JPS628663U - - Google Patents
Info
- Publication number
- JPS628663U JPS628663U JP9849685U JP9849685U JPS628663U JP S628663 U JPS628663 U JP S628663U JP 9849685 U JP9849685 U JP 9849685U JP 9849685 U JP9849685 U JP 9849685U JP S628663 U JPS628663 U JP S628663U
- Authority
- JP
- Japan
- Prior art keywords
- laser diode
- input
- output
- voltage
- amplifier
- 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
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Description
第１図は本考案に係るレーザダイオードパルス
駆動回路の一実施例を示すブロツク構成図、第２
図は第１図に示したブロツク構成の具体例を示す
回路図である。
１…サンプリング兼緩衝増幅回路、２…レベル
ホールド回路、３…差動増幅回路又は誤差増幅回
路、４…比較入力電圧、５…電流、電圧安定化回
路、６…電源電圧、７…レーザダイオード順電流
供給トランジスタ、８…ＴＴＬバツフア、９…レ
ーザダイオード、１０…モニタ用ＰＩＮホトダイ
オード、１１…ＴＴＬ入力信号（パルス信号）、
１２…光出力制御用信号（直流電圧）。
FIG. 1 is a block diagram showing one embodiment of the laser diode pulse drive circuit according to the present invention, and FIG.
FIG. 1 is a circuit diagram showing a specific example of the block configuration shown in FIG. 1...Sampling and buffer amplifier circuit, 2...Level hold circuit, 3...Differential amplifier circuit or error amplifier circuit, 4...Comparison input voltage, 5...Current, voltage stabilization circuit, 6...Power supply voltage, 7...Laser diode order Current supply transistor, 8... TTL buffer, 9... Laser diode, 10... PIN photodiode for monitor, 11... TTL input signal (pulse signal),
12... Optical output control signal (DC voltage).
Claims (1)
を通してその信号をサンプリング兼緩衝増幅器へ
入力し、この増幅器の出力を直流電圧に変換する
ためにレベルホールド回路へ入力し、このレベル
ホールド回路の出力を外部からの比較入力（直流
電圧）と共に差動増幅器へ入力させ、この差動増
幅器の出力を電流、電圧共安定化させてレーザダ
イオードへ順方向電流を供給すべく設定されたト
ランジスタの入力として供給し、同時に上記レー
ザダイオードの陽極へ上記トランジスタと並列に
ＴＴＬバツフア又は順方向電流のシヤント用トラ
ンジスタを挿入することにより上記レーザダイオ
ードの光出力を“ＯＮ”、“ＯＦＦ”させ、かつ
温度補償を行ないながら上記レーザダイオードを
常時安定に動作させることを特徴とするレーザダ
イオードパルス駆動回路。 A part of the optical output of the laser diode is passed through a photoelectric converter, and the signal is input to a sampling/buffer amplifier.The output of this amplifier is input to a level hold circuit to convert it into a DC voltage, and the output of this level hold circuit is input to a sampling/buffer amplifier. It is input to a differential amplifier along with an external comparison input (DC voltage), and the output of this differential amplifier is co-stabilized with current and voltage and supplied as the input of a transistor set to supply forward current to the laser diode. At the same time, by inserting a TTL buffer or forward current shunting transistor into the anode of the laser diode in parallel with the transistor, the optical output of the laser diode is turned on and off, and temperature compensation is performed. A laser diode pulse drive circuit characterized in that the above laser diode is operated stably at all times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9849685U JPS628663U (en) | 1985-06-27 | 1985-06-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9849685U JPS628663U (en) | 1985-06-27 | 1985-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS628663U true JPS628663U (en) | 1987-01-19 |
Family
ID=30966481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9849685U Pending JPS628663U (en) | 1985-06-27 | 1985-06-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS628663U (en) |
-
1985
- 1985-06-27 JP JP9849685U patent/JPS628663U/ja active Pending
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