JPS61138634U - - Google Patents
Info
- Publication number
- JPS61138634U JPS61138634U JP12349784U JP12349784U JPS61138634U JP S61138634 U JPS61138634 U JP S61138634U JP 12349784 U JP12349784 U JP 12349784U JP 12349784 U JP12349784 U JP 12349784U JP S61138634 U JPS61138634 U JP S61138634U
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- resistor
- light emitting
- power source
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Audible And Visible Signals (AREA)
Description
第１図は従来例の要部回路図、第２図は本考案
一実施例の要部回路図である。
１…バツテリー、２…ヘツドランプスイツチ、
３…ヘツドランプ、４…照光表示用発光ダイオー
ド、５…発光ダイオード４の電流制限抵抗、１０
…逆流防止用ダイオード、１１…ツエナーダイオ
ード、１２…ダイオード、１３…抵抗。
FIG. 1 is a circuit diagram of a main part of a conventional example, and FIG. 2 is a circuit diagram of a main part of an embodiment of the present invention. 1...Battery, 2...Head lamp switch,
3... Head lamp, 4... Light emitting diode for illumination display, 5... Current limiting resistor of light emitting diode 4, 10
... Diode for backflow prevention, 11... Zener diode, 12... Diode, 13... Resistor.
Claims (1)
光素子のカソードとアース間に接続された電源制
限抵抗と、該抵抗に並列に接続され、カソードを
抵抗を介してアースに接続した整流素子とからな
り、該整流素子のカソードに前記電源と同じ極性
の電圧が印加されるようにしたことを特徴とする
照光式表示器の照度自動切換回路。 A light emitting element whose anode is connected to a power source, a power supply limiting resistor connected between the cathode of the light emitting element and ground, and a rectifier element connected in parallel to the resistor and whose cathode is connected to ground via the resistor. An automatic illuminance switching circuit for an illuminated display, characterized in that a voltage of the same polarity as the power source is applied to the cathode of the rectifying element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12349784U JPS61138634U (en) | 1984-08-11 | 1984-08-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12349784U JPS61138634U (en) | 1984-08-11 | 1984-08-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61138634U true JPS61138634U (en) | 1986-08-28 |
Family
ID=30682245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12349784U Pending JPS61138634U (en) | 1984-08-11 | 1984-08-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61138634U (en) |
-
1984
- 1984-08-11 JP JP12349784U patent/JPS61138634U/ja active Pending