BE719137A - - Google Patents
Info
- Publication number
- BE719137A BE719137A BE719137DA BE719137A BE 719137 A BE719137 A BE 719137A BE 719137D A BE719137D A BE 719137DA BE 719137 A BE719137 A BE 719137A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
- H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
- H03G3/3015—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable using diodes or transistors
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- 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
- G01R19/02—Measuring effective values, i.e. root-mean-square values
- G01R19/03—Measuring effective values, i.e. root-mean-square values using thermoconverters
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- 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
- G01R19/22—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of AC into DC
- G01R19/225—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of AC into DC by means of thermocouples or other heat sensitive elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T3/00—Measuring neutron radiation
Landscapes
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- Multimedia (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Amplifiers (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Control Of Amplification And Gain Control (AREA)
- Measurement Of Current Or Voltage (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB36472/67A GB1241418A (en) | 1967-08-08 | 1967-08-08 | Improvements in or relating to apparatus for measuring the value of an alternating electrical signal of any waveform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE719137A true BE719137A (de) | 1969-02-06 |
Family
ID=10388468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE719137D BE719137A (de) | 1967-08-08 | 1968-08-06 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3683275A (de) |
| BE (1) | BE719137A (de) |
| CH (1) | CH503280A (de) |
| DE (1) | DE1766895A1 (de) |
| FR (1) | FR1575412A (de) |
| GB (1) | GB1241418A (de) |
| SE (1) | SE349869B (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3916193A (en) * | 1973-08-31 | 1975-10-28 | Gen Atomic Co | Radiation flux measuring device |
| US4001590A (en) * | 1973-08-31 | 1977-01-04 | General Atomic Company | Radiation flux measuring device |
| US3971984A (en) * | 1974-09-04 | 1976-07-27 | B-Cubed Engineering, Inc. | Wide-range logarithmic responding translation circuit |
| US5116136A (en) * | 1989-06-01 | 1992-05-26 | Massachusetts Institute Of Technology | Temperature measurements using thermistor elements |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2366618A (en) * | 1942-05-14 | 1945-01-02 | Brown Instr Co | Measuring and control apparatus |
| US2403521A (en) * | 1943-08-20 | 1946-07-09 | Weston Electrical Instr Corp | Electronic microammeter |
| US2757281A (en) * | 1951-12-20 | 1956-07-31 | Bel Clarence J Le | Circuit with extended logarithmic characteristic |
| US3361975A (en) * | 1964-09-29 | 1968-01-02 | Air Force Usa | Circuit for logarithmically compressing a large dynamic range rf signal |
| US3502959A (en) * | 1968-01-29 | 1970-03-24 | Spectral Dynamics Corp | Electronic logarithm converter |
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1967
- 1967-08-08 GB GB36472/67A patent/GB1241418A/en not_active Expired
-
1968
- 1968-08-02 CH CH1163368A patent/CH503280A/de not_active IP Right Cessation
- 1968-08-05 US US750116A patent/US3683275A/en not_active Expired - Lifetime
- 1968-08-06 BE BE719137D patent/BE719137A/xx unknown
- 1968-08-07 SE SE10669/68A patent/SE349869B/xx unknown
- 1968-08-07 FR FR1575412D patent/FR1575412A/fr not_active Expired
- 1968-08-07 DE DE19681766895 patent/DE1766895A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR1575412A (de) | 1969-07-18 |
| CH503280A (de) | 1971-02-15 |
| US3683275A (en) | 1972-08-08 |
| SE349869B (de) | 1972-10-09 |
| GB1241418A (en) | 1971-08-04 |
| DE1766895A1 (de) | 1971-09-09 |