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GB486448A - Improvements in or relating to electric oscillation generators - Google Patents

Improvements in or relating to electric oscillation generators

Info

Publication number
GB486448A
GB486448A GB3310036A GB3310036A GB486448A GB 486448 A GB486448 A GB 486448A GB 3310036 A GB3310036 A GB 3310036A GB 3310036 A GB3310036 A GB 3310036A GB 486448 A GB486448 A GB 486448A
Authority
GB
United Kingdom
Prior art keywords
frequency
sec
oscillation
variable
generator
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
GB3310036A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB3310036A priority Critical patent/GB486448A/en
Publication of GB486448A publication Critical patent/GB486448A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03B21/00—Generation of oscillations by combining unmodulated signals of different frequencies
    • H03B21/01—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies
    • H03B21/04—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies using several similar stages

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

486,448. Frequency measurements. STANDARD TELEPHONES & CABLES, Ltd.. and JACOBSEN, B. B. Dec. 2, 1936. No. 33100. [Class 37] [Also in Group XL] In an oscillation-generator suitable for use in wave-analysis, an output frequency variable from, for instance, 0 to 100 kc./sec. is produced from a standard input frequency of 1000 c. /sec. by intermodulating the outputs of three oscillators, which are calibrated respectively from 1 to 1000 c./sec., from 0 to 9 kc. /sec. in ten steps, and from 0 to 90 kc. /sec. in ten steps, to give a direct reading of the output frequency. For the analysis of complex waves a variable band-pass filter is constructed by feeding into a fixed band-pass filter with a narrow pass band the output from a modulator into which the complex wave is fed together with the variable oscillation produced by means of the above oscillation-generator, the construction of which forms the subject-matter of the invention. The oscillator may be calibrated in terms of the difference between the frequency which it generates and the frequency of the fixed filter. A second oscillation generator constructed according to the invention is used for producing a comparison frequency, and may have some parts in common with the first oscillator. Specification 475,531, [Group XL], is referred to.
GB3310036A 1936-12-02 1936-12-02 Improvements in or relating to electric oscillation generators Expired GB486448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3310036A GB486448A (en) 1936-12-02 1936-12-02 Improvements in or relating to electric oscillation generators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3310036A GB486448A (en) 1936-12-02 1936-12-02 Improvements in or relating to electric oscillation generators

Publications (1)

Publication Number Publication Date
GB486448A true GB486448A (en) 1938-06-02

Family

ID=10348570

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3310036A Expired GB486448A (en) 1936-12-02 1936-12-02 Improvements in or relating to electric oscillation generators

Country Status (1)

Country Link
GB (1) GB486448A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433290A (en) * 1945-01-22 1947-12-23 Rca Corp Two-way radio communication system
US2492218A (en) * 1945-07-26 1949-12-27 Radio Patents Corp Harmonic generator
US2646512A (en) * 1941-09-30 1953-07-21 Univ Leland Stanford Junior Oscillation generator
US2662182A (en) * 1949-04-28 1953-12-08 Hartford Nat Bank & Trust Co Generation of electric oscillation
US2666141A (en) * 1946-05-08 1954-01-12 James K Clapp Single side band mixer for moving target indicating radar systems
US2679005A (en) * 1942-11-23 1954-05-18 Fr Des Telecomm Soc Oscillation generation system
US3208006A (en) * 1961-11-13 1965-09-21 Hewlett Packard Co Variable frequency signal generators

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2646512A (en) * 1941-09-30 1953-07-21 Univ Leland Stanford Junior Oscillation generator
US2679005A (en) * 1942-11-23 1954-05-18 Fr Des Telecomm Soc Oscillation generation system
US2433290A (en) * 1945-01-22 1947-12-23 Rca Corp Two-way radio communication system
US2492218A (en) * 1945-07-26 1949-12-27 Radio Patents Corp Harmonic generator
US2666141A (en) * 1946-05-08 1954-01-12 James K Clapp Single side band mixer for moving target indicating radar systems
US2662182A (en) * 1949-04-28 1953-12-08 Hartford Nat Bank & Trust Co Generation of electric oscillation
US3208006A (en) * 1961-11-13 1965-09-21 Hewlett Packard Co Variable frequency signal generators

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