JPS54129344A - Protective device for dc power source - Google Patents
Protective device for dc power sourceInfo
- Publication number
- JPS54129344A JPS54129344A JP3707278A JP3707278A JPS54129344A JP S54129344 A JPS54129344 A JP S54129344A JP 3707278 A JP3707278 A JP 3707278A JP 3707278 A JP3707278 A JP 3707278A JP S54129344 A JPS54129344 A JP S54129344A
- Authority
- JP
- Japan
- Prior art keywords
- current
- power source
- load
- flow
- rectifier
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE: To prevent the inflow of overcurrent with a breaking reliability enhanced as well, by means of flowing a current in the diode, which is connected between the main power source and the load in an opposite direction to that of load current flow, through circuitry comprising a reactor and a circuit having a high speed switching function.
CONSTITUTION: With a GTO-SCR35 made on, a current IC flows in a diode D34, which is connected in an opposite direction to that of current flow in a load 7, from an auxiliary DC power source comprising a transformer 32, a rectifier 33, etc., consequently, the voltage across poles of the D34 comes to be about 1V, with a load current IL starting to flow from the main DC power source. With the above described current IC, IL intended to be in a state of IC<IL, the D34 comes to be in a state of reverse bias and turned off, and the current IL tends to flow in a circuit routed the SCR35-reactor 36 - rectifier 33. Accordingly, the relation will be kept in a state of IL=IC either by enlarging an inductance of the reactor 36 or by additionally providing a constant current controller to the rectifier 33. In this way, the inflow of overcurrent can be prevented with a breaking reliability improved as well.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3707278A JPS54129344A (en) | 1978-03-30 | 1978-03-30 | Protective device for dc power source |
SE7813058A SE436673B (en) | 1977-12-27 | 1978-12-19 | LIKSPENNINGSAGGREGAT |
US05/973,561 US4212054A (en) | 1977-12-27 | 1978-12-27 | DC Power source |
DE2856268A DE2856268C2 (en) | 1977-12-27 | 1978-12-27 | Protective device for a rectifier circuit |
CH1319478A CH634446A5 (en) | 1977-12-27 | 1978-12-27 | Dc power supply. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3707278A JPS54129344A (en) | 1978-03-30 | 1978-03-30 | Protective device for dc power source |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54129344A true JPS54129344A (en) | 1979-10-06 |
Family
ID=12487337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3707278A Pending JPS54129344A (en) | 1977-12-27 | 1978-03-30 | Protective device for dc power source |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54129344A (en) |
-
1978
- 1978-03-30 JP JP3707278A patent/JPS54129344A/en active Pending
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