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US4432722A Interrupted power hot wire gas ignition control system 失效
中断电源热丝气体点火控制系统

Interrupted power hot wire gas ignition control system
摘要:
A hot wire type of gas ignition system uses a negative temperature coefficient resistor-ignitor element that is deenergized after ignition has occurred. The ignition and safety monitoring of the circuit is accomplished by a second flame detector means, and the flame responsive circuit that has been disclosed in a flame rectification circuit.
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