GB771083A - Improvements in or relating to electronic differential amplifiers - Google Patents

Improvements in or relating to electronic differential amplifiers

Info

Publication number
GB771083A
GB771083A GB2209/55A GB220955A GB771083A GB 771083 A GB771083 A GB 771083A GB 2209/55 A GB2209/55 A GB 2209/55A GB 220955 A GB220955 A GB 220955A GB 771083 A GB771083 A GB 771083A
Authority
GB
United Kingdom
Prior art keywords
valves
resistor
grids
cathode impedance
valve
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
GB2209/55A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB771083A publication Critical patent/GB771083A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F5/00—Amplifiers with both discharge tubes and semiconductor devices as amplifying elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor
    • H03F3/28—Push-pull amplifiers; Phase-splitters therefor with tubes 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
    • H03F3/36—Dc amplifiers in which all stages are dc-coupled with tubes only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/42—Amplifiers with two or more amplifying elements having their dc paths in series with the load, the control electrode of each element being excited by at least part of the input signal, e.g. so-called totem-pole amplifiers
    • H03F3/44—Amplifiers with two or more amplifying elements having their dc paths in series with the load, the control electrode of each element being excited by at least part of the input signal, e.g. so-called totem-pole amplifiers with tubes only

Abstract

771,083. Valve amplifying circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Jan. 25, 1955 [Jan. 25, 1954], No. 2209/55. Class 40(6) In a push-pull amplifier of the type comprising a pair of valves with a common cathode impedance, discrimination against in-phase voltages is increased by replacing each valve by two or more in cascade connection. The signals are applied to the grids of the lower valves 5, 6 respectively, the anodes of which are directly connected to the cathodes of the upper valves 12, 13, respectively. The valves 12, 13 have load resistors 9, 10 across which the output is obtained. The common cathode impedance comprises a further pair of valves 16, 17, in cascade connection, having a cathode resistor 11 and with the grids held at fixed potentials by means of potentiometer 18, 19, 20. In a simplified modification, Fig. 2 (not shown), the common cathode impedance comprises a resistor. The grids of the valves 12, 13 are held at a fixed potential relative to that of the cathodes of the valves 5, 6 by means of a gas-discharge tube 14 which is fed through a resistor 15. This resistor may be replaced by a valve system such as that 16, 17 comprising the cathode impedance.
GB2209/55A 1953-08-24 1955-01-25 Improvements in or relating to electronic differential amplifiers Expired GB771083A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL761298X 1953-08-24
NL329089X 1954-01-25

Publications (1)

Publication Number Publication Date
GB771083A true GB771083A (en) 1957-03-27

Family

ID=31980706

Family Applications (3)

Application Number Title Priority Date Filing Date
GB24297/54A Expired GB761298A (en) 1953-08-24 1954-08-20 Improvements in or relating to circuit-arrangements for amplifying electric signals
GB24298/54A Expired GB767997A (en) 1953-08-24 1954-08-20 Improvements in or relating to differential electronic amplifiers
GB2209/55A Expired GB771083A (en) 1953-08-24 1955-01-25 Improvements in or relating to electronic differential amplifiers

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB24297/54A Expired GB761298A (en) 1953-08-24 1954-08-20 Improvements in or relating to circuit-arrangements for amplifying electric signals
GB24298/54A Expired GB767997A (en) 1953-08-24 1954-08-20 Improvements in or relating to differential electronic amplifiers

Country Status (6)

Country Link
US (1) US2780682A (en)
BE (2) BE531370A (en)
CH (2) CH331260A (en)
DE (3) DE971705C (en)
FR (3) FR1112775A (en)
GB (3) GB761298A (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946016A (en) * 1954-10-26 1960-07-19 Lab For Electronics Inc All-pass network amplifier
GB839975A (en) * 1955-07-28 1960-06-29 Telephone Mfg Co Ltd Improvements in and relating to signal switched telecommunication circuits
US3085209A (en) * 1956-04-05 1963-04-09 Carlson Arthur William Wide-band differential amplification
US3111643A (en) * 1956-05-21 1963-11-19 Gilfillan Bros Inc Air traffic schedule monitoring method and system
DE1168974B (en) * 1956-07-03 1964-04-30 Telefunken Patent Transistor stage in emitter circuit with measures to compensate for the influence of operating voltage and temperature changes
US2909622A (en) * 1956-08-20 1959-10-20 Cons Electrodynamics Corp Direct current differential amplifying system
US2933693A (en) * 1957-05-03 1960-04-19 Lyle R Battersby Sensitivity control circuit
US2896031A (en) * 1957-10-15 1959-07-21 Epsco Inc Differential amplifier
US3125755A (en) * 1957-12-09 1964-03-17 Local
US3042876A (en) * 1958-01-30 1962-07-03 Statham Instrument Inc Differential transistorized amplifier
US3046487A (en) * 1958-03-21 1962-07-24 Texas Instruments Inc Differential transistor amplifier
US3024361A (en) * 1958-04-18 1962-03-06 Philips Corp Tuning and overload indicator circuit
US2941155A (en) * 1958-06-02 1960-06-14 Epsco Inc Differential amplifier
DE1120584B (en) * 1958-06-14 1961-12-28 Siemens Ag Arrangement for generating over long periods of highly stable control currents for Hall sensors
US3168709A (en) * 1960-12-14 1965-02-02 Honeywell Inc Stabilized transistor difference amplifier
NL122956C (en) * 1961-04-28
US3275944A (en) * 1963-11-26 1966-09-27 Bendix Corp High voltage d.c. coupled differential amplifier including series energized transistors
US3482177A (en) * 1966-10-03 1969-12-02 Gen Electric Transistor differential operational amplifier
US3541465A (en) * 1966-12-28 1970-11-17 Hitachi Ltd Transistor differential amplifier circuit
US3568081A (en) * 1968-09-09 1971-03-02 Honeywell Inc Differential amplifier with predetermined deadband
US3725807A (en) * 1970-08-31 1973-04-03 Westinghouse Electric Corp Direct current amplifier

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2358428A (en) * 1940-09-07 1944-09-19 Emi Ltd Thermionic valve amplifier circuit arrangement
US2329073A (en) * 1943-01-01 1943-09-07 Rca Corp Thermionic tube circuit
GB579685A (en) * 1944-04-24 1946-08-13 Hugh Lyon Mansford Improvements in or relating to thermionic amplifiers
US2624778A (en) * 1945-10-25 1953-01-06 Gilbert J Perlow Electronic fluxmeter and alternating current amplifier
FR963498A (en) * 1947-05-23 1950-07-11
US2594530A (en) * 1948-10-02 1952-04-29 Bell Telephone Labor Inc Amplifying system
US2592193A (en) * 1949-03-03 1952-04-08 Us Sec War Means for reducing amplitude distortion in cathode-follower amplifiers
US2631198A (en) * 1950-03-11 1953-03-10 Cons Electric Company Direct current amplifier
DE848207C (en) * 1951-02-03 1952-09-01 Fritz Schwarzer Push-pull reverse circuit for amplifier
DE853297C (en) * 1951-05-03 1952-10-23 Fritz Schwarzer Cascade amplifier in direct current coupling

Also Published As

Publication number Publication date
BE535111A (en) 1958-12-05
GB767997A (en) 1957-02-13
DE1023487B (en) 1958-01-30
US2780682A (en) 1957-02-05
FR1106637A (en) 1955-12-21
BE531370A (en) 1957-11-22
DE971705C (en) 1959-03-19
CH329089A (en) 1958-04-15
FR1112775A (en) 1956-03-19
GB761298A (en) 1956-11-14
FR1118236A (en) 1956-06-01
DE964331C (en) 1957-05-23
CH331260A (en) 1958-07-15

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