JPS61142462U - - Google Patents
Info
- Publication number
- JPS61142462U JPS61142462U JP1985024730U JP2473085U JPS61142462U JP S61142462 U JPS61142462 U JP S61142462U JP 1985024730 U JP1985024730 U JP 1985024730U JP 2473085 U JP2473085 U JP 2473085U JP S61142462 U JPS61142462 U JP S61142462U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- light emitting
- emitting diode
- connection point
- common connection
- 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
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案に係る発光ダイオード駆動回路
を示す回路図で、第２図は従来の発光ダイオード
駆動回路を示す回路図である。
Ｄ１，Ｄ２：発光ダイオード、Ｔｒ１，Ｔｒ２
：トランジスタ。
FIG. 1 is a circuit diagram showing a light emitting diode driving circuit according to the present invention, and FIG. 2 is a circuit diagram showing a conventional light emitting diode driving circuit. D1, D2: Light emitting diode, Tr1, Tr2
:Transistor.
Claims (1)
ドとを切り替えて発光させる発光ダイオード駆動
回路において、電流制限用の第１の抵抗とスイツ
チ手段とを直列接続し、電流制限用の第２の抵抗
と電圧降下手段を直列接続し、上記第１の抵抗、
スイツチ手段、第２の抵抗、および電圧降下手段
にてブリツジ回路を構成し、上記第１の抵抗と上
記スイツチ手段の共通接続点と、上記第２の抵抗
と上記電圧降下手段の共通接続点との間に、上記
第１の発光ダイオードと第２の発光ダイオードと
を逆並列に接続し、上記第１の抵抗と上記第２の
抵抗との共通接続点と、上記スイツチ手段と上記
電圧降下手段との共通接続点との間に電源電圧を
供給してなる事を特徴とする発光ダイオード駆動
回路。 In a light emitting diode drive circuit that switches between a first light emitting diode and a second light emitting diode to emit light, a first resistor for current limiting and a switching means are connected in series, and a second resistor for current limiting and a switching means are connected in series. Voltage dropping means are connected in series, the first resistor,
A bridge circuit is constituted by a switch means, a second resistor, and a voltage drop means, and a common connection point between the first resistor and the switch means, and a common connection point between the second resistor and the voltage drop means. between, the first light emitting diode and the second light emitting diode are connected in antiparallel, and a common connection point between the first resistor and the second resistor, the switch means and the voltage drop means are connected. A light emitting diode drive circuit characterized by supplying a power supply voltage between a common connection point and a common connection point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985024730U JPS61142462U (en) | 1985-02-25 | 1985-02-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985024730U JPS61142462U (en) | 1985-02-25 | 1985-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61142462U true JPS61142462U (en) | 1986-09-03 |
Family
ID=30519156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985024730U Pending JPS61142462U (en) | 1985-02-25 | 1985-02-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61142462U (en) |
-
1985
- 1985-02-25 JP JP1985024730U patent/JPS61142462U/ja active Pending