| 摘要 |
The circuit card (1) has a carbonization sensor (3) for protecting against electrical smoldering fires, whereby the sensor contains first and second conducting tracks (4,5) and a monitoring arrangement (8) on the circuit card. Both conducting tracks are electrically insulated from each other by the plastic and the monitoring arrangement monitors the state of insulation of both conducting tracks relative to each other and produces an error signal (10). |
