Breckland Scientific 2023 Catalogue

Electricity

Electromechanical

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1 LOUDSPEAKER MINIATURE For use in portable equipment etc. this 50mm diameter, 8 Ohm, 0.5 watt speaker has a paper cone, ferrite magnet and comes with solder connection tags. Cat No. Description Price Per ECO-080-100 Minature Loudspeaker 1.30 ea.

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2 REED SWITCH General purpose SPST magnetic reed switch. Cat No. Description

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Minature Loudspeaker

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ECO-250-100 Reed Switch Pack

6.20 5pk

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3 LASCELLS ELECTRO MECHANICAL SYSTEM A fool-proof system for allowing students to investigate the raising of a mechanical load by an electrical input. A small d.c. electric motor is geared down to rotate a shaft around which a thread is wound. The thread is attached to a load and the students time the lifting process while noting the electrical input to the system. It enables investigations to be carried out into efficiency, energy transfer, power etc. Useful at all levels from KS3 to Post 16. A limit switch automatically stops the motor when the load reaches the top. Supplied complete with detailed instructions for many investigations at different levels. Cat No. Description Price Per HEC-225-100 Electro Mechanical System 83.78 ea.

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Reed Switch

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Electro Mechanical System

Principles of Electricity

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4 ENERGY BALL Demonstrate electrical continuity using the ‘Energy ball’ (also known as a Cosmic Ball). Simply touch the ball’s metal strips to complete a circuit and the ball lights up and buzzes. This simple product safely demonstrates electrical conductivity through different materials, and even demonstrates electrical conductivity through the human body by touching the two contacts. For a group activity, get students to form a circle by joining hands, using an Energy Ball to complete the circuit to make the ball light up and buzz. Cat No. Description Price Per ELR-300-100 Energy Ball 7.21 ea. 5 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 sockets. Cat No. Description Price Per ELM-150-200 Earth Neutral & Live Demo 94.42 ea.

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Energy Ball

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Earth Neutral & Live Demo

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