Smoke detector of photoelectric type
专利汇可以提供Smoke detector of photoelectric type专利检索，专利查询，专利分析的服务。并且PURPOSE:To prevent the misinformation due to continuous noise, by resetting flip- flop with the output of photodetector produced during the pulse generating period for noise check. CONSTITUTION:A light emitting element 12 is periodically driven by lighting with light emitting pulse of a light emitting pulse generating circuit 10, and scattered light by smoke particles of light emitted from this light emitting element 12 is received with a photodetector 13, and the output of the photodetector 13 is amplified at an amplifier 14. The output of the amplifier 14 passes through an AND gate 15 only during the production period of light emitting pulse and passes through an AND gate 16 only during the production period of noise check pulse. The output exceeding a given level among the outputs passing through an AND gate 15 sets a flip- flop 17. Further, the output exceeding a given level among the outputs passing through the AND gate 16 and the light emitting pulse resets the flip-flop 17. The output of the flip-flop 17 actuates an alarm 20 via an integration circuit 19.，下面是Smoke detector of photoelectric type专利的具体信息内容。
| 标题 | 发布/更新时间 | 阅读量 |
|---|---|---|
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| Sensitized erbium fiber optical amplifier | 2023-04-02 | 2 |
| 固定放大訊號輸出功率之色散補償架構 | 2022-03-22 | 1 |
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