With this simple electric motor model students can investigate the relationship between voltage supplied to rotor and polarity / position of magnets.
On applying 6V DC to 4mm sockets, the rotor will begin to rotate across its vertical axis.
This apparatus is an effective demonstration of how the earth wire and fuse act together to protect both the user and the appliance.
When the appliance is connected correctly and the LEDs in the appliance will illuminate to show the appliance is working.
A fault is then demonstrated by swapping the live wire from inside the appliance to the case to show either the fuse melts (protecting the user and appliance) or in the case of no earth wire, the LEDs illuminate to indicate the passage of current through the person to ground.
The fuse is easily visible and can be seen to ‘blow’ when a fault occurs.The unit is supplied with 10 m of fuse wire and full instructions.
A 12 V DC power supply is required.
Connections are made via 4 mm shrouded sockets.
Enables students to investigate nature and properties of electricity by using simple circuits which are easily constructed on a base board.
The connector system uses P.C.B. strips with cut-out sections whose ends can easily be inserted in spring terminals, ensuring low contact resistance and ease of connection.
The kit consists of :
1. Baseboard, plastic, with spring terminals and three battery holders. (1)
2. Batteries. (3)
3. Lamps 1.25 V MES. (10)
4. Lamp holders mounted on PCB connectors. (6)
5. Plain connector PCBs. (10)
6. Wire wound potentiometer with crocodile clip connections. (1)
7. Silicon diode. (1)
8. Resistor 3.9 ohm 2.5 W (1)
9. Pair Leads, red, with crocodile clip at each end. (1)
10. Pair Leads, black, with crocodile clip at each end (1)
11. Pair Leads, yellow, with crocodile clips at each end. (1)
12. Switches mounted on PCB. connectors (2)
13. PVC rod 15 cm long (1)
14. Soft iron nails, 5 cm long (2)
15. Bare copper wire, swg 20 (2 m)
16. Bare eureka wire, swg 34 (2 m)
17. Plastic covered copper wire (2 m)
18. Electrode support (1)
19. Pencil lead electrodes (10)
20. Sheet copper foil, 150 mm square (1)
21. Pack Steel wool (1)
22. Instruction manual in English. (1)
To distinguish between the conductors and insulators.
Kit contains five strips of different material (wood, acrylic, copper brass and aluminium), one lamp and one 9 V battery mounted on plastic base.
Apparatus is designed primarily for demonstration of the basic principles of transformers.
It consists of a laminated U-core with laminated I-core, both with 32 x 25 mm cross section to form a closed core of size 102 x 127 mm.
Heavy aluminium alloy stand with removable clamping rods, 2 pole pieces, each 65 x 30 x 25 mm with one end cone shaped, to accept support rod and shading ring.
Poles also have a hole drilled through lengthwise to take a light beam. 300 turns 600 turns 1200 turns 3600 turns 12000 turns
To demonstrate the characteristics of simple and primary cells.
Consists of a plastic jar with a screw-on plastic rim containing two adjustable brass electrode holders, eight electrodes of different metals and a porous ceramic cup.
With Instructions.
The motor consists of a two pole armature mounted between the ends of two bar magnets.
The armature has a two section commutator and a pair of slip-rings on its shaft and is so constructed that the wire cannot slip off the iron core.
The upper bearing and brushes for the commutator are mounted on a strong upright.
Separate brushes are provided for the commutator and for slip rings and each are connected to a terminal.
The magnets are held in position by thumb screws.
With driving wheel, to generate current, mounted on polished wood base with driving wheel in vertical position, a lamp holder and a lamp.
Output DC Current
Output both DC and AC current
Reviews
There are no reviews yet.