Low Voltage Source, Heat Voltage

A 12V 100W heating coil, wound over a rectangular former, is suspended between two pillars with integral 4mm sockets. A pair of aluminium sheet lined heat resistance screens, 75 x 63mm, each with 28mm aperture completes the apparatus, which is mounted on a rod measuring

150 x 8mm diameter.

NB: Power supply must be able to supply 8A due to 100W rating.