CH256375A - Device enabling the frequency of electrical oscillations generated by an electron tube oscillator to be modified using a control quantity. - Google Patents

Device enabling the frequency of electrical oscillations generated by an electron tube oscillator to be modified using a control quantity.

Info

Publication number
CH256375A
CH256375A CH256375DA CH256375A CH 256375 A CH256375 A CH 256375A CH 256375D A CH256375D A CH 256375DA CH 256375 A CH256375 A CH 256375A
Authority
CH
Switzerland
Prior art keywords
modified
frequency
control quantity
electron tube
device enabling
Prior art date
Application number
Other languages
French (fr)
Inventor
Gloeilampenfabrieken N Philips
Original Assignee
Philips Nv
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 Nv filed Critical Philips Nv
Publication of CH256375A publication Critical patent/CH256375A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/24—Angle modulation by means of variable impedance by means of a variable resistive element, e.g. tube
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
CH256375D 1945-02-08 1946-02-06 Device enabling the frequency of electrical oscillations generated by an electron tube oscillator to be modified using a control quantity. CH256375A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE256375X 1945-02-08

Publications (1)

Publication Number Publication Date
CH256375A true CH256375A (en) 1948-08-15

Family

ID=3866663

Family Applications (1)

Application Number Title Priority Date Filing Date
CH256375D CH256375A (en) 1945-02-08 1946-02-06 Device enabling the frequency of electrical oscillations generated by an electron tube oscillator to be modified using a control quantity.

Country Status (5)

Country Link
US (1) US2531301A (en)
BE (1) BE458146A (en)
CH (1) CH256375A (en)
FR (1) FR923304A (en)
GB (1) GB607798A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2848610A (en) * 1953-05-25 1958-08-19 Vitro Corp Of America Oscillator frequency control apparatus
US2887579A (en) * 1953-11-19 1959-05-19 Gen Precision Lab Inc Pulse repetition frequency generator and driver
US2959745A (en) * 1957-03-06 1960-11-08 Donald D Grieg Control means for transistor oscillators
US3128462A (en) * 1959-07-02 1964-04-07 Aircraft Armaments Inc Test arrangement
US3373374A (en) * 1966-06-01 1968-03-12 Gen Precision Systems Inc Self-tunable vehicle presence detector system
US4015216A (en) * 1974-07-31 1977-03-29 Hitachi, Ltd. Frequency-voltage converter and a stabilized pulse generator using it
US8284385B2 (en) 2009-11-13 2012-10-09 Lincoln Global, Inc. Welding arc apparel with UV activated images
BR112015007550A2 (en) 2012-10-05 2017-07-04 Lincoln Global Inc arc welding device with UV or thermochromically activated images

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1683012A (en) * 1928-09-04 Thomas
GB166594A (en) * 1919-09-27 1921-07-11 Sydney Brydon Improvements in wireless telegraphy, wireless telephony and the like
DE543690C (en) * 1930-04-04 1932-02-09 Telefunken Gmbh Feedback tube generator
NL136703B (en) * 1940-02-20
US2265016A (en) * 1940-02-29 1941-12-02 Sidney Y White Electrical oscillation generator
US2349885A (en) * 1941-10-25 1944-05-30 Rca Corp Oscillation generator

Also Published As

Publication number Publication date
US2531301A (en) 1950-11-21
GB607798A (en) 1948-09-06
FR923304A (en) 1947-07-03
BE458146A (en)

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