Electric Bell

Description

For use on double 'C' core, wound with 1,100 turns of 22 swg copper wire with a resistance of about 6 ohms and inductance of about 15 henries, size 100 x 60 x 55 mm approx.

Description

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)

Description

The large size of this battery operated apparatus allows students to better understand the operation of this basic circuit. Works on 9 V Battery. Includes Instructions. On wooden stand.

Description

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.