The present temperature monitor is comprised of a thermistor and a reference resistor connected to a capacitor in parallel. The capacitor is charged through the thermistor by a microcontroller to determine the thermistor charging time, discharged, and then charged through the reference resistor to determine...http://www.google.fr/patents/US6320512?utm_source=gb-gplus-shareBrevet US6320512 - Temperature monitor for temperature sensitive products
Temperature monitor for temperature sensitive products