JPS63158030U - - Google Patents
Info
- Publication number
- JPS63158030U JPS63158030U JP4909387U JP4909387U JPS63158030U JP S63158030 U JPS63158030 U JP S63158030U JP 4909387 U JP4909387 U JP 4909387U JP 4909387 U JP4909387 U JP 4909387U JP S63158030 U JPS63158030 U JP S63158030U
- Authority
- JP
- Japan
- Prior art keywords
- phototransistor
- contact
- phototransistors
- collector
- emitting diode
- 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 6
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Electronic Switches (AREA)
- Logic Circuits (AREA)
Description
第1図は、本考案の1個の発光ダイオードで、
a接点、b接点を同時に得ることができる1個の
フオトカツプラの回路図、第2図は本考案の変形
例を示す回路図、第3図は、従来のフオトカツプ
ラの等価回路を示す回路図、第4図は従来のフオ
トカツプラを用いて同一入力信号で複数個の出力
を得るための1例を示す回路図。第5図は、最近
提案された、1個の発光ダイオードで複数個のフ
オトトランジスタを駆動し、複数の出力を得るこ
とができるフオトカツプラの回路図。第6図は、
従来のフオトカツプラを用いて、a接点、b接点
出力を同時に得ようとする場合の1例の回路図で
ある。
1,1a,1b,1c……従来のフオトカツプ
ラ、2,2a,2b,2c……発光ダイオード、
3,3a,3b,3c……フオトトランジスタ、
4……光、5,6……入力端子、7a,7b,7
c,8a,8b,8c……出力端子、9……プル
アツプ抵抗、10……入力部のドライバー回路、
11……最近提案されたフオトカツプラ、12…
…b接点リレー、13,14……出力端子、15
……本発明のフオトカツプラ、16,17……バ
イアス抵抗、18……出力トランジスタ、19,
19a,20a,20b……出力端子。
Figure 1 shows one light emitting diode of the present invention.
A circuit diagram of one photo coupler that can obtain an a contact and a b contact at the same time, FIG. 2 is a circuit diagram showing a modification of the present invention, and FIG. 3 is a circuit diagram showing an equivalent circuit of a conventional photo coupler. FIG. 4 is a circuit diagram showing an example of obtaining a plurality of outputs from the same input signal using a conventional photo coupler. FIG. 5 is a circuit diagram of a recently proposed photocoupler that can drive a plurality of phototransistors with one light emitting diode and obtain a plurality of outputs. Figure 6 shows
FIG. 2 is a circuit diagram of an example of a case where a conventional photo coupler is used to obtain outputs of a contact and a b contact at the same time. 1, 1a, 1b, 1c... conventional photo coupler, 2, 2a, 2b, 2c... light emitting diode,
3, 3a, 3b, 3c...phototransistor,
4... Light, 5, 6... Input terminal, 7a, 7b, 7
c, 8a, 8b, 8c...Output terminal, 9...Pull-up resistor, 10...Input section driver circuit,
11...Recently proposed footokatsupura, 12...
...b contact relay, 13, 14...output terminal, 15
...photo coupler of the present invention, 16, 17... bias resistor, 18... output transistor, 19,
19a, 20a, 20b...output terminals.
Claims (1)
オトトランジスタとよりなり、該フオトトランジ
スタの半数がフオトトランジスタの受ける信号を
反転する回路素子とからなることを特徴とするフ
オトカツプラ。 (2) その信号を反転する回路素子が該フオトト
ランジスタのコレクタ・エミツタ間に接続される
第1のバイアス抵抗と、該フオトトランジスタの
コレクタ接点にトランジスタのベース接点を接続
し、該トランジスタのエミツタ接点を前記フオト
トランジスタのエミツタ接点に接続し、該トラン
ジスタのベース、コレクタ間に接続される第2の
バイアス抵抗を具備したことを特徴とする実用新
案登録請求の範囲第1項記載のフオトカツプラ。[Claims for Utility Model Registration] (1) A light-emitting diode and an even number of phototransistors that receive light from the light emitting diode, and half of the phototransistors are comprised of circuit elements that invert the signals received by the phototransistors. Fuotokatsupura. (2) A circuit element for inverting the signal includes a first bias resistor connected between the collector and emitter of the phototransistor, a base contact of the transistor connected to the collector contact of the phototransistor, and an emitter contact of the transistor. 2. The photocoupler according to claim 1, further comprising a second bias resistor connected to the emitter contact of the phototransistor and between the base and collector of the phototransistor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987049093U JPH0516736Y2 (en) | 1987-04-01 | 1987-04-01 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987049093U JPH0516736Y2 (en) | 1987-04-01 | 1987-04-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63158030U true JPS63158030U (en) | 1988-10-17 |
JPH0516736Y2 JPH0516736Y2 (en) | 1993-05-06 |
Family
ID=30871227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987049093U Expired - Lifetime JPH0516736Y2 (en) | 1987-04-01 | 1987-04-01 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0516736Y2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5999544U (en) * | 1982-12-24 | 1984-07-05 | 株式会社日立製作所 | optical coupling device |
JPS59133732A (en) * | 1983-01-20 | 1984-08-01 | Toshiba Corp | Transistor driving circuit using photoelectric converting element |
-
1987
- 1987-04-01 JP JP1987049093U patent/JPH0516736Y2/ja not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5999544U (en) * | 1982-12-24 | 1984-07-05 | 株式会社日立製作所 | optical coupling device |
JPS59133732A (en) * | 1983-01-20 | 1984-08-01 | Toshiba Corp | Transistor driving circuit using photoelectric converting element |
Also Published As
Publication number | Publication date |
---|---|
JPH0516736Y2 (en) | 1993-05-06 |
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