Huby, Ronald James,Tang, Zhuo Ran,Vos, Adrian Ashley
申请号：
NZ72782014
公开号：
NZ727820A
申请日:
2014.01.30
申请国别(地区):
NZ
年份:
2018
代理人:
摘要：
Disclosed is a control system for a heated conduit for use in a respiratory apparatus. The control system comprises a power supply (440) to provide power to the heated conduit, a heating control circuit, and a sensing circuit (428) includes a sensing resistor (426). The heating control circuit is configured to control heating of the heated conduit to obtain a predetermined temperature. The sensing resistor (426) is configured to provide an output to indicate the temperature of a sensor positioned in the heated conduit. A direction of the voltage drop across the sensing resistor (426) changes when the heating is on compared to when the heating is off.
