JPS6265856U - - Google Patents
Info
- Publication number
- JPS6265856U JPS6265856U JP1985159132U JP15913285U JPS6265856U JP S6265856 U JPS6265856 U JP S6265856U JP 1985159132 U JP1985159132 U JP 1985159132U JP 15913285 U JP15913285 U JP 15913285U JP S6265856 U JPS6265856 U JP S6265856U
- Authority
- JP
- Japan
- Prior art keywords
- pulse generator
- optical pulse
- alarm
- led
- outputting
- 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
- 230000006866 deterioration Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Feedback Control In General (AREA)
Description
第１図は本考案の具体的実施例、第２図は従来
例、第３図と第４図は寿命劣化を説明する図であ
る。
１：ＬＥＤ、２：ホトダイオード、３：比較増
幅器、４：比較増幅器、５：アナログスイツチ。
FIG. 1 is a concrete example of the present invention, FIG. 2 is a conventional example, and FIGS. 3 and 4 are diagrams for explaining life deterioration. 1: LED, 2: Photodiode, 3: Comparison amplifier, 4: Comparison amplifier, 5: Analog switch.
Claims (1)
ータにおいて、ＬＥＤの寿命劣化を検知しその警
報を出力する手段と、その警報出力にもとづいて
ＬＥＤ駆動電流一定制御に自動的に切り替える手
段を備えることを特徴とする光学式パルスジエネ
レータ。 An optical pulse generator that performs constant light intensity control, characterized by comprising means for detecting life deterioration of the LED and outputting an alarm, and means for automatically switching to constant LED drive current control based on the alarm output. Optical pulse generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985159132U JPS6265856U (en) | 1985-10-16 | 1985-10-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985159132U JPS6265856U (en) | 1985-10-16 | 1985-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6265856U true JPS6265856U (en) | 1987-04-23 |
Family
ID=31083277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985159132U Pending JPS6265856U (en) | 1985-10-16 | 1985-10-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6265856U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58168287A (en) * | 1982-03-30 | 1983-10-04 | Fujitsu Ltd | Alarm system in electro-optical converter circuit |
-
1985
- 1985-10-16 JP JP1985159132U patent/JPS6265856U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58168287A (en) * | 1982-03-30 | 1983-10-04 | Fujitsu Ltd | Alarm system in electro-optical converter circuit |