GB1472988A - Constant current source temperature compensation network - Google Patents

Constant current source temperature compensation network

Info

Publication number
GB1472988A
GB1472988A GB3158574A GB3158574A GB1472988A GB 1472988 A GB1472988 A GB 1472988A GB 3158574 A GB3158574 A GB 3158574A GB 3158574 A GB3158574 A GB 3158574A GB 1472988 A GB1472988 A GB 1472988A
Authority
GB
United Kingdom
Prior art keywords
transistor
resistor
current
source
constant current
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
GB3158574A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RCA Corp
Original Assignee
RCA Corp
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
Priority to US38527173 priority Critical patent/US3886435A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of GB1472988A publication Critical patent/GB1472988A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00Non-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
    • G05F3/02Regulating voltage or current
    • G05F3/08Regulating voltage or current wherein the variable is dc
    • G05F3/10Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/26Current mirrors
    • G05F3/265Current mirrors using bipolar transistors only
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S323/00Electricity: power supply or regulation systems
    • Y10S323/901Starting circuits
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S323/00Electricity: power supply or regulation systems
    • Y10S323/907Temperature compensation of semiconductor

Abstract

1472988 Automatic current regulation RCA CORPORATION 17 July 1974 [3 Aug 1973] 31585/74 HeadingG3X A temperature-compensated constant current circuit includes a voltage source in the form of a conductive semi-conductor P-N junction, a resistor connected across the source, and a series combination of a resistor and a P-N junction also connected across the source. As shown in Fig. 2, transistors 22, 24 are supplied from a source B+, and the base and emitter of transistor 22 form a voltage source supplying current to a fixed resistor 29 and a resistor 35 connected in series with a diode-connected transistor 25. The values of the resistors are chosen so that, when the ambient temperature rises, the decrease in current in resistor 29 due to falling base-emitter voltage of transistor 22 is compensated by increased current in resistor 35 due to a smaller potential drop across transistor 25, producing substantially constant current flow in the main current paths of both transistors 22, 24. The regulator circuit is connected to the source B+ by way of a starting transistor 50 and a current repeater circuit in the form of an amplifier 10, 11, 12, 14, 15, 21, 23 receiving an input signal at point D and producing a proportional output current at point A, the ratio of output to input depending on the number of parallel diode-resistor paths 10, 14 and 11, 15 used. Loads requiring constant current may be connected in any of paths A-A', C-C', D-D' or between terminal G and a reference potential. In a modification, Fig. 3 (not shown), the effect of the collector-emitter output impedance of transistor 25 is reduced by connecting a further transistor (30) between point D' and the collector of transistor 25, in cascade with transistor 24.
GB3158574A 1973-08-03 1974-07-17 Constant current source temperature compensation network Expired GB1472988A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US38527173 US3886435A (en) 1973-08-03 1973-08-03 V' be 'voltage voltage source temperature compensation network

Publications (1)

Publication Number Publication Date
GB1472988A true GB1472988A (en) 1977-05-11

Family

ID=23520720

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3158574A Expired GB1472988A (en) 1973-08-03 1974-07-17 Constant current source temperature compensation network

Country Status (10)

Country Link
US (1) US3886435A (en)
JP (1) JPS5310257B2 (en)
KR (1) KR790001971B1 (en)
CA (1) CA1034200A (en)
DE (1) DE2437427C3 (en)
FR (1) FR2239719B1 (en)
GB (1) GB1472988A (en)
IT (1) IT1014836B (en)
NL (1) NL7410073A (en)
SE (1) SE398928B (en)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5527686B2 (en) * 1975-08-12 1980-07-22
US4123698A (en) * 1976-07-06 1978-10-31 Analog Devices, Incorporated Integrated circuit two terminal temperature transducer
US4079308A (en) * 1977-01-31 1978-03-14 Advanced Micro Devices, Inc. Resistor ratio circuit construction
NL7803607A (en) * 1978-04-05 1979-10-09 Philips Nv A voltage reference.
JPS6029123B2 (en) * 1978-08-02 1985-07-09 Fujitsu Ltd
US4292583A (en) * 1980-01-31 1981-09-29 Signetics Corporation Voltage and temperature stabilized constant current source circuit
JPH0123802B2 (en) * 1980-04-18 1989-05-09 Fujitsu Ltd
US4325017A (en) * 1980-08-14 1982-04-13 Rca Corporation Temperature-correction network for extrapolated band-gap voltage reference circuit
US4325018A (en) * 1980-08-14 1982-04-13 Rca Corporation Temperature-correction network with multiple corrections as for extrapolated band-gap voltage reference circuits
US4350904A (en) * 1980-09-22 1982-09-21 Bell Telephone Laboratories, Incorporated Current source with modified temperature coefficient
US4348633A (en) * 1981-06-22 1982-09-07 Motorola, Inc. Bandgap voltage regulator having low output impedance and wide bandwidth
DE3137504A1 (en) * 1981-09-21 1983-04-07 Siemens Ag Circuit arrangement for generating a temperature-independent reference voltage
US4450367A (en) * 1981-12-14 1984-05-22 Motorola, Inc. Delta VBE bias current reference circuit
US4491780A (en) * 1983-08-15 1985-01-01 Motorola, Inc. Temperature compensated voltage reference circuit
JP2525346B2 (en) * 1983-10-27 1996-08-21 富士通株式会社 Differential amplifier circuit having constant current source circuit
NL193545C (en) * 1983-12-29 2000-01-04 Mitsubishi Electric Corp Constant current generating circuit.
NL8400636A (en) * 1984-02-29 1985-09-16 Philips Nv Power source switch.
US4590418A (en) * 1984-11-05 1986-05-20 General Motors Corporation Circuit for generating a temperature stabilized reference voltage
US4879505A (en) * 1986-12-23 1989-11-07 Analog Devices, Inc. Temperature and power supply compensation circuit for integrated circuits
US4786856A (en) * 1987-03-12 1988-11-22 Tektronix, Inc. Temperature compensated current source
US4786855A (en) * 1988-02-04 1988-11-22 Linear Technology Inc. Regulator for current source transistor bias voltage
DE3811950C2 (en) * 1988-04-11 1991-08-01 Telefunken Electronic Gmbh, 7100 Heilbronn, De
US4883992A (en) * 1988-09-06 1989-11-28 Delco Electronics Corporation Temperature compensated voltage generator
US4857823A (en) * 1988-09-22 1989-08-15 Ncr Corporation Bandgap voltage reference including a process and temperature insensitive start-up circuit and power-down capability
US4866399A (en) * 1988-10-24 1989-09-12 Delco Electronics Corporation Noise immune current mirror
US4853610A (en) * 1988-12-05 1989-08-01 Harris Semiconductor Patents, Inc. Precision temperature-stable current sources/sinks
FR2667703A1 (en) * 1990-10-05 1992-04-10 Philips Composants Source of current with report between current output and input.
AT214806T (en) * 1995-02-17 2002-04-15 Siemens Metering Ag Arrangement for temperature compensation
US20090283518A1 (en) * 2005-01-18 2009-11-19 Matsushita Electric Industrial Co., Ltd. High frequency heating apparatus
DE102008018236A1 (en) * 2008-04-10 2009-10-15 Osram Gesellschaft mit beschränkter Haftung Thermal variation equalization and/or partial compensation circuit, has current source connected with temperature compensation unit for compensating thermal variations of source, where unit has diode with negative temperature coefficient

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1513319B2 (en) * 1965-10-04 1971-08-19 voltages less than or equal circuitry for stabilizing
US3383612A (en) * 1965-11-29 1968-05-14 Rca Corp Integrated circuit biasing arrangements
US3573504A (en) * 1968-01-16 1971-04-06 Trw Inc Temperature compensated current source
US3588672A (en) * 1968-02-08 1971-06-28 Tektronix Inc Current regulator controlled by voltage across semiconductor junction device
US3619659A (en) * 1969-12-02 1971-11-09 Honeywell Inf Systems Integrator amplifier circuit with voltage regulation and temperature compensation
US3617859A (en) * 1970-03-23 1971-11-02 Nat Semiconductor Corp Electrical regulator apparatus including a zero temperature coefficient voltage reference circuit
US3648153A (en) * 1970-11-04 1972-03-07 Rca Corp Reference voltage source
US3683270A (en) * 1971-02-22 1972-08-08 Signetics Corp Integrated circuit bilateral current source
DE2147406A1 (en) * 1971-09-22 1973-04-05 Flottweg Werk Bruckmayer Screw for a solid-bowl screw centrifuge
JPS4854460A (en) * 1971-11-11 1973-07-31
US3794861A (en) * 1972-01-28 1974-02-26 Advanced Memory Syst Inc Reference voltage generator circuit
US3753079A (en) * 1972-03-08 1973-08-14 T Trilling Foldback current limiter
US3777251A (en) * 1972-10-03 1973-12-04 Motorola Inc Constant current regulating circuit
US3825778A (en) * 1973-02-09 1974-07-23 Rca Corp Temperature-sensitive control circuit

Also Published As

Publication number Publication date
SE7409647L (en) 1975-02-04
NL7410073A (en) 1975-02-05
SE398928B (en) 1978-01-23
CA1034200A1 (en)
KR790001971B1 (en) 1979-12-30
AU7185374A (en) 1976-02-05
US3886435A (en) 1975-05-27
FR2239719A1 (en) 1975-02-28
DE2437427A1 (en) 1975-02-20
IT1014836B (en) 1977-04-30
FR2239719B1 (en) 1978-02-17
JPS5310257B2 (en) 1978-04-12
DE2437427C3 (en) 1981-03-26
CA1034200A (en) 1978-07-04
DE2437427B2 (en) 1980-08-14
JPS5044454A (en) 1975-04-21

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Legal Events

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