Technology Behind EXO²
Engineered exclusively via EXO²'s unique self regulating heating
elements, all EXO² products exhibit a positive temperature coefficient (PTC) which means that these products cannot burn the user and thus provide a safe and simple heating
solution.
Positive Temperature Coefficient (PTC)
PTC is a characteristic many materials exhibit whereby resistance increases with temperature in a non-linear
fashion. Once the material reaches the desired temperature it self regulates.
When the heating element is at room ambient temperature, numerous conductive "chains" exist within the
material. When low voltage is applied, excessive current flows through the
device, causing a rise in heat. Once the heat rises, it creates a small
expansion, causing the conductive particles to move apart from each other. Since most of these particles no longer conduct
current, the resistance of the device increases. Whilst the power is
maintained, the material will stay "hot" and the resistance remain high. In this state, the element will continue to generate heat until the power is
removed. Energy efficiency is optimised by a power to heat conversion ratio of up to 98%.
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