GB1498307A - Current transformer circuit - Google Patents
Current transformer circuitInfo
- Publication number
- GB1498307A GB1498307A GB1508476A GB1508476A GB1498307A GB 1498307 A GB1498307 A GB 1498307A GB 1508476 A GB1508476 A GB 1508476A GB 1508476 A GB1508476 A GB 1508476A GB 1498307 A GB1498307 A GB 1498307A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistors
- parallel
- base
- current transformer
- april
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
- G05F3/02—Regulating voltage or current
- G05F3/08—Regulating voltage or current wherein the variable is dc
- G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
- G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
- G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
- G05F3/26—Current mirrors
- G05F3/265—Current mirrors using bipolar transistors only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/34—DC amplifiers in which all stages are DC-coupled
- H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Control Of Electrical Variables (AREA)
- Analogue/Digital Conversion (AREA)
- Amplifiers (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
1498307 Amplifiers ITT INDUSTRIES Inc 13 April 1976 [18 April 1975] 15084/76 Heading H3T In a current transformer of the type in which the base emitter junctions of input and output transistors T 1 , T 2 are connected in parallel, the collectorbase connection of the input transistor T 1 includes two further transistors T 3 , T 4 having their baseemitter junctions in parallel. The arrangement minimizes the dependence of the overall circuit gain on the current gain of the individual transistors without producing a high input resistance. The circuit may be constructed of lateral PNP transistors in which case, transistors T 1 , T 2 and T 3 , T 4 are preferably combined as double-collector transistors, Fig. 4 (not shown). If greater precision is required, the direct connection between the collector and base of T 3 may be replaced by a further pair of transistors with parallel connected base-emitter junctions.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752517174 DE2517174C3 (en) | 1975-04-18 | Current translator circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1498307A true GB1498307A (en) | 1978-01-18 |
Family
ID=5944356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1508476A Expired GB1498307A (en) | 1975-04-18 | 1976-04-13 | Current transformer circuit |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS51129651A (en) |
| BR (1) | BR7602390A (en) |
| FR (1) | FR2308139A1 (en) |
| GB (1) | GB1498307A (en) |
| IT (1) | IT1059095B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4380740A (en) * | 1980-10-31 | 1983-04-19 | Rca Corporation | Current amplifier |
-
1976
- 1976-04-13 GB GB1508476A patent/GB1498307A/en not_active Expired
- 1976-04-14 IT IT2230576A patent/IT1059095B/en active
- 1976-04-16 JP JP51042633A patent/JPS51129651A/en active Pending
- 1976-04-16 FR FR7611328A patent/FR2308139A1/en active Granted
- 1976-04-19 BR BR7602390A patent/BR7602390A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2308139B3 (en) | 1979-01-12 |
| DE2517174A1 (en) | 1976-10-21 |
| IT1059095B (en) | 1982-05-31 |
| DE2517174B2 (en) | 1977-02-03 |
| BR7602390A (en) | 1976-10-12 |
| JPS51129651A (en) | 1976-11-11 |
| FR2308139A1 (en) | 1976-11-12 |
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