JPS5485664A - Relay driving unit - Google Patents

Relay driving unit

Info

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
Application number
JP15402477A
Other languages
Japanese (ja)
Other versions
JPS556980B2 (en
Inventor
Shinichiro Hosokawa
Shinya Sano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15402477A priority Critical patent/JPS5485664A/en
Publication of JPS5485664A publication Critical patent/JPS5485664A/en
Publication of JPS556980B2 publication Critical patent/JPS556980B2/ja
Granted legal-status Critical Current

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
JP15402477A 1977-12-20 1977-12-20 Relay driving unit Granted JPS5485664A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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