Application Notes

3
© 2017 / Bare Conductive Ltd.
First Floor, 98 Commercial St
London E1 6LZ, United Kingdom
[phone]
[e-mail]
39Ω 20mm x 15mm 61Ω 50mm x 20mm 32Ω 30mm x 30mm
473Ω 70mm x 3mm
737Ω 110mm x 3mm
869Ω 130mm x 3mm
526Ω 130mm x 5mm
3000
2000
1000
50
2500Ω
32Ω
10mm x 10mm Shape 1250mm x 10mm Shape
RESISTANCE Ω
RATIO (L/W)
1 50 100 150
RESISTANCE GRAPH
Electric Paint presents a wholly unique way of exploring electrical resistance. In general, the resistance
of a sample of conductive material is dened by the dimensions of the sample being tested,
and resistance is inversely proportional to cross sectional area (i.e. given a set length and depth,
a wider sample will have less resistance than a thin one). Thus, the resistance can be dened by the ratio
of length/width.
The diagram below plots the proportional ratio of a sample of Electric Paint against its approximate
resistance. This diagram assumes that Electric Paint has been applied with a brush. You can calculate
an estimated resistance for any proportion over 1, based on the equation: Resistance=19.77(Ratio)+12
Example one is illustrated by a blue point on the diagram. This point is associated with a shape with a
ratio of 1 (dimensions of 10mm x 10mm i.e. 10 x 10 =1). The resistance associated with this ratio is 32Ω.
The nature of the ratio number means that this shape could have the dimensions of 100mm x 100mm and
the resistance would still be 32Ω.
Example two shows a shape of ratio 125. In this example the shape has the dimensions of
1250mm x 10mm (1250/10=125). The resistance associated with this shape is 2500Ω.
RESISTANCE SAMPLES VISUAL