JPS6214588U - - Google Patents
Info
- Publication number
- JPS6214588U JPS6214588U JP10222185U JP10222185U JPS6214588U JP S6214588 U JPS6214588 U JP S6214588U JP 10222185 U JP10222185 U JP 10222185U JP 10222185 U JP10222185 U JP 10222185U JP S6214588 U JPS6214588 U JP S6214588U
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- emitting diode
- drive transistor
- input signal
- control input
- 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 description 1
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Audible And Visible Signals (AREA)
Description
第１図は本考案の発光ダイオードの駆動回路、
第２図は従来の同回路を示す。
主な図番の説明、１…ＬＥＤ、２…駆動トラン
ジスタ、３…時定数回路、４…抵抗、５…コンデ
ンサ、６…制御入力信号端子、９…直列回路、１
０…抵抗、１１…ツエナーダイオード。
Figure 1 shows the light emitting diode drive circuit of the present invention.
FIG. 2 shows the conventional circuit. Explanation of main figure numbers, 1...LED, 2...Drive transistor, 3...Time constant circuit, 4...Resistor, 5...Capacitor, 6...Control input signal terminal, 9...Series circuit, 1
0... Resistor, 11... Zener diode.
Claims (1)
入力側に設けた時定数回路と、該駆動トランジス
タの出力端に接続された発光ダイオードより成り
、前記制御入力信号により前記発光ダイオードを
点灯又は消灯の制御を行う発光ダイオード駆動回
路において、前記駆動トランジスタのエミツタを
、直流電源端子とアース間に接続したツエナーダ
イオードより成る直列回路の共通接続点に接続し
、前記制御信号のハイレベル又はローレベルの変
化時前記発光ダイオードを確実に点灯又は消灯さ
れることを特徴とした発光ダイオードの駆動回路
。 It consists of a time constant circuit provided on the input side of a drive transistor to which a control input signal is applied, and a light emitting diode connected to the output terminal of the drive transistor, and controls turning on or off of the light emitting diode according to the control input signal. In the light emitting diode drive circuit, the emitter of the drive transistor is connected to a common connection point of a series circuit consisting of a Zener diode connected between a DC power supply terminal and the ground, and the light emission occurs when the control signal changes to a high level or a low level. A light emitting diode drive circuit characterized in that the diode is reliably turned on or off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10222185U JPS6214588U (en) | 1985-07-04 | 1985-07-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10222185U JPS6214588U (en) | 1985-07-04 | 1985-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6214588U true JPS6214588U (en) | 1987-01-28 |
Family
ID=30973672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10222185U Pending JPS6214588U (en) | 1985-07-04 | 1985-07-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6214588U (en) |
-
1985
- 1985-07-04 JP JP10222185U patent/JPS6214588U/ja active Pending