DEMONSTRATION DYNAMO AC/DC S1016

SCIENCE, Class X, Chapter - 13, Magnetic effects of electric current.

It consists of a hand driven pulley attached to the pulley of dynamo by means of a rubber belt. It generates both a.c & d.c current. The whole unit is mounted on a plastic base. Provided with two pairs of 4mm sockets. Supplied with two nos. of LEDs.

DEMONSTRATION MOTOR SH534

Suitable for demonstration of a DC motor, having a two pole armature wound with enamelled copper wire and a detachable permanent magnet (N-S indicated) mounted on a base. External connections via 4mm sockets.
Operating voltage : 4-6 V DC
Height : 125mm(approx.)

MOTOR WITH ADJUSTABLE BRUSHES SV242A

SCIENCE, Class X, Chapter - 13, Magnetic effects of electric current.

Observable components of motor. A variety of demonstrations can be performed on this basic apparatus e.g. Magnetic fields, D.C. Motors,series and shunt fields and generators. There is a two-pole D.C. Armature which can be connected to a mechanical device or to another motor for motor and generator demonstrations. Adjustable brushes for contact with commutators. White plated spring brass clamps, which shows the effects of pole separation, supports the two permanent bar magnets.

Scope of Supply:

Cat. No.	Item Name	Qty.
SV244	St. LOUIS MOTOR	1
	Instruction Mnaual	1

Additionally required items not in scope of supply.
1. Power supply (Cat No. SE080)

DECADE RESISTANCE BOX SE097

PHYSICS, Class XII, Part - 1, Chapter - 3, Current electricity.

These resistance boxes incorporate specially designed switches for precision and rapid measurement of resistance. The dial assembly is mounted on a panel and enclosed in a box for protection from dust and acid fumes.

Salient features :

• It uses metallic film resistance which is better than coils.
• 4 mm safety sockets are provided.

Range in ohms: 1,10,100,1000
Total Resistance in ohms: 11110
Dials: 4

RHEOSTAT

SCIENCE, Class X, Chapter - 13, Magnetic effects of electric current.

Resistance wire wound on a pipe having dia 5.6cm,perforated cover for touch protection. Electrical connections via three 4 mm safety sockets. It can be used as fixed resistor and potentiometer. Fourth socket is used as earth.

Porcelain Pipe Closed	Enamelled Pipe Closed	Length (cm)	Resistance (Ohms)	Current (Amps.)
SN771	SF819	25	10	5.7
SN774	SF820	25	33	3.1
SN772	SF821	25	100	1.8
SN775	SF822	30	330	1.0
SN773	SF823	35	1000	0.57
SN776	SF824	30	3300	0.31

DECADE CAPACITANCE BOX SE774

Each dial operated by a knob. Special type of switches are provided to minimize the residual capacitance.

Salient Features:

• High quality switches to minimize residual capacitance.
• 4 mm safety sockets are provided.

Range in Microfarad (µF): 0.001, 0.01 & 0.1
Total Capacitance (µF): 1.11
Dials: 3

MAGNETIZING / DEMAGNETIZING COIL SH521

Ideal for demonstration of magnetizing or demagnetizing iron bar or strips etc. It consists of a solenoid mounted on a plastic base with switch and 4mm sockets.

Solenoid: 250 x 25 mm approx. (L x ID)
Operating voltage: 12 V AC or DC at 6A

DIGITAL METER

Housed in rectangular shaped plastic body provided with LCD display. Size 14 x 10 x 10 cm approx. Fitted with two terminals and on / off switch. Operating voltage 9V DC battery. Supplied without battery.

Display : LCD type 3½ digit

Cat. No.	Ranges DC
SA594	199.9µA
SA595	1.99mA
SA596	19.99mA
SA597	199.9mA
SA598	1.99A
SW173	19.99A
SA599	199.9mV
SA600	1.99V
SW174	19.99V
SA601	199.9V
SA602	500V