Description
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Resistance Box
Description
Resistance Box kit is an excellent device, which provides a very good learning technique in making different combinations of resistances, either in series or in parallel or in both ways to obtain the desired value of resistance for any circuit application.
It consists of 10 resistors of equal values, i.e., 10Ω , 2 watts.
These resistances are of ± 1% tolerance
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Electric Motor St. Louis
Description
The motor consists of a two pole armature mounted between the ends of two bar magnets. The armature has a two section commutator and a pair of slip-rings on its shaft and is so constructed that the wire cannot slip off the iron core. The upper bearing and brushes for the commutator are mounted on a strong upright. Separate brushes are provided for the commutator and for slip rings and each are connected to a terminal. The magnets are held in position by thumb screws.
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