GB1252633A - - Google Patents

Info

Publication number
GB1252633A
GB1252633A GB1252633DA GB1252633A GB 1252633 A GB1252633 A GB 1252633A GB 1252633D A GB1252633D A GB 1252633DA GB 1252633 A GB1252633 A GB 1252633A
Authority
GB
United Kingdom
Prior art keywords
voltage
resistors
diode
amplifiers
march
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
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 GB1252633A publication Critical patent/GB1252633A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic 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
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating 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
    • G05F1/565—Regulating 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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
    • G05F1/567—Regulating 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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for temperature compensation

Abstract

1,252,633. Automatic voltage regulation. INTERNATIONAL STANDARD ELECTRIC CORP. March 12, 1969 [March 19, 1968], No. 13028/69. Heading G3X. A D. C. voltage reference source having a low output impedance and a stabilized output VO over a predetermined temperature range comprises an inverting operational amplifier P1 with a Zener diode in its feedback path and an inverting operational amplifier P2 whose associated resistors R3, R4 are chosen to provide substantially unity gain, the amplifiers P1, P2 forming a closed loop in which the output voltage VO depends only on the voltage eZ of the Zoner diode and may be varied by adjusting the closed loop gains of the amplifiers. To obtain stability over a predetermined temperature range, the resistor R1 is adjusted to bring the current through the Zener diode to a desired value corresponding to a required temperature co-efficient of the diode. The voltage VO is then adjusted to its desired value by varying the resistors R3, R4. Adjustment of resistors Rl, R3, R4 then-continues until, by successive approximations, the desired temperature-independent voltage VO is obtained. The theoretical basis of the circuit is discussed Figs. 1 to 4 (not shown) and typical values of the circuit parameters given.
GB1252633D 1968-03-19 1969-03-12 Expired GB1252633A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR144368 1968-03-19

Publications (1)

Publication Number Publication Date
GB1252633A true GB1252633A (en) 1971-11-10

Family

ID=8647680

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1252633D Expired GB1252633A (en) 1968-03-19 1969-03-12

Country Status (3)

Country Link
DE (1) DE1913148A1 (en)
FR (1) FR1569767A (en)
GB (1) GB1252633A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016160439A1 (en) * 2015-04-01 2016-10-06 Cooper Technologies Company Virtual ground sensing circuit for high impedance voltage sensors
CN113253604A (en) * 2021-05-19 2021-08-13 厦门市必易微电子技术有限公司 Loop gain compensation control circuit and method, and drive control system and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016160439A1 (en) * 2015-04-01 2016-10-06 Cooper Technologies Company Virtual ground sensing circuit for high impedance voltage sensors
US10132842B2 (en) 2015-04-01 2018-11-20 Eaton Intelligent Power Limited Virtual ground sensing circuit for high impedance voltage sensors
CN113253604A (en) * 2021-05-19 2021-08-13 厦门市必易微电子技术有限公司 Loop gain compensation control circuit and method, and drive control system and method

Also Published As

Publication number Publication date
DE1913148A1 (en) 1969-10-02
FR1569767A (en) 1969-06-06

Similar Documents

Publication Publication Date Title
GB1364233A (en) High performance solid state amplifier
GB1252633A (en)
GB1528000A (en) Constant voltage generating circuit
GB1289485A (en)
JPS6473168A (en) Ignition control circuit
ES372211A1 (en) Wide-band amplifier
GB786854A (en) Improvements relating to transistor amplifiers
GB1215582A (en) Improvements in or relating to transistor amplifiers
GB1506881A (en) Current divider
GB1203742A (en) Transistor regulated constant-voltage d.c. source
GB1537484A (en) Transistor amplifier with over-current prevention circuitry
GB1298395A (en) Voltage stabilising arrangement
JPS5287346A (en) Amplifying circuit
JPS5226145A (en) Automatic gain adjustment circuit
GB873564A (en) Circuit with transistors for wide-band amplification
GB1248668A (en) D.c. voltage regulator
GB1130060A (en) Improvements in and relating to electric amplifiers
JPS5635514A (en) Gain control amplifier
US4001727A (en) Power control circuit for a power oscillator
GB1125753A (en) Improvements in or relating to gain and attenuation control circuit arrangements
GB1528068A (en) Low frequency power amplifier
GB940672A (en) Improvements in transistor circuits
ES344370A1 (en) Negative feedback amplifier having adjustable gain
GB951720A (en) High input impedance transistor amplifier
JPS57208713A (en) Bias controlling circuit

Legal Events

Date Code Title Description
PS Patent sealed