JPS5485664A - Relay driving unit - Google Patents
Relay driving unitInfo
- Publication number
- JPS5485664A JPS5485664A JP15402477A JP15402477A JPS5485664A JP S5485664 A JPS5485664 A JP S5485664A JP 15402477 A JP15402477 A JP 15402477A JP 15402477 A JP15402477 A JP 15402477A JP S5485664 A JPS5485664 A JP S5485664A
- Authority
- JP
- Japan
- Prior art keywords
- relay
- switch
- capacitor
- load
- 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
Abstract
PURPOSE: To prevent the shock sound at power supply application with a simple circuit, by interrupting the signal line through the relay drive for a given time at the application of power supply.
CONSTITUTION: The series circuit consisting of the capacitor 3, resistor 4, and relay 5, and the load 7 are connected between the power supply lines 9 and 10, the relay switch 5a which is operated with the relay 5 is connected between the load 7 and the output terminal 8, and diode 6 is placed in parallel with the resistor 4 and relay 5. When the switch 2 is closed, the relay 5 is operated with the charging current flowing to the capacitor 3, closing the switch 5a and interrupting the output of the load 7. But, after a given time, the charge of the capacitor 3 is finished, inoperating the relay 5, and the switch 5a is opened and the output of the load 7 is delivered to the terminal 8. Nest, when the switch 2 is opened, the charge of the capacitor 3 is almost instantly discharged via the diode 6, and the relay 5 is inoperative and the switch 5a does not open or close. Accordingly, the relay 5 surely operates even if the switch 2 is continuously switched for a short time, and the shock sound of power application can be avoided.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15402477A JPS5485664A (en) | 1977-12-20 | 1977-12-20 | Relay driving unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15402477A JPS5485664A (en) | 1977-12-20 | 1977-12-20 | Relay driving unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5485664A true JPS5485664A (en) | 1979-07-07 |
JPS556980B2 JPS556980B2 (en) | 1980-02-21 |
Family
ID=15575229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15402477A Granted JPS5485664A (en) | 1977-12-20 | 1977-12-20 | Relay driving unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5485664A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5960838A (en) * | 1982-08-30 | 1984-04-06 | シ−メンス・アクチエンゲゼルシヤフト | Demagnetizing circuit device for dc exciting electromagneticcoil |
-
1977
- 1977-12-20 JP JP15402477A patent/JPS5485664A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5960838A (en) * | 1982-08-30 | 1984-04-06 | シ−メンス・アクチエンゲゼルシヤフト | Demagnetizing circuit device for dc exciting electromagneticcoil |
Also Published As
Publication number | Publication date |
---|---|
JPS556980B2 (en) | 1980-02-21 |
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