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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 [53] 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 [«Back ||Next »]   Click to Enlarge MOTOR CONSTRUCTION KIT, WESTMINSTER TYPE (0381) Contains components to construct six motors, Kit has components similar to 'Westminster' electromagnetic kit and comprises of Anisotropic Ceramic Ferrite Magnets 12 Nos, Armatures 6 Nos., Mild Steel Yokes 12 Nos, Support Bases 6 Nos, Shafts 6 Nos, Rivets 24 Nos, Split Pins 12 Nos, PVC tinned Copper Wire 1 Reel, Cello tape Roles 2 Nos, Insulated Tubing, 2.5mm Bore 30cm See Enlarge Click to Enlarge INDUCTION COIL (RUHMKORFF) (0382) Useful for the demonstration of characteristics associated with high voltage phenomena such as with Geissler tubes, spectrum analysis tubes etc. This traditional induction coil is capable of producing a spark length of up to 30mm with an input of 6 to BV DC and is therefore ideal for use with vacuum tubes, eudiometers, etc. A fully adjustable trembler system is incorporated and spark suppression capacitors are housed in the base. Ruhmkorff commutator allows primary current to be both reversed and switched ON / OFF with make-and-break point. A pair of pointed electrodes is supplied with the instrument, the pointed electrodes having an insulating handle for adjustment of the spark gap. Low voltage input is via a pair of baseboard mounted colour coded 4mm sockets. See Enlarge Click to Enlarge INDUCTION COIL (0383) Box form, coils are wound from insulated copper wire and paraffin wax insulation is provided throughout with condenser in polished case, adjustable trembler break with special alloy contacts, with switch allowing primary current to be reversed and removable discharge points. Complete with ON/OFF switch for primary and two terminals lock type for input. Available in spark lengths of 10, 15, 20, 25, 37, 50, 75, 100. See Enlarge Click to Enlarge OHM'S LAW APPARATUS (0384) For demonstration of Ohm's law, according to which V / I = R. When connected to an external battery through a pair of color coded terminals with a suitable resistance connected across another pair of terminals, the voltmeter and milliammeter readings are available at the press of the key. Current flowing through the circuit can be controlled through a rheostat knob. With milliammeter 0500mA DC, voltmeter 0-10V DC, rheostat knob, push key, and 4mm socket terminals mounted on top of sheet metal enclosure having scratch resistant epoxy paint coating. Circuit diagram indicating all components printed on top of the enclosure. External battery and resistances not supplied, available optionally See Enlarge Click to Enlarge RESISTANCE BOX, PLUG TYPE (0385) For accurate work. In well polished wooden box with bakelite panel figured in white. Split brass contact blocks hold precision cut, interchangeable brass plugs having moulded black bakelite fluted tops. Coils of constantan wire, non-inductively wound, double silk covered; with resistances precisely adjusted and are mounted underneath the panel with double nut arrangement. Accuracy ?O.1%. See Enlarge Click to Enlarge RESISTANCE BOX, PLUG TYPE Range 1-50, Total 110, No. of Coils 8 (0385) For accurate work. In well polished wooden box with bakelite panel figured in white. Split brass contact blocks hold precision cut, interchangeable brass plugs having moulded black bakelite fluted tops. Coils of constantan wire, non-inductively wound, double silk covered; with resistances precisely adjusted and are mounted underneath the panel with double nut arrangement. Accuracy ?O.1%. See Enlarge Click to Enlarge RESISTANCE BOX, PLUG TYPE Range 1-100, Total 210, No. of Coils 9 (0385) For accurate work. In well polished wooden box with bakelite panel figured in white. Split brass contact blocks hold precision cut, interchangeable brass plugs having moulded black bakelite fluted tops. Coils of constantan wire, non-inductively wound, double silk covered; with resistances precisely adjusted and are mounted underneath the panel with double nut arrangement. Accuracy ?O.1%. See Enlarge Click to Enlarge RESISTANCE BOX, PLUG TYPE Range 1-500, Total 1110, No. of Coils 12 (0385) For accurate work. In well polished wooden box with bakelite panel figured in white. Split brass contact blocks hold precision cut, interchangeable brass plugs having moulded black bakelite fluted tops. Coils of constantan wire, non-inductively wound, double silk covered; with resistances precisely adjusted and are mounted underneath the panel with double nut arrangement. Accuracy ?O.1%. See Enlarge Click to Enlarge RESISTANCE BOX, PLUG TYPE Range 1-1000, Total 1110, No. of Coils 13 (0385) For accurate work. In well polished wooden box with bakelite panel figured in white. Split brass contact blocks hold precision cut, interchangeable brass plugs having moulded black bakelite fluted tops. Coils of constantan wire, non-inductively wound, double silk covered; with resistances precisely adjusted and are mounted underneath the panel with double nut arrangement. Accuracy ?O.1%. See Enlarge Click to Enlarge RESISTANCE BOX, PLUG TYPE Range 1-5000, Total 11110, No. of Coils 16 (0385) For accurate work. In well polished wooden box with bakelite panel figured in white. Split brass contact blocks hold precision cut, interchangeable brass plugs having moulded black bakelite fluted tops. Coils of constantan wire, non-inductively wound, double silk covered; with resistances precisely adjusted and are mounted underneath the panel with double nut arrangement. Accuracy ?O.1%. See Enlarge Click to Enlarge RESISTANCE BOX, PLUG TYPE Range 1-10000, Total 21110, No. of Coils 17 (0385) For accurate work. In well polished wooden box with bakelite panel figured in white. Split brass contact blocks hold precision cut, interchangeable brass plugs having moulded black bakelite fluted tops. Coils of constantan wire, non-inductively wound, double silk covered; with resistances precisely adjusted and are mounted underneath the panel with double nut arrangement. Accuracy ?O.1%. See Enlarge Click to Enlarge RESISTANCE BOX, PLUG TYPE (0386) Same specifications as per RESISTANCE BOX, PLUG TYPE but with non-inductively wound coils of manganin wire, double silk covered with resistances adjusted to high precision. Accuracy ? 0.05%. See Enlarge Click to Enlarge RESISTANCE BOX, PLUG TYPE Range 1-50, Total 110, No. of Coils 8 (0386) Same specifications as per RESISTANCE BOX, PLUG TYPE but with non-inductively wound coils of manganin wire, double silk covered with resistances adjusted to high precision. Accuracy ? 0.05%. See Enlarge Click to Enlarge RESISTANCE BOX, PLUG TYPE Range 1-100, Total 210, No. of Coils 9 (0386) Same specifications as per RESISTANCE BOX, PLUG TYPE but with non-inductively wound coils of manganin wire, double silk covered with resistances adjusted to high precision. Accuracy ? 0.05%. See Enlarge Click to Enlarge RESISTANCE BOX, PLUG TYPE Range 1-500, Total 1110, No. of Coils 12 (0386) Same specifications as per RESISTANCE BOX, PLUG TYPE but with non-inductively wound coils of manganin wire, double silk covered with resistances adjusted to high precision. Accuracy ? 0.05%. See Enlarge 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 [53] 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 [«Back ||Next »] Go to Top