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KNIFE SWITCH Knife Switch, Double Pole Double Throw (0351)
For making / breaking of Low voltage electrical circuits, molded plastic base with plated spring metal contacts and screw connectors.
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COMMUTATOR IM.I.P. REVERSING KEY) (0352)
For use in circuits, where a rapid changeover of polarity is required. The switch comprises a rotatable spring loaded beam of insulating plastic with two brushes each connected to 4mm socket terminals. The brushes and contact strips are arranged on the beam and base respectively so that when beam is turned from one extreme to other, the polarity of connections is reversed. All brushes and contact strips of laminated phosphor bronze brushes ensuring good contact and long life.
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ELECTRIC FIELD APPARATUS (0353)
For investigation of electric field patterns due to various electrode configurations and also permits easy demonstration of the related concepts to a group of students through overhead projector. The apparatus comprises a clear plastic dish and a transparent rectangular base carrying a pair of 4mm socket terminals that can also hold adjustable electrodes. Includes a set of 6 electrodes - two point source electrodes, two line source electrodes and two circular rings of 35 and 70mm diameter respectively.
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D1SSECTIBLE TRANSFORMER (0354)
For demonstration of basic concepts associated with electromagnetic induction such as AC transformers, induced currents and their effects etc. Also call Demountable Transformer. Comprises a U-Core and I-Core of rectangular cross section, made from high grade laminations to minimize the induction losses, with size of the I-core suitable to sit completely over U-core to provide a continuous rectangular annular laminated block. Arms of the U-core takes various coils included for different experiments. All coils included are wound from enameled copper wire on insulated rectangular plastic bobbin and are totally covered to prevent any accidental direct contact with the winding. 4mm socket terminals provided at the front for electrical connections except for 600 turns coil that operates on AC mains and is provided with a two core flexible lead. With number of turns of coil clearly printed on front and direction of winding indicated on top. The bobbins have rectangular hole at their center matching the cross-section of U-'core arms to sit on them with negligible air gap for minimizing induction losses. Also included is a pair of soft iron pole pieces to sit on top of U-core arms. One end of each pole piece if flat so that the pole pieces in situ provide a narrow gap with full cross-sectional area, while the other end in form of truncated cone providing narrow concentrated field between the poles. Following components are included in the apparatus. ? Laminated U-Core - 1 No. ? Laminated I-Core - 1 No. ? Soft iron Pole Pieces - 2 Nos. ? One coil of 6000 turns, maximum current 0.2A with one intermediary output corresponding to 2000 turns ? One coil of 600 turns, maximum current 0.25A. Mainly to create the transformer primary. Provided with mains power supply ? One coil of 1200 turns, maximum current 1.25A, with intermediary outputs corresponding to 400 and 800 turns ? One coil of 72 turns maximum current 12A, with intermediary outputs corresponding to 6,30,54 and 66 turns
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D1SSECTIBLE TRANSFORMER Oissectible Transformer with complete components (0354)
For demonstration of basic concepts associated with electromagnetic induction such as AC transformers, induced currents and their effects etc. Also call Demountable Transformer. Comprises a U-Core and I-Core of rectangular cross section, made from high grade laminations to minimize the induction losses, with size of the I-core suitable to sit completely over U-core to provide a continuous rectangular annular laminated block. Arms of the U-core takes various coils included for different experiments. All coils included are wound from enameled copper wire on insulated rectangular plastic bobbin and are totally covered to prevent any accidental direct contact with the winding. 4mm socket terminals provided at the front for electrical connections except for 600 turns coil that operates on AC mains and is provided with a two core flexible lead. With number of turns of coil clearly printed on front and direction of winding indicated on top. The bobbins have rectangular hole at their center matching the cross-section of U-'core arms to sit on them with negligible air gap for minimizing induction losses. Also included is a pair of soft iron pole pieces to sit on top of U-core arms. One end of each pole piece if flat so that the pole pieces in situ provide a narrow gap with full cross-sectional area, while the other end in form of truncated cone providing narrow concentrated field between the poles. Following components are included in the apparatus. ? Laminated U-Core - 1 No. ? Laminated I-Core - 1 No. ? Soft iron Pole Pieces - 2 Nos. ? One coil of 6000 turns, maximum current 0.2A with one intermediary output corresponding to 2000 turns ? One coil of 600 turns, maximum current 0.25A. Mainly to create the transformer primary. Provided with mains power supply ? One coil of 1200 turns, maximum current 1.25A, with intermediary outputs corresponding to 400 and 800 turns ? One coil of 72 turns maximum current 12A, with intermediary outputs corresponding to 6,30,54 and 66 turns
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D1SSECTIBLE TRANSFORMER Stand for Oissectible Transformer (0354)
A cast metal stand consisting of a stable, non-skid heavy base with two removable clamping arms at the top. A channel, wide enough to accommodate U-core lengthwise, extends across its complete width. Integral support for arms, present toward the rear has level below the level of pole pieces. Anns pivoted on a spindle with adjustment of knobs at the rear, bringing cushioned pads beneath the front end of arms to bear on transformer core. Provided with 4mm hole for connecting earthing lead.
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D1SSECTIBLE TRANSFORMER Coil for Transformer, 100 turns (0354)
For demonstration of basic concepts associated with electromagnetic induction such as AC transformers, induced currents and their effects etc. Also call Demountable Transformer. Comprises a U-Core and I-Core of rectangular cross section, made from high grade laminations to minimize the induction losses, with size of the I-core suitable to sit completely over U-core to provide a continuous rectangular annular laminated block. Arms of the U-core takes various coils included for different experiments. All coils included are wound from enameled copper wire on insulated rectangular plastic bobbin and are totally covered to prevent any accidental direct contact with the winding. 4mm socket terminals provided at the front for electrical connections except for 600 turns coil that operates on AC mains and is provided with a two core flexible lead. With number of turns of coil clearly printed on front and direction of winding indicated on top. The bobbins have rectangular hole at their center matching the cross-section of U-'core arms to sit on them with negligible air gap for minimizing induction losses. Also included is a pair of soft iron pole pieces to sit on top of U-core arms. One end of each pole piece if flat so that the pole pieces in situ provide a narrow gap with full cross-sectional area, while the other end in form of truncated cone providing narrow concentrated field between the poles. Following components are included in the apparatus. ? Laminated U-Core - 1 No. ? Laminated I-Core - 1 No. ? Soft iron Pole Pieces - 2 Nos. ? One coil of 6000 turns, maximum current 0.2A with one intermediary output corresponding to 2000 turns ? One coil of 600 turns, maximum current 0.25A. Mainly to create the transformer primary. Provided with mains power supply ? One coil of 1200 turns, maximum current 1.25A, with intermediary outputs corresponding to 400 and 800 turns ? One coil of 72 turns maximum current 12A, with intermediary outputs corresponding to 6,30,54 and 66 turns
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D1SSECTIBLE TRANSFORMER Coil for Transformer, 300 turns (0354)
For demonstration of basic concepts associated with electromagnetic induction such as AC transformers, induced currents and their effects etc. Also call Demountable Transformer. Comprises a U-Core and I-Core of rectangular cross section, made from high grade laminations to minimize the induction losses, with size of the I-core suitable to sit completely over U-core to provide a continuous rectangular annular laminated block. Arms of the U-core takes various coils included for different experiments. All coils included are wound from enameled copper wire on insulated rectangular plastic bobbin and are totally covered to prevent any accidental direct contact with the winding. 4mm socket terminals provided at the front for electrical connections except for 600 turns coil that operates on AC mains and is provided with a two core flexible lead. With number of turns of coil clearly printed on front and direction of winding indicated on top. The bobbins have rectangular hole at their center matching the cross-section of U-'core arms to sit on them with negligible air gap for minimizing induction losses. Also included is a pair of soft iron pole pieces to sit on top of U-core arms. One end of each pole piece if flat so that the pole pieces in situ provide a narrow gap with full cross-sectional area, while the other end in form of truncated cone providing narrow concentrated field between the poles. Following components are included in the apparatus. ? Laminated U-Core - 1 No. ? Laminated I-Core - 1 No. ? Soft iron Pole Pieces - 2 Nos. ? One coil of 6000 turns, maximum current 0.2A with one intermediary output corresponding to 2000 turns ? One coil of 600 turns, maximum current 0.25A. Mainly to create the transformer primary. Provided with mains power supply ? One coil of 1200 turns, maximum current 1.25A, with intermediary outputs corresponding to 400 and 800 turns ? One coil of 72 turns maximum current 12A, with intermediary outputs corresponding to 6,30,54 and 66 turns
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D1SSECTIBLE TRANSFORMER Coil for Transformer, 3600 turns (0354)
For demonstration of basic concepts associated with electromagnetic induction such as AC transformers, induced currents and their effects etc. Also call Demountable Transformer. Comprises a U-Core and I-Core of rectangular cross section, made from high grade laminations to minimize the induction losses, with size of the I-core suitable to sit completely over U-core to provide a continuous rectangular annular laminated block. Arms of the U-core takes various coils included for different experiments. All coils included are wound from enameled copper wire on insulated rectangular plastic bobbin and are totally covered to prevent any accidental direct contact with the winding. 4mm socket terminals provided at the front for electrical connections except for 600 turns coil that operates on AC mains and is provided with a two core flexible lead. With number of turns of coil clearly printed on front and direction of winding indicated on top. The bobbins have rectangular hole at their center matching the cross-section of U-'core arms to sit on them with negligible air gap for minimizing induction losses. Also included is a pair of soft iron pole pieces to sit on top of U-core arms. One end of each pole piece if flat so that the pole pieces in situ provide a narrow gap with full cross-sectional area, while the other end in form of truncated cone providing narrow concentrated field between the poles. Following components are included in the apparatus. ? Laminated U-Core - 1 No. ? Laminated I-Core - 1 No. ? Soft iron Pole Pieces - 2 Nos. ? One coil of 6000 turns, maximum current 0.2A with one intermediary output corresponding to 2000 turns ? One coil of 600 turns, maximum current 0.25A. Mainly to create the transformer primary. Provided with mains power supply ? One coil of 1200 turns, maximum current 1.25A, with intermediary outputs corresponding to 400 and 800 turns ? One coil of 72 turns maximum current 12A, with intermediary outputs corresponding to 6,30,54 and 66 turns
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D1SSECTIBLE TRANSFORMER Coil for Transformer, 12000 turns (0354)
For demonstration of basic concepts associated with electromagnetic induction such as AC transformers, induced currents and their effects etc. Also call Demountable Transformer. Comprises a U-Core and I-Core of rectangular cross section, made from high grade laminations to minimize the induction losses, with size of the I-core suitable to sit completely over U-core to provide a continuous rectangular annular laminated block. Arms of the U-core takes various coils included for different experiments. All coils included are wound from enameled copper wire on insulated rectangular plastic bobbin and are totally covered to prevent any accidental direct contact with the winding. 4mm socket terminals provided at the front for electrical connections except for 600 turns coil that operates on AC mains and is provided with a two core flexible lead. With number of turns of coil clearly printed on front and direction of winding indicated on top. The bobbins have rectangular hole at their center matching the cross-section of U-'core arms to sit on them with negligible air gap for minimizing induction losses. Also included is a pair of soft iron pole pieces to sit on top of U-core arms. One end of each pole piece if flat so that the pole pieces in situ provide a narrow gap with full cross-sectional area, while the other end in form of truncated cone providing narrow concentrated field between the poles. Following components are included in the apparatus. ? Laminated U-Core - 1 No. ? Laminated I-Core - 1 No. ? Soft iron Pole Pieces - 2 Nos. ? One coil of 6000 turns, maximum current 0.2A with one intermediary output corresponding to 2000 turns ? One coil of 600 turns, maximum current 0.25A. Mainly to create the transformer primary. Provided with mains power supply ? One coil of 1200 turns, maximum current 1.25A, with intermediary outputs corresponding to 400 and 800 turns ? One coil of 72 turns maximum current 12A, with intermediary outputs corresponding to 6,30,54 and 66 turns
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DEMONSTRATION TRANSFORMER (0355)
For demonstrating the basic principle of operation of the transformers. Comprises a W-shaped laminated iron core mounted on base with a vertical bolt on its each side for clamping laminated I-core or armature at its top. Also included are a set of three coils - one mains primary coil 240V AC, 50HZ, 2400 turns, and two interchangeable secondary coils, 65 and 130 turns each giving outputs of about 6 and 12V respectively at a maximum current rating of 2A, with number of turns and current/voltage rating marked on each coil. Mains coil provided with a 2 core captive mains cable for input, while each secondary coil has a pair of 4mm socket terminals for output. Coils wound on insulated plastic bobbin having hollow rectangular cross-section to exactly fit middle arm of the core with negligible flux leakage
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COILS FOR DISSECTIBLE TRANSFORMER, TRANSPARENT CASING (0356)
Coils for use with the Dissectible Transformer. These coils are of similar specifications as the ones supplied in Cat No. 1090160. All coils wound from enameled copper wire on insulated rectangular plastic bobbin enclosed on three sides by a transparent cover. Front of the bobbin is totally covered by a moulded plastic box on which 4mm shielded safety sockets are present for connecting coil in the circuit. With number of turns of coil clearly printed on front and direction of winding indicated on top. Rectangular bobbins have hole at their center matching the cross-section of U-core arms to sit on them with negligible air gap for minimizing induction losses.
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COILS FOR DISSECTIBLE TRANSFORMER, TRANSPARENT CASING Coil of 6000 turns, with one intermediary output corresponding to 2000 turns (0356)
Coils for use with the Dissectible Transformer. These coils are of similar specifications as the ones supplied in Cat No. 1090160. All coils wound from enameled copper wire on insulated rectangular plastic bobbin enclosed on three sides by a transparent cover. Front of the bobbin is totally covered by a moulded plastic box on which 4mm shielded safety sockets are present for connecting coil in the circuit. With number of turns of coil clearly printed on front and direction of winding indicated on top. Rectangular bobbins have hole at their center matching the cross-section of U-core arms to sit on them with negligible air gap for minimizing induction losses.
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COILS FOR DISSECTIBLE TRANSFORMER, TRANSPARENT CASING Coil of 600 turns. Mainly to create the transfonner primary. Provided with mains power cable (0356)
Coils for use with the Dissectible Transformer. These coils are of similar specifications as the ones supplied in Cat No. 1090160. All coils wound from enameled copper wire on insulated rectangular plastic bobbin enclosed on three sides by a transparent cover. Front of the bobbin is totally covered by a moulded plastic box on which 4mm shielded safety sockets are present for connecting coil in the circuit. With number of turns of coil clearly printed on front and direction of winding indicated on top. Rectangular bobbins have hole at their center matching the cross-section of U-core arms to sit on them with negligible air gap for minimizing induction losses.
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COILS FOR DISSECTIBLE TRANSFORMER, TRANSPARENT CASING Coil of 1200 turns, with intermediary outputs corresponding to 400 and 800 turns (0356)
Coils for use with the Dissectible Transformer. These coils are of similar specifications as the ones supplied in Cat No. 1090160. All coils wound from enameled copper wire on insulated rectangular plastic bobbin enclosed on three sides by a transparent cover. Front of the bobbin is totally covered by a moulded plastic box on which 4mm shielded safety sockets are present for connecting coil in the circuit. With number of turns of coil clearly printed on front and direction of winding indicated on top. Rectangular bobbins have hole at their center matching the cross-section of U-core arms to sit on them with negligible air gap for minimizing induction losses.
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