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 (forum.php)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
NL54228C true NL54228C (forum.php)

Family

ID=7994082

Family Applications (1)

Application Number Title Priority Date Filing Date
NL54228D NL54228C (forum.php) 1937-10-09

Country Status (2)

Country Link
US (1) US2297543A (forum.php)
NL (1) NL54228C (forum.php)

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
BE472252A (forum.php) * 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 (forum.php) * 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
US3007112A (en) * 1958-10-24 1961-10-31 Electronic Instr Ltd Electrical indicating or measuring instruments
US3064193A (en) * 1958-10-24 1962-11-13 Standard Oil Co Digitizing amplifier
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

Similar Documents

Publication Publication Date Title
AT151505B (forum.php)
BE420085R (forum.php)
BE420409A (forum.php)
BE422006A (forum.php)
BE419835A (forum.php)
BE419812A (forum.php)
BE419783A (forum.php)
BE419666A (forum.php)
BE419588A (forum.php)
BE419523A (forum.php)
BE419443A (forum.php)
BE419342A (forum.php)
BE418783A (forum.php)
BE417582A (forum.php)
BE417149A (forum.php)
NL55511C (forum.php)
NL54042C (forum.php)
BE413076A (forum.php)
NL51935C (forum.php)
NL49994C (forum.php)
BE446480A (forum.php)
BE431914A (forum.php)
BE431868A (forum.php)
BE431360A (forum.php)
BE429964A (forum.php)