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Induction Accessories Set (P- 7900)
Comprises a six turn copper coil to show the production of a heavy current at low voltage by the melting of a nail, a solder trough to demonstrate the principle of the induction furnace and a set of aluminium rings to show 'Thomson's ring effect. Two rings are 'solid', the third split to show that the rings must be continuous for levitation' to take place.
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Worcestor Circuit Board Kit (P-7880)
Consists of base board with nos. of metal connection pillars, nos. of flexible connection strips and accessories comprises of 18 bulbs 1.25V, 0.25A, 9 connectors with lamp holders, 12 plain connectors, one connector with rheostat, 1 rectifier, 1 resistor, 2 leads with crocodile clips, 2 leads with 4mm plug and crocodile clips, 2 crocodile clips, 2 bell push, 2 iron nails, 1 length each bare copper wire, Eureka wire, plastic covered copper wire, 1 hard board disc drilled, 4 pencil leads, 1 copper foil, 1 steel wool piece. Supplied in card board box.
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Demonstration Transformer (P-7885)
Operates on 220V A.C. mains, 50Hz. Two secondary coils to produce 6V and 12V at 2A can be mounted one by one, over the primary coil. The mains coil is provided with 1meter of two core cable and secondary coils are mounted with 4mm socket terminals. Students can easily mount or demount the transformer unit to get a 6V or 12V power supply as per requirement.
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Dissectible Transformer (P-7907)
Designed primarily for demonstration of basic principals of the A.C. transformer. The coils and cores will also serve as the basis of many experiments in electromagnetism using either direct or alternating currents. Supplied with 1 Clamp base, 1 Laminated 'U' core, 1 Laminated armature, 2 Soft iron pole pieces, 1 Coil of 300 turns 4 amp., 2 Coils of 600 turns 2 amp., 1 Coil of 1200 turns 1 amp., 1 Coil of 3600 turns 0.3 amp, 1 Coil of 12000 turns 0.05 amp. All coils are enameled copper wire wound round on high impact plastic moulded bobbins. The base is provided with tommy -bar screw to hold 'U' core. It consists of following components : a) Alloy stand with detachable clamping arms.
b) U & I laminated cores of cross section 32 x 25mm.
c) E & I laminated cores of cross section 32 x 25mm.
d) Six coils, with 4mm socket terminals wound on plastic bobbins
e) A pair of pole pieces. Note : Coils of different values and turns are also available.
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Orested's Apparatus (P-7910)
To explain the effect of flow of current in conductor on the magnetic needle. Consist of a rectangular section of copper wire of dia. 6mm, mounted on an insulating base over a post on the axis of which a 75mm magnetic needle is mounted. When current flows in the conductor, needles moves around depending on the direction of flow of current.
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Induced Current Apparatus (P-7950)
Used for the study of induced currents, comprises of two solenoids with one smaller of dia to fit in the bigger one. The resistance of the first solenoid is 0.5ohms wound on former 110 x 30 (lxd) and second having resistance of 120 ohms (Approx.) on former 110 x 82mm (lxd). Both the solenoids are prepared with enamelled copper wire and two 4mm socket terminals are mounted on each. Supplied complete with one soft iron core, works on 6-12 V AC/DC
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Induction coil Box Form (P-7975)
Box Form, coils are wound with insulated copper wire and in wooden case, fitted with adjustable alloy contact, on/off switch, 2 socket terminals, a pair of pointer electrodes with insulated handles for adjustment of spark gap, operates on 6-12V supply Spark Length (Approx.) a) 10 mm b) 25 mm c) 50 mm d) 75 mm
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Induction Coil, Rukmkorff (P-7976)
Spark length approx 30mm, operates on 6 to 8 V D.C. Similar to Cat No. P-7975 as above. A fully adjustable trembler system is incorporated and spark suppression capacitors are housed in the base.
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