JPS6037936U - Operation display circuit - Google Patents
Operation display circuitInfo
- Publication number
- JPS6037936U JPS6037936U JP12855283U JP12855283U JPS6037936U JP S6037936 U JPS6037936 U JP S6037936U JP 12855283 U JP12855283 U JP 12855283U JP 12855283 U JP12855283 U JP 12855283U JP S6037936 U JPS6037936 U JP S6037936U
- Authority
- JP
- Japan
- Prior art keywords
- base
- light emitting
- emitting diode
- switching transistor
- 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.)
- Granted
Links
Landscapes
- Electronic Switches (AREA)
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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図面はいずれも本考案の動作表示回路を示し、第１図は
単極双投スイッチを使用した実施例、第２図、第３図お
よび第４図は本考案の他の実施例を示す回路図である。
Ｑ、、 Ｑ、・・・・・・第１および第２スイツチング
・トランジスタ、Ｄ□・・・・・・発光ダイオード、Ｓ
ｌ・・・・・・０Ｎ−ＯＦＦ切換スイッチ、Ｒ２１Ｒ４
・・・・・・ベース抵抗、Ｄ２・・・・・・電流阻止用
ダイオード、Ｌｏ・・・・・・負荷。The drawings all show the operation display circuit of the present invention, and FIG. 1 shows an embodiment using a single-pole double-throw switch, and FIGS. 2, 3, and 4 show circuits showing other embodiments of the present invention. It is a diagram. Q,, Q,...First and second switching transistors, D□...Light emitting diode, S
l...0N-OFF switch, R21R4
...Base resistance, D2... Current blocking diode, Lo... Load.
Claims (3)
が直列に接続され且つコレクタ或はエミッタのいずれか
高電位点とベース間にベース・バイアス供給用の第１ベ
ース抵抗が接続された第１スイツチング・トランジスタ
と、他方の直流電源供給路と前記トランジスタのベース
側との間にエミッタ・コレクタ筋路が接続され且つ前記
高電位点とベース間にベース・バイアス供給用の第２べ
゛−ス抵抗が接続された第２スイツチング・トランジス
タと、前記高電位点と前記傘２ベース抵抗のベース側端
子との間に接続され゛ た動作表示用発光ダイオード
と、該発光ダイオードの前記高電位点側とは異なる側の
端子と前記他方の直流電源供給路との間に接続された０
Ｎ−ＯＦＦ切換スイッチとを備え、該スイッチの制御に
よ゛す、前記第１スイツチング・トランジスタが導通す
ると共に前記発光ダイオードが点灯することを特徴とす
る動作表示回路。(1) An emitter-collector line is connected in series to one DC power supply line, and a first base resistor for supplying a base bias is connected between the high potential point of either the collector or the emitter and the base. An emitter-collector path is connected between one switching transistor and the other DC power supply path and the base side of the transistor, and a second path for supplying a base bias between the high potential point and the base. a second switching transistor to which the base resistor is connected; a light emitting diode for indicating operation connected between the high potential point and the base side terminal of the umbrella 2 base resistor; 0 connected between the terminal on the side different from the side and the other DC power supply path.
1. An operation display circuit comprising: an N-OFF changeover switch, and under the control of the switch, the first switching transistor becomes conductive and the light emitting diode lights up.
あり、共通端子が前記発光ダイオードの前記高電位点と
は異なる側の端子に接続され他の端子がそれぞれ一方お
よび他方の直流電源供給路に接続された実用新案登録請
求の範囲第１項に記載の動作表示回路。(2) The ON-OFF changeover switch is a single-pole double-throw switch, with a common terminal connected to a terminal on a side different from the high potential point of the light emitting diode, and other terminals connected to one and the other DC power supply path, respectively. The operation display circuit according to claim 1 of the utility model registration claim, which is connected to the circuit.
前記発光ダイオードから前記第２スイツチング・トラン
ジスタのベースへ流れる電流を阻止する方向に前記発光
ダイオードと前記第２スイツチング・トランジスタのベ
ース間に一方向導電素子を接続してなる実用新案登録請
求の範囲第１項に記載の動作表示回路。(3) A unidirectional conductive element between the light emitting diode and the base of the second switching transistor in a direction to block current flowing from the light emitting diode to the base of the second switching transistor when the power is turned off by the ON-OFF switch. An operation display circuit according to claim 1 of the registered utility model claim, which is formed by connecting:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12855283U JPS6037936U (en) | 1983-08-19 | 1983-08-19 | Operation display circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12855283U JPS6037936U (en) | 1983-08-19 | 1983-08-19 | Operation display circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6037936U true JPS6037936U (en) | 1985-03-15 |
| JPH0326681Y2 JPH0326681Y2 (en) | 1991-06-10 |
Family
ID=30291579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12855283U Granted JPS6037936U (en) | 1983-08-19 | 1983-08-19 | Operation display circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6037936U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53133583U (en) * | 1977-03-30 | 1978-10-23 |
-
1983
- 1983-08-19 JP JP12855283U patent/JPS6037936U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53133583U (en) * | 1977-03-30 | 1978-10-23 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0326681Y2 (en) | 1991-06-10 |
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