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Working Model - Bimetal Fan 107920

Article #107920

Description

Simple construction - can be made in a normal classroom with everyday tools! Uses bimetal as a switch to close an electric circuit. When the circuit is closed the fan cools down the bi-metal and the circuit will open. A candle re-warms the bi-metal and the process starts again. Tealight included. Simple construction with combination pliers, side cutters and crosshead screwdriver! Slow working electric motor in a simple magnetic field.  Complete illustrated instructions.Skills required: marking, bending, glueing and assembling.  Size: approx. 120 x 120 x 90 mm

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£ 3.29

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