JPH0258354U - - Google Patents
Info
- Publication number
- JPH0258354U JPH0258354U JP13689288U JP13689288U JPH0258354U JP H0258354 U JPH0258354 U JP H0258354U JP 13689288 U JP13689288 U JP 13689288U JP 13689288 U JP13689288 U JP 13689288U JP H0258354 U JPH0258354 U JP H0258354U
- Authority
- JP
- Japan
- Prior art keywords
- emitter
- collector
- transistor
- led
- leds
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Audible And Visible Signals (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は従来のＬＥＤ駆動回路を示す回路図である。
主な図番の説明、６……トランジスタ、８……
第１ＬＥＤ、１１……ダイオード、１２……第２
ＬＥＤ。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing a conventional LED drive circuit. Explanation of main figure numbers, 6...transistor, 8...
1st LED, 11...diode, 12...2nd
LED.
Claims (1)
ＬＥＤの一方を選択的に点灯させるＬＥＤ駆動回
路において、コレクタ・エミツタ間が前記第１Ｌ
ＥＤに順方向に接続されていると共に入力される
切換信号に応じて駆動されるトランジスタと、該
トランジスタのコレクタ・エミツタ間に順方向に
接続されていると共に前記第１ＬＥＤに並列に接
続されたダイオードとを設け、該ダイオードを挾
んで前記トランジスタのコレクタ・エミツタ間に
並列に前記第２ＬＥＤを接続したことを特徴とす
るＬＥＤ駆動回路。 first and second LEDs;
In an LED drive circuit that selectively lights one of the LEDs, the first L is located between the collector and the emitter.
a transistor connected in the forward direction to the ED and driven according to the input switching signal; and a diode connected in the forward direction between the collector and emitter of the transistor and connected in parallel to the first LED. and the second LED is connected in parallel between the collector and emitter of the transistor with the diode in between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13689288U JP2521232Y2 (en) | 1988-10-20 | 1988-10-20 | LED drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13689288U JP2521232Y2 (en) | 1988-10-20 | 1988-10-20 | LED drive circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0258354U true JPH0258354U (en) | 1990-04-26 |
| JP2521232Y2 JP2521232Y2 (en) | 1996-12-25 |
Family
ID=31397824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13689288U Expired - Lifetime JP2521232Y2 (en) | 1988-10-20 | 1988-10-20 | LED drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2521232Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015153908A (en) * | 2014-02-14 | 2015-08-24 | アイコム株式会社 | Led lighting circuit and charger using the same |
-
1988
- 1988-10-20 JP JP13689288U patent/JP2521232Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015153908A (en) * | 2014-02-14 | 2015-08-24 | アイコム株式会社 | Led lighting circuit and charger using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2521232Y2 (en) | 1996-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0258354U (en) | ||
| JPS61183005U (en) | ||
| JPS63162393U (en) | ||
| JPS61105248U (en) | ||
| JPS6124384U (en) | bicycle headlight | |
| JPH01143155U (en) | ||
| JPS61196386U (en) | ||
| JPH01107281U (en) | ||
| JPS6390321U (en) | ||
| JPS5946034U (en) | Non-contact switching circuit | |
| JPS5850486U (en) | Light emitting diode display circuit | |
| JPS60163748U (en) | integrated circuit | |
| JPH0448722U (en) | ||
| JPS6336064U (en) | ||
| JPS5923760U (en) | Light emitting diode switching circuit | |
| JPS63140658U (en) | ||
| JPS6336065U (en) | ||
| JPS6343194U (en) | ||
| JPS6289171U (en) | ||
| JPS6424867U (en) | ||
| JPH0334257U (en) | ||
| JPS63198229U (en) | ||
| JPS6359428U (en) | ||
| JPH0211526U (en) | ||
| JPS59187241U (en) | transistor output circuit |