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SWITCH UNIT
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Switch Unit

(HL-1286)
A double-pole double throw knife switch for connecting the motor/generator. The socket terminals are labelled battery, motor and lamp respectively.
 
Dimensions of laminated wooden base 155 x 105mm.

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Switch Triple Light Unit
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Switch Triple Light Unit

(HL-1270)
connecting units wKPHh provide the energy to light the lamps and fulfils the requirements of showing the change over switch.The alignment of the pulleys for interconnection of the units with the Drive Belts is assured and therefore provides an efficient performance without the use of 'G' clamps. The Switch is a double pole / double throw knife switch for the connecting the motor - generator energy sources or the Lamp Unit.
 
The Triple Light Unit comprises 3 MES lamps wKPHh are connected parallel and provides an indication of the energy out puts form the various sources and also indicates the energy requirement to light each individual lamp.
 
Specification: Switch Double Pole / Double , ThrowLamps 3.5V, 0.25A, MES

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LINE SHAFT UNIT
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Line Shaft Unit

(HL-1249)
Comprising a 6mm steel shaft mounted in brackets with nylon bearings. One end carries an aluminium V pulley 56mm diameter, and the other over hanging end, is fitted with a cord anchoring collar.
 
Dimensions of laminated wooden base 155 x 105mm.

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LAMP UNIT, TRIPLE
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Lamp Unit, Triple

(HL-1285)
Three lamp holders are connected in parallel. Supplied complete with three lamps 1.25 V 0.25 A M.E.S.
 
Dimensions of laminated wooden base 155 x 105mm. 

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Small Motor Generator Unit
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Small Motor Generator Unit

(HL-1284)
Again a high quality electric motor is used to ensure a long trouble free life. The primary purpose of this unit is to compare the power input and output with the Large Motor Generator.
 
Specification : Drive Pulley 12mm , Operating Voltage 1.5 to 4.5V

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Large Motor Generator Unit
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Large Motor Generator Unit

(HL-1259)
A high quality motor used for driving a dynamo. Electrical connection is via two 4mm sockets.
 
Specification :Operating Voltage 2 to 6 V DC
Drive Pulley 12mm
A high quality motor used for driving a dynamo. Electrical connection is via two 4mm sockets.

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HAND WHEEL DRIVING UNIT
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Hand Wheel Driving Unit

(HL-1283)
The driving and output pulleys are both 75mm diameter, and the intermediate pulley is 20mm diameter giving a step-up ratio of 3.75.
 
Dimensions of laminated wooden base 155 x 105mm

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FRICTION CALORIMETER UNIT
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Friction Calorimeter Unit

(HL-1262)
Comprising a brass cylinder, internal size 27 x 16mm diameter, with and integral V pulley in the base of the cylinder and a 6mm diameter steel shaft wKPHh fits into a bearing block. A vertical pillar carries the corklined friction arms and thermometer support. Supplied without thermometer.
 
Dimensions of laminated wooden base 155 x 105mm.

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Wave Form Helix
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Wave Form Helix

(HL-1272)
For demonstration of wave motion, pulses, reflection and interference, steel wire close wound helix, 19 mm diameter closed length 3 mtrs. extending to approximately 9 mtrs.

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Wave Form Helix, Slinky
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Wave Form Helix, Slinky

(HL-1243)
For demonstration of wave motion, helical coil of flat section tempered steel, coil dia 75 mm closed length 11 cms fully extended 3 meters.

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WAVE MOTION APPARATUS
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Wave Motion Apparatus

(HL-1257)
For demonstrating longitudinal and transverse motion, consisting of 18 acentric Aluminium disc supporting a series of metal rods. On revolving the handle, transverse waves are obtained with bent, straight rods. Complete on wooden box.

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VAN DE GRAAFF GENERATOR MOTOR DRIVEN
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Van De Graaff Generator Motor Driven

(HL-1261)
The low voltage powered models is designed for operation on a 3 to 5 VB d.c. supply capable for providing in a current of 1.5 A. Power input is via a pair of colour coded 4mm sockets. Mains operated versions are provided with 1.5m of three core mains cable, the earth core of the mains lead being connected to the metal structure of the apparatus. Both voltage and mains versions also have independent 4mm earth sockets with discharger 75mm dia with handle.

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WIMSHURST MACHINE
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Wimshurst Machine

(HL-1282)
With 2 plastic plates dia 30cms, each carries aluminium foil segment. Maximum spark length 75mm. The neutralising bars are provided. The collecting brushes are carried on a large insulating beam. A pair of high capacity leyden jars are incorporated wKPHh may be connected or disconnected as required. The complete apparatus is mounted on a wooden base with rubber feet.
 
Dimensions 450x175x500mm length x width x height.

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BIOTS APPARATUS
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Biots Apparatus

(HL-1255)
With insulated handles diameter 50mm. Can be used in conjunction with the hollow conductor sphere for showing that an electrostatic charge resides on the outer surface of a conductor (by removing the outer surface and leaving the inner sphere uncharged). Complete with spherical conductor on insulated stand with base.

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BIOTS APPARATUS
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Biots Apparatus

(HL-1247)
With insulated handles diameter 50mm. Can be used in conjunction with the hollow conductor sphere for showing that an electrostatic charge resides on the outer surface of a conductor (by removing the outer surface and leaving the inner sphere uncharged). Complete with spherical conductor on insulated stand with base.

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