Breckland Scientific 2021 Catalogue

Electromagnetism

Electromagnetism

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1 ELECTROMAGNET U-Form electromagnet. Size 140mm x 100mm Cat No. Description

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Price Per

ELM-155-100 Electomagnet

14.43 ea.

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2 AC MAGNETIC FIELD COIL A coil, mounted vertically on a base, with 10 turns of insulated copper wire and a diameter of 15 cm. Electrical connection to the coil is via 4 mm sockets, which are mounted on the base. When AC is passed through the coil, an alternating magnetic field is induced, which can be detected using a search coil. Requires an AC power supply which can deliver up to 5 Amps at low voltage (e.g. a Westminster power supply). The current should not exceed 5A. Cat No. Description Price Per ELM-120-100 AC Magnetic Field Coil 49.18 ea. 3 LASCELLS EARTH NEUTRAL LIVE DEMO This apparatus is an effective demonstration of how the earth wire and fuse act together to protect both the user and the appliance. The apparatus can be set up to demonstrate and explain: The safe wiring of an appliance; the danger of an unearthed appliance; the action of a fuse. In use the appliance is connected correctly and the LEDs in the kettle will illuminate to show the appliance is working. A fault is then demonstrated by swapping the live wire from inside the kettle to the case. This will demonstrate either the fuse melting and protecting both the user and appliance, or in the case of no earth wire, the LEDs illuminate to indicate the passage of current through the person to ground. The apparatus is clearly labelled and allows the tracing of current from the ‘power station’ through the 13A socket, plug and appliance through the live wire and back through the neutral wire. In addition, the layout of the 3 pin plug is positionally correct to reinforce the wiring layout and the position of the fuse. The fuse is easily visible and can be seen to ‘blow’ when a fault occurs. The unit is supplied with 10 metres of fuse wire and full instructions. A 12V D.C. power supply is required. Connections are made via 4mm shrouded

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Electromagnet

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AC Magnetic Field Coil

sockets. Cat No.

Description

Price Per

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ELM-150-200

Earth Neutral & Live Demo

88.37 ea.

4 DEMO SOLENOID OHP FIELD PATTERN MODEL The model is mounted on clear, transparent acrylic permitting use on an OHP for classroom demonstration. The integrated 4mm socket terminals allow for electrical supply allowing the magnetic effects in each to be visualized through the use of iron filings or plotting compasses. The solenoid coil about 52 x 125mm (Dia. x L) of 16 SWG enamelled copper wire. Each turn is sufficiently apart and well insulated from the adjacent ones. Cat No. Description Price Per ELM-100-100 Solenoid OHP Field Pattern Model 11.80 ea.

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Earth Neutral Live Demo

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Related Products... For magnets see pages 270 - 271 For magnetic field products see pages 272 - 273

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Demo OHP Field Pattern Model

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