摘要 |
<p>A self-regulating heater comprising a pair of flexible elongate parallel conductors (40) which are connectable to a power supply, and a plurality of rigid heating modules connected in parallel with each other between the conductors. Preferably, each of the heating modules comprises a PTC resistive heating component which has been deposited on the substrate (32) and which generates heat when the conductors are connected to a suitable power supply. </p> |