JPH01103953U - - Google Patents
Info
- Publication number
- JPH01103953U JPH01103953U JP19743587U JP19743587U JPH01103953U JP H01103953 U JPH01103953 U JP H01103953U JP 19743587 U JP19743587 U JP 19743587U JP 19743587 U JP19743587 U JP 19743587U JP H01103953 U JPH01103953 U JP H01103953U
- Authority
- JP
- Japan
- Prior art keywords
- series
- capacitor
- signal sending
- circuit
- switching
- 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
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
Landscapes
- Devices For Supply Of Signal Current (AREA)
Description
第１図ａ，ｂは本考案の一実施例を示す信号送
出回路の回路図、第２図ａ，ｂは従来の信号送出
回路の回路図である。
１０ａ〜１０ｄ……端子、１１……リレー、１
１ａ……接点（スイツチ）、１１ｂ……コイル、
１２，１２ａ，１２ｂ……トランジスタ、Ｒ１〜
Ｒ４……抵抗、Ｃ１……コンデンサ、Ｄ１，Ｄ３
……ダイオード。
1A and 1B are circuit diagrams of a signal transmission circuit showing an embodiment of the present invention, and FIGS. 2A and 2B are circuit diagrams of a conventional signal transmission circuit. 10a-10d...Terminal, 11...Relay, 1
1a... Contact (switch), 11b... Coil,
12, 12a, 12b...Transistor, R1~
R4...Resistor, C1...Capacitor, D1, D3
……diode.
Claims (1)
に接続されるスイツチ素子と、これを電気的に絶
縁された状態で駆動する駆動素子とから成る第１
のスイツチング素子と、 前記駆動素子と直列に接続される第２のスイツ
チング素子と、 前記駆動素子と第２のスイツチング素子の直列
回路に並列に接続されると共に電源端子間に接続
されるコンデンサと、 電源断時に、前記直列回路側以外に、前記コン
デンサの放電電流の流れを防止するため当該コン
デンサの少なくとも一方の端子側の電源ラインに
挿入されるダイオードとを具備することを特徴と
する信号送出回路。 (2) 前記第１のスイツチング素子がリレーであ
る実用新案登録請求の範囲第１項記載の信号送出
回路。 (3) 前記第１のスイツチング回路がホトカプラ
である実用新案登録請求の範囲第１項記載の信号
送出回路。[Claims for Utility Model Registration] (1) A first switch element consisting of a switch element connected in series through a resistor between terminals for transmitting a signal, and a drive element that drives the switch element in an electrically insulated state.
a second switching element connected in series with the drive element; a capacitor connected in parallel to the series circuit of the drive element and the second switching element and between power supply terminals; A signal sending circuit comprising, in addition to the series circuit side, a diode that is inserted into the power line on at least one terminal side of the capacitor in order to prevent the flow of discharge current of the capacitor when the power is cut off. . (2) The signal sending circuit according to claim 1, wherein the first switching element is a relay. (3) The signal sending circuit according to claim 1, wherein the first switching circuit is a photocoupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19743587U JPH01103953U (en) | 1987-12-28 | 1987-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19743587U JPH01103953U (en) | 1987-12-28 | 1987-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01103953U true JPH01103953U (en) | 1989-07-13 |
Family
ID=31487985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19743587U Pending JPH01103953U (en) | 1987-12-28 | 1987-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01103953U (en) |
-
1987
- 1987-12-28 JP JP19743587U patent/JPH01103953U/ja active Pending
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