DE2149063B2 - Short-circuit protection has capacitor charged by shorts voltage spike - and opening thyristor switch on AC side of rectifier bridge - Google Patents
Short-circuit protection has capacitor charged by shorts voltage spike - and opening thyristor switch on AC side of rectifier bridgeInfo
- Publication number
- DE2149063B2 DE2149063B2 DE19712149063 DE2149063A DE2149063B2 DE 2149063 B2 DE2149063 B2 DE 2149063B2 DE 19712149063 DE19712149063 DE 19712149063 DE 2149063 A DE2149063 A DE 2149063A DE 2149063 B2 DE2149063 B2 DE 2149063B2
- Authority
- DE
- Germany
- Prior art keywords
- short
- rectifier bridge
- circuit protection
- shorts
- thyristor switch
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/082—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
- H03K17/0826—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit in bipolar transistor switches
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Rectifiers (AREA)
Abstract
The short-circuit protection circuit protects d.c. supplies against overloads arising from short circuits on the load side of the rectifier bridge. A short circuit on the d.c. side of the bridg echarges a capacitor on the bridge's a.c. side. The capacitor discharges through a resistor and biasses on a transistor, which turns off the thyristor applying the a.c. to the rectifier bridge's input. The transistor overrides the voltage normally applied to the thyristor to keep the latter on so that during the next half-period the thyristor goes open circuit and thereby prevents the supply from being overloaded.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712149063 DE2149063B2 (en) | 1971-10-01 | 1971-10-01 | Short-circuit protection has capacitor charged by shorts voltage spike - and opening thyristor switch on AC side of rectifier bridge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712149063 DE2149063B2 (en) | 1971-10-01 | 1971-10-01 | Short-circuit protection has capacitor charged by shorts voltage spike - and opening thyristor switch on AC side of rectifier bridge |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2149063A1 DE2149063A1 (en) | 1973-04-05 |
DE2149063B2 true DE2149063B2 (en) | 1975-04-10 |
Family
ID=5821191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19712149063 Ceased DE2149063B2 (en) | 1971-10-01 | 1971-10-01 | Short-circuit protection has capacitor charged by shorts voltage spike - and opening thyristor switch on AC side of rectifier bridge |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2149063B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2515655A1 (en) * | 1975-04-10 | 1976-10-21 | Walter Dipl Ing Dr In Klaschka | Protection cct. prevents damage from reversed supply poles - using two diodes in pos. and neg. lines and third coupled to signal line |
DE2545919A1 (en) * | 1975-10-14 | 1977-04-21 | Merten Kg Pulsotronic | Two pole electronic AC voltage switchgear - has monitoring and current dependent resistors for short circuit voltage drop |
DE3302864C1 (en) * | 1983-01-28 | 1983-11-03 | Euchner & Co, 7022 Leinfelden-Echterdingen | Circuit arrangement for protecting a contactlessly controllable semiconductor switch |
EP0166125A1 (en) * | 1984-05-30 | 1986-01-02 | i f m electronic gmbh | Electronic switching device, preferably operating without making contact |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2515654B2 (en) * | 1975-04-10 | 1979-10-18 | Klaschka, Walter, Dr.-Ing., 7531 Tiefenbronn | Proximity switch |
DE3446958A1 (en) * | 1984-12-21 | 1986-07-10 | Siemens AG, 1000 Berlin und 8000 München | ARRANGEMENT FOR SHORT-CIRCUIT OVERLOAD MONITORING OF ELECTRONIC PROXIMITY SWITCHES |
-
1971
- 1971-10-01 DE DE19712149063 patent/DE2149063B2/en not_active Ceased
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2515655A1 (en) * | 1975-04-10 | 1976-10-21 | Walter Dipl Ing Dr In Klaschka | Protection cct. prevents damage from reversed supply poles - using two diodes in pos. and neg. lines and third coupled to signal line |
DE2545919A1 (en) * | 1975-10-14 | 1977-04-21 | Merten Kg Pulsotronic | Two pole electronic AC voltage switchgear - has monitoring and current dependent resistors for short circuit voltage drop |
DE3302864C1 (en) * | 1983-01-28 | 1983-11-03 | Euchner & Co, 7022 Leinfelden-Echterdingen | Circuit arrangement for protecting a contactlessly controllable semiconductor switch |
EP0166125A1 (en) * | 1984-05-30 | 1986-01-02 | i f m electronic gmbh | Electronic switching device, preferably operating without making contact |
Also Published As
Publication number | Publication date |
---|---|
DE2149063A1 (en) | 1973-04-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OI | Miscellaneous see part 1 | ||
8235 | Patent refused |