NL54228C - - Google Patents

Info

Publication number
NL54228C
NL54228C NL54228DA NL54228C NL 54228 C NL54228 C NL 54228C NL 54228D A NL54228D A NL 54228DA NL 54228 C NL54228 C NL 54228C
Authority
NL
Netherlands
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.)
Publication of NL54228C publication Critical patent/NL54228C/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/18—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/38—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers
    • H03F3/40—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Amplifiers (AREA)
NL54228D 1937-10-09 NL54228C (sk)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2297543X 1937-10-09

Publications (1)

Publication Number Publication Date
NL54228C true NL54228C (sk)

Family

ID=7994082

Family Applications (1)

Application Number Title Priority Date Filing Date
NL54228D NL54228C (sk) 1937-10-09

Country Status (2)

Country Link
US (1) US2297543A (sk)
NL (1) NL54228C (sk)

Families Citing this family (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2457214A (en) * 1942-07-21 1948-12-28 Schlumberger Well Surv Corp Recording device
US2417974A (en) * 1942-09-28 1947-03-25 William Miller Corp Demodulator circuit
US2439381A (en) * 1943-07-17 1948-04-13 Bell Telephone Labor Inc Computing bomb sight
US2446390A (en) * 1943-09-28 1948-08-03 Radio Patents Corp Potentiometric amplifier
US2525039A (en) * 1943-11-11 1950-10-10 Hartford Nat Bank & Trust Co Aperiodic high-frequency voltmeter
US2464708A (en) * 1944-01-05 1949-03-15 Collins Radio Co Automatic recorder
US2459730A (en) * 1944-06-30 1949-01-18 Leeds & Northrup Co Measuring system with capacttor having characteristics of an infinite capacity
US2474245A (en) * 1944-09-14 1949-06-28 Standard Telephones Cables Ltd Null measuring bridge
US2536617A (en) * 1945-02-27 1951-01-02 Barton L Weller Direct current negative feedback amplifier
US2459177A (en) * 1945-03-05 1949-01-18 Francis L Moseley Direct-current amplifier
US2459104A (en) * 1945-06-08 1949-01-11 Weston Electrical Instr Corp Electronic measuring apparatus
US2510930A (en) * 1945-10-11 1950-06-06 Atomic Energy Commission System for measuring limited current changes
NL69054C (sk) * 1946-03-30
US2481485A (en) * 1946-05-11 1949-09-13 Honeywell Regulator Co Method and apparatus for measuring and controlling
US2490579A (en) * 1946-07-12 1949-12-06 Socony Vacuum Oil Co Inc Direct-current measuring system
US2613236A (en) * 1946-08-09 1952-10-07 Palevsky Harry Voltage measuring apparatus
US2456420A (en) * 1946-08-31 1948-12-14 Gen Electric Electronic direct-current control system
FR956050A (sk) * 1946-10-25 1950-01-23
US2570249A (en) * 1947-03-29 1951-10-09 Sperry Corp Combining and separating circuits
US2497129A (en) * 1947-05-02 1950-02-14 Perkin Elmer Corp Radiation detecting apparatus
US2562006A (en) * 1947-08-21 1951-07-24 Westinghouse Electric Corp Direct-current amplifier
US2506531A (en) * 1947-08-30 1950-05-02 Honeywell Regulator Co Electric motor control apparatus
US2567276A (en) * 1947-12-26 1951-09-11 Robert H Dicke Electric current integrating apparatus
US2510742A (en) * 1948-03-03 1950-06-06 Arthur Nosworthy T Electronic control
US2622192A (en) * 1949-01-06 1952-12-16 Leeds & Northrup Co Measuring system with grid current suppressor
US3082954A (en) * 1949-03-31 1963-03-26 Franklin F Offner Electrical temperature control system with feedback
US2684999A (en) * 1949-04-28 1954-07-27 Rca Corp Stabilized direct current amplifier
US2685000A (en) * 1949-04-29 1954-07-27 Rca Corp Stabilized direct current amplifier
US2572794A (en) * 1949-06-29 1951-10-23 Honeywell Regulator Co Ripple-free phase sensitive rectifier
US2688729A (en) * 1949-07-28 1954-09-07 Franklin F Offner Recorder amplifier
US2571915A (en) * 1949-09-09 1951-10-16 Westinghouse Electric Corp Direct-current amplifier
US2595163A (en) * 1950-08-16 1952-04-29 Bell Telephone Labor Inc Electronic voltmeter test circuit for measuring high-resistance leaks
US2685676A (en) * 1950-12-14 1954-08-03 Leeds & Northrup Co Variable-phase transfer circuit
US2958280A (en) * 1951-04-06 1960-11-01 Edward S Gilfillan Magnetic mine firing circuit
US2773946A (en) * 1951-09-27 1956-12-11 Itt Device for detecting the sense and magnitude of a d. c. source
US2919409A (en) * 1951-10-22 1959-12-29 Leeds & Northrup Co System for adjusting amplifiers
US2744969A (en) * 1952-08-04 1956-05-08 North American Aviation Inc D. c. amplifier
US2887541A (en) * 1953-01-30 1959-05-19 Bell Telephone Labor Inc Automatic gain control
US2886657A (en) * 1953-08-27 1959-05-12 Walter J Hirtreiter Amplifier control apparatus
US2806989A (en) * 1953-08-31 1957-09-17 Rca Corp Electronic synchronous converters
US3018444A (en) * 1954-04-29 1962-01-23 Franklin F Offner Transistor amplifier
US2942417A (en) * 1955-03-24 1960-06-28 United Aircraft Corp Temperature control with degenerative feedback for a fuel system
US3079565A (en) * 1956-07-12 1963-02-26 Offner Electronics Inc Electrical amplifier
US2873320A (en) * 1956-08-07 1959-02-10 Hagan Chemicals & Controls Inc Direct current amplifier
DE1093007B (de) * 1956-10-12 1960-11-17 Philips Nv Vorrichtung zum Messen von Spannungen, insbesondere sehr kleinen Spannungen
US2832848A (en) * 1957-01-16 1958-04-29 Glyn A Neff Electrical signal amplifiers
US2970266A (en) * 1957-01-22 1961-01-31 Beckman Instruments Inc Self-zeroing amplifier
US3014135A (en) * 1957-03-04 1961-12-19 Hewlett Packard Co Direct current amplifier and modulator therefor
US2953752A (en) * 1957-03-14 1960-09-20 Portronics Inc Chopper-stabilized amplifier
US3067337A (en) * 1957-06-03 1962-12-04 Cincinnati Milling Machine Co Servo amplifier using push-pull, complementary, cascaded, transistors with means to superimpose a higher a. c. frequency on information signal
US2980861A (en) * 1957-08-27 1961-04-18 Honeywell Regulator Co Switching systems
US2961614A (en) * 1957-09-30 1960-11-22 Neff Instr Corp Electrical signal amplifier
US2974288A (en) * 1957-10-09 1961-03-07 Hewlett Packard Co D.-c. amplifier and filter therefor
US3101451A (en) * 1958-10-17 1963-08-20 Honeywell Regulator Co Direct current amplifier system with feedback controlled high impedance input circuit
US3064193A (en) * 1958-10-24 1962-11-13 Standard Oil Co Digitizing amplifier
US3007112A (en) * 1958-10-24 1961-10-31 Electronic Instr Ltd Electrical indicating or measuring instruments
US3015074A (en) * 1959-01-16 1961-12-26 Systron Donner Corp Stabilized d. c. amplifier
US3086172A (en) * 1959-12-18 1963-04-16 Gen Electric Tunable filter arrangement
US3267378A (en) * 1962-03-26 1966-08-16 Beckman Instruments Inc A. c. measuring circuit having an amplifier with feedback path in which a synchronous switch output drives a d. c. meter
US3424981A (en) * 1964-11-12 1969-01-28 Keithley Instruments Low level d.c. voltage apparatus employing a balanced modulator and filter means to remove spurious signals
US3320559A (en) * 1965-05-17 1967-05-16 Electro Scient Ind Inc Electrical chopper utilizing a shielded reed switch
FR2400208A1 (fr) * 1977-08-11 1979-03-09 Thebault Raymond Appareil de mesure de resistance en fonction de la frequence et de l'amplitude du courant

Also Published As

Publication number Publication date
US2297543A (en) 1942-09-29

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