 1st World War.

 

Griffin & George Limited - Bare Copper Wire 32 swg 50g

 

Laminated C Shape Iron Core

Laminated magnetic cores are made of stacks of thin iron sheets coated with an insulating layer, lying as much as possible parallel with the lines of flux. The layers of insulation serve as a barrier to eddy currents, so eddy currents can only flow in narrow loops within the thickness of each single lamination.

 

NICHROME WIRE - SWG 28

 

Nichrome is a family of alloys of nickel, chromium, and often iron commonly used as resistance wire, heating elements in things like toasters and space heaters.

Dwi celah Young 1 mm dan 0.5mm

 For students tackling the theory of Young's double-slit experiments.