PRINTED CIRCUIT BOARD WITH INTEGRATED TEMPERATURE SENSING
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United States of America Patent
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app pub date -
Aug 8, 2013
filing date -
Aug 8, 2012
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Abstract
An extruder for a three-dimension printer uses a printed circuit board (PCB) heating element with leads having temperature-sensitive resistance. The resulting circuit can be driven at high power to heat an extruder, or at a low power with a known current to measure a resistance from which temperature can be inferred. Thus a single circuit on a printed circuit board can be driven alternately in two modes to heat and sense temperature of an extruder.
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