JPS61142463U - - Google Patents
Info
- Publication number
- JPS61142463U JPS61142463U JP1985025855U JP2585585U JPS61142463U JP S61142463 U JPS61142463 U JP S61142463U JP 1985025855 U JP1985025855 U JP 1985025855U JP 2585585 U JP2585585 U JP 2585585U JP S61142463 U JPS61142463 U JP S61142463U
- Authority
- JP
- Japan
- Prior art keywords
- switching element
- light emitting
- turned
- power supply
- emitting element
- 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 4
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案に係る発光素子駆動回路の一実
施例の構成を示す回路図、第２図は従来の発光素
子駆動回路の構成を示す回路図である。
Ｑ１，Ｑ２…スイツチングトランジスタ、Ｄ１
…発光素子、Ｃ１，Ｃ２…コンデンサ、Ｒ１〜Ｒ
５…抵抗、１０…端子、１００〜電源ライン。
FIG. 1 is a circuit diagram showing the structure of an embodiment of a light emitting element driving circuit according to the present invention, and FIG. 2 is a circuit diagram showing the structure of a conventional light emitting element driving circuit. Q1, Q2...Switching transistor, D1
...Light emitting element, C1, C2...Capacitor, R1~R
5...Resistance, 10...Terminal, 100~Power line.
Claims (1)
せる際に出力される駆動信号を受けてオン状態と
なる第１のスイツチング素子と、 第１のスイツチング素子のオン動作時に応動し
てオン状態となる第２のスイツチング素子と、 該第２のスイツチング素子、前記発光素子及び
充電回路を構成する抵抗素子が直列接続され且つ
電源―アース間に接続される直列回路と、 該直列回路における発光素子と抵抗素子との接
続点と第１のスイツチング素子の電源側との間に
接続される前記充電回路を構成するコンデンサと
を有し、前記第１のスイツチング素子がオフ状態
にある時に前記コンデンサは略、電源電圧に充電
され、第１のスイツチング素子がオン動作時に前
記発光素子の両端間に電源から供給される電源電
圧に前記コンデンサの充電電圧が重畳されて印加
されるように構成されたことを特徴とする発光素
子駆動回路。[Claims for Utility Model Registration] A first switching element that is turned on in response to a drive signal that is output when a light emitting element connected between a power source and the ground emits light, and an on-state operation of the first switching element. a second switching element that is turned on in response to a switching element; a series circuit in which the second switching element, the light emitting element, and a resistance element constituting a charging circuit are connected in series and connected between a power source and a ground; a capacitor constituting the charging circuit connected between a connection point between the light emitting element and the resistive element in the series circuit and a power supply side of the first switching element, the first switching element being in an off state; When the first switching element is turned on, the capacitor is charged to approximately the power supply voltage, and the charging voltage of the capacitor is applied superimposed on the power supply voltage supplied from the power supply across the light emitting element when the first switching element is turned on. A light emitting element drive circuit characterized in that it is configured as follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985025855U JPS61142463U (en) | 1985-02-25 | 1985-02-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985025855U JPS61142463U (en) | 1985-02-25 | 1985-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61142463U true JPS61142463U (en) | 1986-09-03 |
Family
ID=30521317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985025855U Pending JPS61142463U (en) | 1985-02-25 | 1985-02-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61142463U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS594656B2 (en) * | 1978-03-17 | 1984-01-31 | 富士電機株式会社 | Appearance inspection equipment for solid preparations |
-
1985
- 1985-02-25 JP JP1985025855U patent/JPS61142463U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS594656B2 (en) * | 1978-03-17 | 1984-01-31 | 富士電機株式会社 | Appearance inspection equipment for solid preparations |
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