Breckland Scientific 2023 Catalogue

Electrostatics

Electrostatics

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1 WIMSHURST MACHINE The ideal equipment for simple demonstration of electrostatics. No electrical power is required. The unit will quickly generate a charge with regular discharge. Under correct conditions the spark will travel up to 120mm in air between electrodes. The two plates are supported in two rigid uprights and driven by a belt in the opposite direction. The plates are heavy high resistance plastic with sectors of aluminium sheet. Two leyden jars (capacitors) are made from corning glass and aluminium foil. The apparatus is mounted on a base for easy use and transportation. Diameter of plates: 310mm Cat No. Description Price Per ECT-240-100 Wimshurst Machine 168.74 ea. 2 LASCELLS E-FIELD DETECTOR The Lascells E-Field Detector provides a new and novel way to demonstrate charge. This highly sensitive electronic device can detect very small charges and their polarity, as well as charge at a distance. This robust apparatus allows teachers to clearly show whether a positive or negative charge has been created and in which directions the electrons have moved. An LED array indicates positive or negative charge, as well as the size of the charge and external voltmeter sockets allow for quantitative measurements.

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Features • On-Off switch • Hi-Lo Sensitivity range

Wimshurst Machine

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• Clear, easy to read display • Narrow field of detection • Rubber feet to insulate case

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The apparatus is quick and easy to setup and comes complete with comprehensive instructions, which include use with both traditional experiments and new exciting ways to look at charge. Apparatus includes: Full instructions; 24V AC-DC Adapter; Earth bonding lead; BNC E-Field detector nose.

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Specifications Dimensions: Input Voltage: Current Draw: Display Range: Weight:

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145 x 100 x 50 mm (l x w x h)

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24V DC 50mA

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Hi sensitivity 6 – 125pC; Lo sensitivity 0.6 – 12.5nC

Display Resolution: Hi sensitivity min. resolution 6pC; Lo sensitivity min resolution 0.6nC Socket Output Range: 0 – 4.7V equivalent to Hi sensitivity 0 – 470pC; Lo sensitivity: 0 – 47nC Cat No. Description Price Per ECT-550-100 Lascells E-Field Detector 93.91 ea. 3 ELECTRIC FIELD APPARATUS The apparatus enables electric field patterns to be shown in much the same way that magnetic fields are demonstrated with iron fillings, either by direct viewing or on an overhead projector. The apparatus comprises a clear plastic dish 90 x 12mm diameter x depth, and base 140 x 125mm. Alongside each terminal is a thumbscrew system which permits fine height adjustment of the electrodes. Six electrodes are supplied, two ‘point source’ two ‘line source’ and two circular rings of 35 and 70mm dia. For use with 0-5kV EHT power supply. Cat No. Description Price Per ECT-255-150 Electric Field Apparatus 29.25 ea.

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Lascells E-Field Detector

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Electric Field Apparatus

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