GB1026545A - Improvements in or relating to amplifiers - Google Patents

Improvements in or relating to amplifiers

Info

Publication number
GB1026545A
GB1026545A GB3900562A GB3900562A GB1026545A GB 1026545 A GB1026545 A GB 1026545A GB 3900562 A GB3900562 A GB 3900562A GB 3900562 A GB3900562 A GB 3900562A GB 1026545 A GB1026545 A GB 1026545A
Authority
GB
United Kingdom
Prior art keywords
resistors
input signal
input
transistor
output
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
GB3900562A
Inventor
Daniel Julius Sikorra
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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 by Honeywell Inc filed Critical Honeywell Inc
Priority to GB3900562A priority Critical patent/GB1026545A/en
Publication of GB1026545A publication Critical patent/GB1026545A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/18—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/4508—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using bipolar transistors as the active amplifying circuit
    • H03F3/45085—Long tailed pairs
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45498—Indexing scheme relating to differential amplifiers the CSC comprising only resistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45601—Indexing scheme relating to differential amplifiers the IC comprising one or more passive resistors by feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45604—Indexing scheme relating to differential amplifiers the IC comprising a input shunting resistor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45652—Indexing scheme relating to differential amplifiers the LC comprising one or more further dif amp stages, either identical to the dif amp or not, in cascade
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45702—Indexing scheme relating to differential amplifiers the LC comprising two resistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45712—Indexing scheme relating to differential amplifiers the LC comprising a capacitor as shunt

Abstract

1,026,545. Transistor amplifying circuits. HONEYWELL Inc. Oct. 15, 1962, No. 39005/62. Heading H3T. [Also in Division G4] In an amplifier with feedback between input and output terminals these terminals are at the same potential in the absence of an input signal. A two-stage direct-coupled transistor amplifier comprises a pair of NPN transistors 22, 30 with the input signal applied in pushpull to their bases, which are connected to earth over resistors 26, 34 respectively. The emitters are connected via a common resistor 35 to a source of negative potential. Loads 42, 40 are provided in the respective collector circuits which are direct-coupled via leads 51, 45 respectively to the bases of a pair of PNP transistors 52, 46. A capacitor 43 connected between the collectors prevents high-frequency instability. The emitters of transistors 52, 46 are connected via a common resistor 56 to a source of positive potential, and their collectors via load resistors 60, 57 respectively to a source of negative potential. Output terminals 63, 62 are connected to the respective collectors 55, 49 and are back-coupled to give negative feedback, to the input terminals 21, 20 respectively via resistors 67, 64 respectively. The D.C. conditions are so adjusted that in the absence of an input signal no current flows in the resistors 64, 67. In addition, positive feedback is applied between the output terminal 62 and input terminal 21 via series-connected resistor 65 and capacitor 66, so that the output of the amplifier contains a first component proportional to the input signal and a second corresponding to the time derivative; the arrangement is made such that with no input the positive and negative feedback balance one another. In a modification, the negative feedback resistors 64, 67 are omitted and the resistor 65 returned to the collector of transistor 52 instead of that of transistor 46; the arrangement then gives an output containing a component proportional to the time integral, instead of the derivative, of the input signal.
GB3900562A 1962-10-15 1962-10-15 Improvements in or relating to amplifiers Expired GB1026545A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3900562A GB1026545A (en) 1962-10-15 1962-10-15 Improvements in or relating to amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3900562A GB1026545A (en) 1962-10-15 1962-10-15 Improvements in or relating to amplifiers

Publications (1)

Publication Number Publication Date
GB1026545A true GB1026545A (en) 1966-04-20

Family

ID=10407024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3900562A Expired GB1026545A (en) 1962-10-15 1962-10-15 Improvements in or relating to amplifiers

Country Status (1)

Country Link
GB (1) GB1026545A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5039856A (en) * 1973-08-10 1975-04-12
GB2187316A (en) * 1986-02-28 1987-09-03 Plessey Co Plc Improvements in or relating to integrating circuits

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5039856A (en) * 1973-08-10 1975-04-12
JPS5424630B2 (en) * 1973-08-10 1979-08-22
GB2187316A (en) * 1986-02-28 1987-09-03 Plessey Co Plc Improvements in or relating to integrating circuits
US4806880A (en) * 1986-02-28 1989-02-21 Plessey Overseas Limited High speed integrator for data recovery and a costas phase-locked-loop circuit incorporating same
GB2187316B (en) * 1986-02-28 1989-11-29 Plessey Co Plc Improvements in or relating to integrate circuits.

Similar Documents

Publication Publication Date Title
US3077566A (en) Transistor operational amplifier
US4586000A (en) Transformerless current balanced amplifier
GB1101875A (en) Amplifier
GB1453732A (en) Current mirror amplifiers
GB1529068A (en) Differential amplifier circuit
GB1367660A (en) Circuit for generating a difference current value between a pair of current mode input signals
GB1493721A (en) Current mirror
US4121169A (en) Amplifier device
GB1322516A (en) Signal translating stage
US4396891A (en) Gain control circuit
GB1364233A (en) High performance solid state amplifier
GB1286602A (en) Improvements in or relating to differential amplifiers
GB1414866A (en) Logarithmic amplifying system
GB1075436A (en) Transistor amplifier
US2881269A (en) High impedance transistor circuits
GB995879A (en) A signal amplifier
GB944413A (en) Multi-stage transistor amplifier
US3866134A (en) Power amplifier with self biasing and insensitivity to temperature variations
GB1026545A (en) Improvements in or relating to amplifiers
KR900002089B1 (en) Amplifier circuit
GB1453620A (en) Transistor amplifier
GB1059112A (en) Improvements in and relating to buffer amplifiers
GB1296750A (en)
GB1080459A (en) Differential amplifiers
GB1289705A (en)