JPS61196386U - - Google Patents
Info
- Publication number
- JPS61196386U JPS61196386U JP5781585U JP5781585U JPS61196386U JP S61196386 U JPS61196386 U JP S61196386U JP 5781585 U JP5781585 U JP 5781585U JP 5781585 U JP5781585 U JP 5781585U JP S61196386 U JPS61196386 U JP S61196386U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- state
- display element
- changeover switch
- conductive
- 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 3
Landscapes
- Audible And Visible Signals (AREA)
Description
第１図は、本考案の原理を示す回路図、第２図
は従来の表示回路を示す回路図、及び第３図は本
考案の具体回路例を示す回路図である。
主な図番の説明、１１，２０……第１トランジ
スタ、１２，２１……第２トランジスタ、１３，
２２……切換スイツチ、１７，２８……外付ピン
、１８，２９……第１ＬＥＤ、１９，３０……第
２ＬＥＤ。
FIG. 1 is a circuit diagram showing the principle of the present invention, FIG. 2 is a circuit diagram showing a conventional display circuit, and FIG. 3 is a circuit diagram showing a specific circuit example of the present invention. Explanation of main drawing numbers, 11, 20...first transistor, 12,21...second transistor, 13,
22... Selector switch, 17, 28... External pin, 18, 29... First LED, 19, 30... Second LED.
Claims (1)
と、エミツタが接地されコレクタが前記第１トラ
ンジスタのコレクタに共通接続された第２トラン
ジスタと、切換スイツチと、該切換スイツチが第
１の状態にあるとき前記第１トランジスタを導通
状態に駆動する第１駆動回路と、前記切換スイツ
チが第２の状態にあるとき前記第２トランジスタ
を導通状態に駆動する第２駆動回路と、電源と前
記第１及び第２トランジスタの共通コレクタとの
間に挿入された第１表示素子と、前記第１及び第
２トランジスタの共通コレクタとアースとの間に
挿入された第２表示素子とから成り、前記切換ス
イツチが第１の状態にあるとき前記第１トランジ
スタを導通させ、前記第２表示素子を点灯させる
とともに、前記切換スイツチが第２の状態にある
とき前記第２トランジスタを導通させ前記第１表
示素子を点灯させる様にしたことを特徴とする表
示回路。 a first transistor whose emitter is connected to a power source; a second transistor whose emitter is grounded and whose collector is commonly connected to the collector of the first transistor; a changeover switch; a first drive circuit that drives the first transistor to a conductive state; a second drive circuit that drives the second transistor to a conductive state when the changeover switch is in a second state; a first display element inserted between the common collectors of the transistors; and a second display element inserted between the common collectors of the first and second transistors and ground; When the switch is in the second state, the first transistor is made conductive and the second display element is lit; and when the changeover switch is in the second state, the second transistor is made conductive and the first display element is lit. A display circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5781585U JPS61196386U (en) | 1985-04-18 | 1985-04-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5781585U JPS61196386U (en) | 1985-04-18 | 1985-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61196386U true JPS61196386U (en) | 1986-12-08 |
Family
ID=30582705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5781585U Pending JPS61196386U (en) | 1985-04-18 | 1985-04-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61196386U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5320880A (en) * | 1976-08-11 | 1978-02-25 | Hitachi Ltd | Driving circuit of light emitting diode |
| JPS585895A (en) * | 1981-07-03 | 1983-01-13 | 松下電器産業株式会社 | Light emitting diode driver |
-
1985
- 1985-04-18 JP JP5781585U patent/JPS61196386U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5320880A (en) * | 1976-08-11 | 1978-02-25 | Hitachi Ltd | Driving circuit of light emitting diode |
| JPS585895A (en) * | 1981-07-03 | 1983-01-13 | 松下電器産業株式会社 | Light emitting diode driver |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS61196386U (en) | ||
| JPS6183007U (en) | ||
| JPS6315632U (en) | ||
| JPS60163748U (en) | integrated circuit | |
| JPS6249261U (en) | ||
| JPS62105634U (en) | ||
| JPS63158020U (en) | ||
| JPH0258354U (en) | ||
| JPS61100023U (en) | ||
| JPS6360094U (en) | ||
| JPS63155191U (en) | ||
| JPS61202916U (en) | ||
| JPS6383943U (en) | ||
| JPS62166463U (en) | ||
| JPS63198229U (en) | ||
| JPS62186530U (en) | ||
| JPS61112481U (en) | ||
| JPH02133027U (en) | ||
| JPS62161292U (en) | ||
| JPS6237387U (en) | ||
| JPS611928U (en) | One-shot pulse drive device | |
| JPH0178430U (en) | ||
| JPS6142132U (en) | Signal switching/mixing device | |
| JPS6426788U (en) | ||
| JPH01131699U (en) |