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Post Office Box, Plug Type
Post Office Box, Wheatstone Bridge
Description
With two ratio dials of 10,100 and 1000 ohms each and a resistance arm of four dials, each of ten coils of 1, 10, 100 and 1000 ohms, giving total resistance of 11,110 ohms with 4 mm socket terminals for battery, galvanometer and unknown resistance. Highly stable resistances are used. Accuracy ±0.1%
Potentiometer
Power Supply, 2 V
Primary and Secondary Coil
Description
The apparatus demonstrates the principle of Electromagnetic Induction and helps explain the concept of a transformer. Primary and Secondary coil consist of coils mounted on plastic spools, with 2 binding posts on each coil. You can slide the primary coil inside the secondary coil. Also includes a soft iron core for induction experiments. Primary coil has 480 turns while secondary coil has 3800 turns. Requires a galvanometer and bar magnets, not supplied with apparatus.
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
Resistance Box, Plug Pattern
Description
All plugs are turned to a fine standard taper and are interchangeable. These are moulded in fluted plastic tops. The brass blocks are undercut and are fitted to a thick insulating plate. Heavy 4 mm brass terminals are used. Coils are non-inductively wound and are treated to be strain-free. Coil values are engraved on the plate and an infinity plug is also included. Accuracy ±0.5% for 0.01 to 0.05 ohm coils, ±1% for the rest 0.01 to 0.1 ohm, Total 0.2 ohm 0.1 to 1 ohm, Total 2 ohm 0.1 to 5 ohm, Total 11 ohm 0.1 to 10 ohm, Total 21 ohm 0.1 to 50 ohm, Total 111 ohm 0.1 to 100 ohm, Total 211 ohm 0.1 to 500 ohm, Total 1111 ohm 1 to 10 ohm, Total 20 ohm 1 to 50 ohm, Total 110 ohm 1 to 100 ohm, Total 210 ohm 1 to 500 ohm, Total 1110 ohm 1 to 1000 ohm, Total 2110 ohm 1 to 5000 ohm, Total 11110 ohm
Resistance Coil, Economy
