JPS55159629A - Switching unit - Google Patents

Switching unit

Info

Publication number
JPS55159629A
JPS55159629A JP6787879A JP6787879A JPS55159629A JP S55159629 A JPS55159629 A JP S55159629A JP 6787879 A JP6787879 A JP 6787879A JP 6787879 A JP6787879 A JP 6787879A JP S55159629 A JPS55159629 A JP S55159629A
Authority
JP
Japan
Prior art keywords
power supply
contact
load
stopped
switching unit
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
Application number
JP6787879A
Other languages
Japanese (ja)
Inventor
Yoshihisa Ishigami
Hideki Fukusono
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP6787879A priority Critical patent/JPS55159629A/en
Publication of JPS55159629A publication Critical patent/JPS55159629A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To enable the switching of DC power supply, by connecting a transistor in parallel with a contact connected to the power supply circuit of a load. CONSTITUTION:When a relay coil 1 is excited, a contact 4 is closed and a transistor (Tr)10 turns on, a load 5 is energized from a DC power supply 11, and after that a contact 3 is closed. Next, when the power supply to the load 5 is stopped, and when the excitation to the coil 1 is stopped, the contact 4 is opened after the contact 3 is opened. Then, Tr10 is OFF and the power supply to the load 5 is stopped. Thus, at the start and stop of power supply, only Tr10 is inserted to the power supply circuit and the contact 3 is also inserted to the power supply circuit during the power supply in other cases. Accordingly, no arc is produced to the contact 3 and switching for a large current can be made.
JP6787879A 1979-05-31 1979-05-31 Switching unit Pending JPS55159629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6787879A JPS55159629A (en) 1979-05-31 1979-05-31 Switching unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6787879A JPS55159629A (en) 1979-05-31 1979-05-31 Switching unit

Publications (1)

Publication Number Publication Date
JPS55159629A true JPS55159629A (en) 1980-12-11

Family

ID=13357597

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6787879A Pending JPS55159629A (en) 1979-05-31 1979-05-31 Switching unit

Country Status (1)

Country Link
JP (1) JPS55159629A (en)

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