DYNAMO MOTOR MODEL 1739
A versatile model to demonstrate the working of both dynamo and motor. Driven
with a rubber belt on a hand wheel a two pole armature rotates in a magnetic
field provided by a permanent magnet. The D.C. current thus produced glows a
torch lamp at two 4mm sockets. To demonstrate the apparatus as a motor the belt
is taken off and a DC current of 4 to 6 volts is applied at two 4mm sockets which
sets the armature is motion. All fitted on wooden base.
SMALL MOTOR/GENERATOR 1740
For use with the large motor/generator in comparing power input and output
by driving each in turn with the other and metering the voltages and currents.
Uses a smaller 1.5 to 4.5V motor. Dimensions of laminated wooden base 155
x 105 mm.
LARGE MOTOR/GENERATOR 1741
For use as a tlriving unit or dynamo. Comprises a 2 to 6V DC, motor provided
with a l50mm diameter V pulley. Dimensions of laminated wooden base 155 x
105mm.
ELECTRIC MOTOR KIT 1742
Small version of D.C. electric motor. Construction can be done by student by
joining all parts contained in plastic box and can be dismentelled easily
Workable on 4-6 volts.
SOLAR CELL UNIT 1745
High output solar cell connected to a low inertia electric motor and connected
through 4mm terminals to allow electrical calculation of energy output/consumption
levels. Can also be used in energy conversion experiments with provision
for metering current.
SOLAR MOTOR WITH FAN 1746
See Solar and Wind Energy Section.
ELECTRONIC CIRCUIT TRAINER KIT 1747
Comprises range of Resistance, Capacitor, Diode Transformer Inductor, Potentiometer, Switch and Transistor etc., on insulated panel with pin contacts for component connection. A bunch of connecting leads is provided to makeup the experiment. Also a wooden storage box.
DEMONSTRATION CAPACITOR (zener diode) 1748
Comprises two capacitor plates with accessories.
P-N-P and N-P-N TRANSISTOR UNIT 1749
Mounted on transparent base, with 4 mm colour coded sockets, with circuit diagram printed for demonstration.
WHEAT STONE BRIDGE 1750
The bridge is a self contained unit with the measuring range 0.001 to 11.11
meg ohms built in Galvanometer by measuring resistances it contains with
4 decade series dials of 10x1, 10x100, 10x1000 ohms with single ratio dials
of 0.001,0.01,.1,1,10,1000 ohms giving multiple ratio.
INDUSTRIAL DOUBLE KELVIN BRIDGE 1752
The bridge is for measurement of low resistance, such as shunt resistance determination
with current up-to 10amp.
Measurement Range: 0.2 Micro Ohms to 11 OHMS
Multiplier Range: In 5 multiple of 0.01, 0.1, 1, 10, 100 Ohms. Main Dial:
It comprises a single dial of 10x0.01 Ohms with slide wire of 0.01 Ohms
with circular
scale having 100 Main divisions. The scale is further Sub divided into 500
equal parts each small division (at Ratio XI) represents 0.00002 Ohms or
0.2 Micro Ohms. The slide wire is fitted with a SILVER CONTACT to eliminate
the
contact resistance error. A terminal is provided on the disc fitted on the
circular scale for True Zero setting. Complete with Conductivity attachment,
Spot Reflecting Galvanometer, Heavy duty Source 10 Amp. with working manual & 2
potential leads.
KOHLRAUSCH CONDUCTIVITY BRIDGE 1755
For determining the Electrolytic conductivity & Resistance. Main Features:
A circular Slide wire is calibrated from 0 to 10 ohms. A ratio dial with six
multiple ratios of 0.1, 1, 10, 100, 1K & 10K Ohms is connected in series
with the slide wire giving 0.01 to 100K ohms with Electrolytic cell with two
platinum black coated electrodes. Complete with Audio Oscillator and Head Phone.
HUMBERGER CELL (Conductivity Cell) 1755A
Dip type with platinum electrodes, for use with above Bridge
VOLTAGE MEASUREMENT USING POTENTIOMETER 1760
Crompton Potentiometer Measurement up-to 1.75V (can be measured up-to 300V
with the help of volt ratio box) Complete with one coars
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