GB1266886A - - Google Patents

Info

Publication number
GB1266886A
GB1266886A GB4691268A GB1266886DA GB1266886A GB 1266886 A GB1266886 A GB 1266886A GB 4691268 A GB4691268 A GB 4691268A GB 1266886D A GB1266886D A GB 1266886DA GB 1266886 A GB1266886 A GB 1266886A
Authority
GB
United Kingdom
Prior art keywords
transistor
collector
resistor
emitter
load
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
Application number
GB4691268A
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1266886A publication Critical patent/GB1266886A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00Analogue/digital conversion; Digital/analogue conversion
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10Regulating voltage or current
    • G05F1/46Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/561Voltage to current converters
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0614Continuously compensating for, or preventing, undesired influence of physical parameters of harmonic distortion

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Theoretical Computer Science (AREA)
  • Amplifiers (AREA)

Abstract

1,266,886. Transistor amplifying circuits. MICRO CONSULTANTS Ltd. 20 Oct., 1969 [3 Oct., 1968], No. 46912/68. Heading H3T. [Also in Division G3] An arrangement used as a constant current device comprises a transistor TR1, Fig. 1, with its collector connected to a load circuit and its emitter to a resistor R1, its base being connected to the output 4 of a differential amplifier 1. Negative feedback is provided between resistor R1 and the out-of-phase input 2 of the differential amplifier 1, the in-phase input 3 of which is connected to an input source V 1 . In a modification, transistor TR5, Fig. 2, is similarly connected, but a resistor R6 is interposed between its collector and the load: a further transistor TR6 is provided with its base and collector respectively connected to the collector and emitter of transistor TR5 and its emitter connected to the load. The Specification also discloses a modification of the arrangement of Fig. 1, in which a plurality of further transistors are provided with their bases connected to the base of transistor TR1, each having its own emitter circuit resistor and the collector feeding a constant current to a further load (Fig. 3, not shown). A corresponding modification of the arrangement of Fig. 2 is also disclosed (Fig. 4, not shown).
GB4691268A 1968-10-03 1968-10-03 Expired GB1266886A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4691268 1968-10-03

Publications (1)

Publication Number Publication Date
GB1266886A true GB1266886A (en) 1972-03-15

Family

ID=10443040

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4691268A Expired GB1266886A (en) 1968-10-03 1968-10-03

Country Status (1)

Country Link
GB (1) GB1266886A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2312879A1 (en) * 1975-05-27 1976-12-24 Ibm ZERO OFFSET CURRENT DARLINGTON HIGH FREQUENCY DIFFERENTIAL AMPLIFIER
FR2346766A1 (en) * 1976-03-31 1977-10-28 Philips Nv CURRENT STABILIZATION CIRCUIT
FR2387474A1 (en) * 1977-04-14 1978-11-10 Bosch Gmbh Robert CONTINUOUS VOLTAGE REGULATOR
DE2824092A1 (en) * 1977-06-13 1978-12-21 Hermsdorf Keramik Veb CIRCUIT WITH A VARIETY OF ELECTRIC GENERATORS ARRANGED NEXT TO EACH OTHER
DE2914108A1 (en) * 1979-04-07 1980-10-09 Itt Ind Gmbh Deutsche MONOLITHICALLY INTEGRATED CIRCUIT ARRANGEMENT FOR A DIGITAL-ANALOG CONVERTER
GB2135846A (en) * 1983-02-04 1984-09-05 Standard Telephones Cables Ltd Current splitter
EP0281116A2 (en) * 1987-03-04 1988-09-07 Kabushiki Kaisha Toshiba Digital-to-analog converter
EP0331172A2 (en) * 1988-03-03 1989-09-06 Brooktree Corporation Reference generator
GB2239754A (en) * 1990-01-05 1991-07-10 Hewlett Packard Co Current mirrors using resistor ratios in cmos circuit
EP0447833A2 (en) * 1990-03-19 1991-09-25 TriQuint Semiconductor, Inc. Low noise dac current source topology
EP0466145A2 (en) * 1990-07-11 1992-01-15 Sony Corporation D/A converter

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2312879A1 (en) * 1975-05-27 1976-12-24 Ibm ZERO OFFSET CURRENT DARLINGTON HIGH FREQUENCY DIFFERENTIAL AMPLIFIER
FR2346766A1 (en) * 1976-03-31 1977-10-28 Philips Nv CURRENT STABILIZATION CIRCUIT
US4117391A (en) * 1976-03-31 1978-09-26 U.S. Philips Corporation Current stabilizing circuit
FR2387474A1 (en) * 1977-04-14 1978-11-10 Bosch Gmbh Robert CONTINUOUS VOLTAGE REGULATOR
DE2824092A1 (en) * 1977-06-13 1978-12-21 Hermsdorf Keramik Veb CIRCUIT WITH A VARIETY OF ELECTRIC GENERATORS ARRANGED NEXT TO EACH OTHER
DE2914108A1 (en) * 1979-04-07 1980-10-09 Itt Ind Gmbh Deutsche MONOLITHICALLY INTEGRATED CIRCUIT ARRANGEMENT FOR A DIGITAL-ANALOG CONVERTER
GB2135846A (en) * 1983-02-04 1984-09-05 Standard Telephones Cables Ltd Current splitter
EP0281116A3 (en) * 1987-03-04 1991-07-03 Kabushiki Kaisha Toshiba Digital-to-analog converter
EP0281116A2 (en) * 1987-03-04 1988-09-07 Kabushiki Kaisha Toshiba Digital-to-analog converter
EP0331172A2 (en) * 1988-03-03 1989-09-06 Brooktree Corporation Reference generator
EP0331172A3 (en) * 1988-03-03 1992-03-18 Brooktree Corporation Reference generator
GB2239754A (en) * 1990-01-05 1991-07-10 Hewlett Packard Co Current mirrors using resistor ratios in cmos circuit
GB2239754B (en) * 1990-01-05 1994-10-26 Hewlett Packard Co Current mirror using resistor ratios in CMOS process
EP0447833A2 (en) * 1990-03-19 1991-09-25 TriQuint Semiconductor, Inc. Low noise dac current source topology
EP0447833A3 (en) * 1990-03-19 1993-07-21 Triquint Semiconductor, Inc. Low noise dac current source topology
EP0466145A2 (en) * 1990-07-11 1992-01-15 Sony Corporation D/A converter
EP0466145A3 (en) * 1990-07-11 1993-07-14 Sony Corporation D/a converter

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee