JPS61180558U - - Google Patents
Info
- Publication number
- JPS61180558U JPS61180558U JP6320185U JP6320185U JPS61180558U JP S61180558 U JPS61180558 U JP S61180558U JP 6320185 U JP6320185 U JP 6320185U JP 6320185 U JP6320185 U JP 6320185U JP S61180558 U JPS61180558 U JP S61180558U
- Authority
- JP
- Japan
- Prior art keywords
- light
- power supply
- photocoupler
- receiving element
- circuit
- 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
- 230000006378 damage Effects 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Description
第１図は本考案一実施例の電子機器の構成を示
す回路図、第２図は第１図の電子機器において商
用電源ケーブルと信号出力ケーブルを逆に誤接続
した状態を示す回路図、第３図は本考案変形例の
電子機器の構成を示す回路図、第４図は電子機器
における従来の保護回路例を示す回路図である。
１……信号処理回路、２……電源回路、４ａ…
…発光素子、４ｂ……受光素子、５ａ，５ｂ……
信号出力端子、６……負荷抵抗、７ａ，７ｂ……
電源供給端子、８……商用電源、１０ａ，１０ｂ
……信号出力配線。
FIG. 1 is a circuit diagram showing the configuration of an electronic device according to an embodiment of the present invention, FIG. FIG. 3 is a circuit diagram showing the configuration of an electronic device according to a modification of the present invention, and FIG. 4 is a circuit diagram showing an example of a conventional protection circuit in the electronic device. 1... Signal processing circuit, 2... Power supply circuit, 4a...
...Light emitting element, 4b... Light receiving element, 5a, 5b...
Signal output terminal, 6...Load resistance, 7a, 7b...
Power supply terminal, 8...Commercial power supply, 10a, 10b
...Signal output wiring.
Claims (1)
される電源回路と、この電源回路から給電線を介
して所要の電力を供給されて作動し信号出力端子
を介して出力信号を出力する信号処理回路とを具
備した電子機器において、前記電源回路が前記商
用電源により付勢されたときに発光する発光素子
と、前記信号処理回路の信号出力端子への信号出
力配線に出力信号を通す向きに挿入接続され前記
発光素子が発光したときその発光を受光して導通
状態になる受光素子とを具備して構成され、前記
信号出力端子に誤つて商用電源が接続されたとき
に前記電源回路が付勢されないため前記受光素子
が非導通状態を維持していることにより商用電源
の印加による前記信号処理回路の破壊が防止され
ることを特徴とする電子機器。 (2) 発光素子及び受光素子としてフオトカプラ
を用いたことを特徴とする実用新案登録請求の範
囲第(1)項記載の電子機器。 (3) 発光素子および受光素子としてフオトサイ
リスタを用いたことを特徴とする実用新案登録請
求の範囲第(1)項記載の電子機器。 (4) 信号処理回路と出力回路との間が回路絶縁
および信号伝達の機能を果たす第１のフオトカプ
ラで接続され且つこの第１のフオトカプラの受光
素子と直列に第２のフオトカプラの発光素子が接
続され、この第２のフオトカプラの発光素子の発
光を受光したとき導通状態になる第２のフオトカ
プラの受光素子が前記出力回路の信号出力端子へ
の信号出力配線に挿入接続されたことを特徴とす
る実用新案登録請求の範囲第(1)項記載の電子機
器。[Claims for Utility Model Registration] (1) A power supply circuit that is energized by a commercial power supply through a power supply terminal, and a signal output terminal that is operated by being supplied with the required power from this power supply circuit through a power supply line. A light emitting element that emits light when the power supply circuit is energized by the commercial power supply; and a signal output terminal of the signal processing circuit. A light-receiving element is inserted and connected to the wiring in a direction in which an output signal is passed, and when the light-emitting element emits light, the light-receiving element receives the light emission and becomes conductive. An electronic device characterized in that when the power supply circuit is not energized, the light receiving element maintains a non-conducting state, thereby preventing destruction of the signal processing circuit due to application of commercial power. (2) The electronic device according to claim (1) of the utility model registration, characterized in that a photocoupler is used as the light-emitting element and the light-receiving element. (3) The electronic device according to claim (1) of the utility model registration, characterized in that a photothyristor is used as the light-emitting element and the light-receiving element. (4) The signal processing circuit and the output circuit are connected by a first photocoupler that functions as circuit insulation and signal transmission, and a light emitting element of a second photocoupler is connected in series with the light receiving element of the first photocoupler. and a light receiving element of the second photocoupler which becomes conductive when receiving light emitted from the light emitting element of the second photocoupler is inserted and connected to the signal output wiring to the signal output terminal of the output circuit. An electronic device according to claim (1) of the utility model registration claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6320185U JPH0323807Y2 (en) | 1985-04-30 | 1985-04-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6320185U JPH0323807Y2 (en) | 1985-04-30 | 1985-04-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61180558U true JPS61180558U (en) | 1986-11-11 |
| JPH0323807Y2 JPH0323807Y2 (en) | 1991-05-23 |
Family
ID=30593120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6320185U Expired JPH0323807Y2 (en) | 1985-04-30 | 1985-04-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0323807Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010019576A (en) * | 2008-07-08 | 2010-01-28 | Yamatake Corp | Miswiring detector |
-
1985
- 1985-04-30 JP JP6320185U patent/JPH0323807Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010019576A (en) * | 2008-07-08 | 2010-01-28 | Yamatake Corp | Miswiring detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0323807Y2 (en) | 1991-05-23 |
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