| 摘要 |
<p>A silicon controller rectifier based analog circuit (10) that can be utilized in connection with known analog based residential arc detecting circuit breakers to reduce false tripping of the breakers is described. By eliminating the first current pulse in the time attenuated pulse counting circuit (10) as well as fast, subsequent cycle pulses, the possible tripping due to the one or two pulse lamp burnout false trips is substantially eliminated. The circuit (10) eliminates a first arc pulse in all conditions and a second arc pulse if it quickly follows the first pulse, thus reducing the breaker sensitivity as little as possible while significantly reducing, if not eliminating, false tripping when two consecutive high current arc pulses are generated. <IMAGE></p> |
