JPS6059547U - Constant current light emitting diode lighting circuit - Google Patents
Constant current light emitting diode lighting circuitInfo
- Publication number
- JPS6059547U JPS6059547U JP1983150641U JP15064183U JPS6059547U JP S6059547 U JPS6059547 U JP S6059547U JP 1983150641 U JP1983150641 U JP 1983150641U JP 15064183 U JP15064183 U JP 15064183U JP S6059547 U JPS6059547 U JP S6059547U
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- emitting diode
- constant current
- lighting circuit
- power supply
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図および第２図は従来の発光ダイオードの点灯回路
を示す。第３図は本考案の定電流発光ダイオード点灯回
路の一実施例、第４図は本考案の定電流発光ダイオード
点灯回路能の実施例を示す。
Ｔ１：ＰＮＰトランジスタ、Ｔ、：ＮＰＮ）ランジスタ
、Ｄ□、 Ｄ２． Ｄ３． Ｄ、、 ［）５：発光ダイ
オード、Ｒ，、Ｒ２，Ｒ３，Ｒ，：抵抗。1 and 2 show conventional lighting circuits for light emitting diodes. FIG. 3 shows an embodiment of the constant current light emitting diode lighting circuit of the present invention, and FIG. 4 shows an embodiment of the constant current light emitting diode lighting circuit of the present invention. T1: PNP transistor, T, :NPN) transistor, D□, D2. D3. D,, [)5: Light emitting diode, R,, R2, R3, R,: Resistor.
Claims (1)
正極に接続するとともにコレクタを少なくとも１個が発
光ダイオードである複数のダイオードを含む第１の負荷
回路を介して上記直流電源負極に接続し、ＮＰＮトラン
ジスタのエミ゛ツタを抵抗を介して直流電源負極に接続
するとともにコレクタを少なくとも１個が発光ダイオー
ドである複数のダイオードを含む第２の負荷回路を介し
て上記直流電源正極に接続し、さらに、上記ＰＮＰトラ
ンジスタのベースを上記ＰＮＰ）ランジスタのベースと
上記正極との間に上記第２の負荷回路の少なくとも１個
のダイオードを介する点に接続するとともに上記ＮＰＮ
）ランジスタのベースを上記ＮＰＮトランジスタのベー
スと上記負極との間に上記第１の負極回路の少なくとも
１個のダイオードを介する点に接続し、上記複数の発光
ダイオードに定電流を流すようにしたことを特徴とする
定電流発光ダイオード点灯回路。 ２ 上記第１および第２の負荷回路はそれぞれ２個の発
光ダイオードを直列接続してなり、上記 □トラン
ジスタのベースはそれぞれ各直列回路を構成する発光ダ
イオードの接続点に接続してなる実用新案登録請求の範
囲第１項記載の定電流発光ダイオード点灯回路。[Claims for Utility Model Registration] The emitter of the PNP transistor is connected to the positive electrode of the DC power supply through a resistor, and the collector is connected to the DC power supply through a first load circuit including a plurality of diodes, at least one of which is a light emitting diode. The emitter of the NPN transistor is connected to the negative pole of the DC power supply through a resistor, and the collector is connected to the positive pole of the DC power supply through a second load circuit including a plurality of diodes, at least one of which is a light emitting diode. Further, the base of the PNP transistor is connected to a point between the base of the PNP transistor and the positive electrode through at least one diode of the second load circuit, and the NPN
) The base of the transistor is connected to a point between the base of the NPN transistor and the negative electrode through at least one diode of the first negative electrode circuit, and a constant current is caused to flow through the plurality of light emitting diodes. A constant current light emitting diode lighting circuit featuring: 2 The above first and second load circuits each consist of two light emitting diodes connected in series, and the bases of the above □transistors are connected to the connection points of the light emitting diodes forming each series circuit.Registered utility model. A constant current light emitting diode lighting circuit according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983150641U JPS6059547U (en) | 1983-09-30 | 1983-09-30 | Constant current light emitting diode lighting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983150641U JPS6059547U (en) | 1983-09-30 | 1983-09-30 | Constant current light emitting diode lighting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6059547U true JPS6059547U (en) | 1985-04-25 |
Family
ID=30334052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983150641U Pending JPS6059547U (en) | 1983-09-30 | 1983-09-30 | Constant current light emitting diode lighting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6059547U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008053695A (en) * | 2006-07-25 | 2008-03-06 | Toshiba Lighting & Technology Corp | Drive device and lighting fixture for light-emitting diode |
-
1983
- 1983-09-30 JP JP1983150641U patent/JPS6059547U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008053695A (en) * | 2006-07-25 | 2008-03-06 | Toshiba Lighting & Technology Corp | Drive device and lighting fixture for light-emitting diode |
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