JPS55159629A - Switching unit - Google Patents
Switching unitInfo
- 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
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.
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) |
-
1979
- 1979-05-31 JP JP6787879A patent/JPS55159629A/en active Pending
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