JPS6446894U - - Google Patents
Info
- Publication number
- JPS6446894U JPS6446894U JP14043887U JP14043887U JPS6446894U JP S6446894 U JPS6446894 U JP S6446894U JP 14043887 U JP14043887 U JP 14043887U JP 14043887 U JP14043887 U JP 14043887U JP S6446894 U JPS6446894 U JP S6446894U
- Authority
- JP
- Japan
- Prior art keywords
- light
- line
- emitting element
- circuit
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 claims 2
- 239000000779 smoke Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Description
第１図は本考案は実施例に用いる駆動回路の具
体回路図、第２図は従来例の回路ブロツク図であ
る。
６……駆動回路、７……ＰＵＴ、Ｃ２……コン
デンサ、ＬＥＤ２……監視状態表示用発光ダイオ
ードである。Ｒ３〜Ｒ５……抵抗である。
FIG. 1 is a specific circuit diagram of a drive circuit used in an embodiment of the present invention, and FIG. 2 is a circuit block diagram of a conventional example. 6...Drive circuit, 7...PUT, C2 ...Capacitor, LED 2 ...Light emitting diode for displaying monitoring status. R 3 to R 5 are resistances.
Claims (1)
る発振回路の発振出力により発光素子を駆動し、
この発光素子の光を受光してその受光レベルに応
じた出力を発生する受光素子の出力信号に基づい
て回線を短絡させて発報を行う煙感知器において
、回線に印加される直流電圧を抵抗を通じて充電
されるコンデンサの両端にＰＵＴのアノード・カ
ソードと監視状態表示用発光素子の直列回路を接
続し、ＰＵＴのゲートに回線の直流電圧を分圧回
路で分圧して印加する駆動回路を備えて成ること
を特徴とする煙感知器。 The light emitting element is driven by the oscillation output of an oscillation circuit that operates using the DC voltage applied to the line as a power source.
In smoke detectors that issue an alarm by short-circuiting a line based on the output signal of a light-receiving element that receives light from the light-emitting element and generates an output according to the level of the received light, the DC voltage applied to the line is controlled by a resistor. A series circuit of the anode/cathode of the PUT and a light emitting element for monitoring status display is connected to both ends of the capacitor that is charged through the capacitor, and a drive circuit is provided to divide the DC voltage of the line using a voltage divider circuit and apply it to the gate of the PUT. A smoke detector characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14043887U JPS6446894U (en) | 1987-09-14 | 1987-09-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14043887U JPS6446894U (en) | 1987-09-14 | 1987-09-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6446894U true JPS6446894U (en) | 1989-03-23 |
Family
ID=31404607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14043887U Pending JPS6446894U (en) | 1987-09-14 | 1987-09-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6446894U (en) |
-
1987
- 1987-09-14 JP JP14043887U patent/JPS6446894U/ja active Pending
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