DE2539934A1 - Schaltungsanordnung zum feststellen einer stromaenderung in einem stromkreis - Google Patents
Schaltungsanordnung zum feststellen einer stromaenderung in einem stromkreisInfo
- Publication number
- DE2539934A1 DE2539934A1 DE19752539934 DE2539934A DE2539934A1 DE 2539934 A1 DE2539934 A1 DE 2539934A1 DE 19752539934 DE19752539934 DE 19752539934 DE 2539934 A DE2539934 A DE 2539934A DE 2539934 A1 DE2539934 A1 DE 2539934A1
- Authority
- DE
- Germany
- Prior art keywords
- circuit
- oscillator
- arrangement according
- circuit arrangement
- external circuit
- 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
- 230000008859 change Effects 0.000 title claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
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
- H02H3/12—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 underload or no-load
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
- G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/4802—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/486—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by photo-electric detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0256—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults injecting test signals and analyzing monitored process response, e.g. injecting the test signal while interrupting the normal operation of the monitored system; superimposing the test signal onto a control signal during normal operation of the monitored system
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2829—Testing of circuits in sensor or actuator systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Measurement Of Current Or Voltage (AREA)
- Electronic Switches (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Ac Motors In General (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US505322A US3903430A (en) | 1974-09-12 | 1974-09-12 | Low loss circuit fail detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2539934A1 true DE2539934A1 (de) | 1976-04-01 |
Family
ID=24009865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752539934 Pending DE2539934A1 (de) | 1974-09-12 | 1975-09-09 | Schaltungsanordnung zum feststellen einer stromaenderung in einem stromkreis |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3903430A (enExample) |
| JP (1) | JPS5153771A (enExample) |
| DE (1) | DE2539934A1 (enExample) |
| FR (1) | FR2284886A1 (enExample) |
| GB (1) | GB1516880A (enExample) |
| IT (1) | IT1044443B (enExample) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4023073A (en) * | 1975-12-08 | 1977-05-10 | Graco Inc. | Open circuit detector |
| US4084232A (en) * | 1977-02-24 | 1978-04-11 | Honeywell Information Systems Inc. | Power confidence system |
| US4214236A (en) * | 1978-10-02 | 1980-07-22 | The Bendix Corporation | Driver circuit for an electrical load with capability for detecting a short in the load |
| DE3446628A1 (de) * | 1984-12-20 | 1986-06-26 | Siemens AG, 1000 Berlin und 8000 München | Signalisierungsschaltung |
| US5349994A (en) * | 1990-09-28 | 1994-09-27 | Dover Corporation | Control system for filling tanks with liquids |
| TW338585U (en) * | 1997-07-15 | 1998-08-11 | Asia Vital Components Co Ltd | Improvement on a non-carbon brush DC fan |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3624629A (en) * | 1968-10-30 | 1971-11-30 | Charles A Donaldson | Warning system for warning of defective headlights, taillights and the like on motor vehicles, aircraft, marine craft and the like |
| US3790874A (en) * | 1972-07-27 | 1974-02-05 | Cleveland Machine Controls | Motor drive control system |
-
1974
- 1974-09-12 US US505322A patent/US3903430A/en not_active Expired - Lifetime
-
1975
- 1975-09-01 IT IT51146/75A patent/IT1044443B/it active
- 1975-09-05 JP JP50107165A patent/JPS5153771A/ja active Pending
- 1975-09-09 DE DE19752539934 patent/DE2539934A1/de active Pending
- 1975-09-11 FR FR7527879A patent/FR2284886A1/fr active Granted
- 1975-09-11 GB GB37369/75A patent/GB1516880A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1516880A (en) | 1978-07-05 |
| FR2284886B3 (enExample) | 1979-06-29 |
| JPS5153771A (enExample) | 1976-05-12 |
| FR2284886A1 (fr) | 1976-04-09 |
| IT1044443B (it) | 1980-03-20 |
| US3903430A (en) | 1975-09-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHN | Withdrawal |