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Solenoid
St. Louis Motor Demonstration
Description
Students can explore how a simple electric motor works by doing a series of investigations. This St. Louis motor can be adjusted so students can study the effect of voltage and position of the brushes on the commutator. The motor consists of a two pole DC armature. The brush holder, with two heavy binding post terminals, can be rotated for experiments. The permanent bar magnets, supported by clamps, can be adjusted to the desired location. This apparatus requires 4 D cell batteries with holder (not included) or a power supply and two connecting leads (not included).
Telegraph Kit
Description
Students can discover how people communicated long distances before the telephone with the Telegraph Kit, students can learn Morse code and even send a secret message to a friend. Kit includes: D cell battery holder, contact key, light bulbs, alligator connector cords, buzzer and instruction manual
Thermocouple, Double
Thermocouple, Single
Thermopile
Three Step Inductor
Description
This three step inductor consists of a coil of enamelled copper wire wound over an insulated spool. The coil consists of 4 layers of 200 turns each. The tappings at 200, 400 and 800 turns are brought out at 4 mm sockets. The output inductances at these tappings are as follows. No. of turns Resistance 200, Inductor 0.3 mH, Resistance 0.6Ω No. of turns Resistance 400, Inductor 1.2 mH, Resistance 1.2Ω No. of turns Resistance 800, Inductor 5.0 mH, Resistance 2.6Ω. One can easily change the inductor value of the instrument on just inserting a soft iron core inside the bobbin
Trans-Ratio
Description
Trans-Ratio is a simple transformer system that allows students to investigate the relationship between primary voltage, secondary voltage and the turns ratio. The Primary coil has tappings at 200, 400 and 600 turns while the Secondary has 100, 200, 300, 400, 500 and 600 turns all brought out to 4mm sockets. An AC supply of upto 6 V as well as AC voltmeters are required for demonstration purpose.
Transformer Stand and Core
Description
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
Variable Inductor
Description
The enamelled wire winding and a cylindrical soft iron core are built into this unit. The iron core displacement inside the winding can manually adjusted by the knob to give precise measurements up to 1.3 H. Connections are made through 4 mm sockets.Specifications:
Resistivity: 0.0165 W/m; Inductance: 0.15 to 1.3 H; Voltage: 30 V AC or 60 V DC.
Voltaic Cell Set, Student
