GB477875A - Apparatus for producing harmonic frequency electrical waves from a base frequency - Google Patents

Apparatus for producing harmonic frequency electrical waves from a base frequency

Info

Publication number
GB477875A
GB477875A GB12831/37A GB1283137A GB477875A GB 477875 A GB477875 A GB 477875A GB 12831/37 A GB12831/37 A GB 12831/37A GB 1283137 A GB1283137 A GB 1283137A GB 477875 A GB477875 A GB 477875A
Authority
GB
United Kingdom
Prior art keywords
harmonics
frequency
tuned
inductance
base frequency
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
GB12831/37A
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
Publication of GB477875A publication Critical patent/GB477875A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/06—Arrangements for supplying the carrier waves ; Arrangements for supplying synchronisation signals
    • 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
    • H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
    • H03B19/03—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source using non-linear inductance
    • 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
    • H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
    • H03B19/16—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source using uncontrolled rectifying devices, e.g. rectifying diodes or Schottky diodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Rectifiers (AREA)
  • Inverter Devices (AREA)
  • Power Conversion In General (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

477,875. Frequency changing. STANDARD TELEPHONES & CABLES, Ltd. May 5, 1937, No. 12831. Convention date, May 5, 1936. [Class 38 (ii)] In a frequency changer comprising an inductance L having a saturable core and energized from a source of base frequency 10 to produce a group of harmonics, the primary circuit being tuned to the base frequency by a condenser Cl and aircored inductance L1 of greater magnitude than the inductance L, the secondary circuit comprises a capacity C and a resistive load R whereby substantial uniformity in the magnitude of the harmonics is ensured. The resistive character of the load may be obtained by using a bank of filters 35, Fig. 2, tuned to the different odd harmonics required and coupled through a transformer 34 to the output circuit 30. Where even harmonics are required, a bridge arrangement of rectifiers 36 may be employed as shown with a bank of filters 38 tuned to the even harmonics and connected to the rectifier bridge through a transformer 37.
GB12831/37A 1936-05-05 1937-05-05 Apparatus for producing harmonic frequency electrical waves from a base frequency Expired GB477875A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US77989A US2117752A (en) 1936-05-05 1936-05-05 Harmonic producer
GB22220/38A GB516844A (en) 1936-05-05 1938-07-26 Apparatus for producing harmonic frequency electrical waves from a base frequency

Publications (1)

Publication Number Publication Date
GB477875A true GB477875A (en) 1938-01-07

Family

ID=10175864

Family Applications (2)

Application Number Title Priority Date Filing Date
GB12831/37A Expired GB477875A (en) 1936-05-05 1937-05-05 Apparatus for producing harmonic frequency electrical waves from a base frequency
GB22220/38A Expired GB516844A (en) 1936-05-05 1938-07-26 Apparatus for producing harmonic frequency electrical waves from a base frequency

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB22220/38A Expired GB516844A (en) 1936-05-05 1938-07-26 Apparatus for producing harmonic frequency electrical waves from a base frequency

Country Status (5)

Country Link
US (1) US2117752A (en)
CH (1) CH204388A (en)
DE (1) DE886927C (en)
FR (2) FR821372A (en)
GB (2) GB477875A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL78602C (en) * 1943-10-21 1955-06-22
US2438888A (en) * 1943-12-06 1948-04-06 Bell Telephone Labor Inc Radio object detector training device
US2420213A (en) * 1944-07-11 1947-05-06 Union Switch & Signal Co Apparatus for frequency multiplication of alternating electric currents
BE460578A (en) * 1944-10-27
US2772594A (en) * 1952-03-28 1956-12-04 Maas Rowe Electromusic Corp Apparatus for producing chime tones
US2776373A (en) * 1953-12-14 1957-01-01 Bell Telephone Labor Inc Frequency conversion circuits
US2828420A (en) * 1956-06-18 1958-03-25 Joseph J Suozzi Magnetic tripler power factor correction
US3008081A (en) * 1956-07-28 1961-11-07 Philips Corp Frequency-transformation device comprising at least one non-linear element
DE1062764B (en) * 1957-06-19 1959-08-06 Telefunken Gmbh Arrangement for generating harmonic frequencies with iron saturation
US2981921A (en) * 1958-11-03 1961-04-25 Arcoa Inc Connector for connecting a branch wire to a current conducting through wire
US3206535A (en) * 1960-05-07 1965-09-14 Nihon Gakki Seizo Kabushiki Ka Attenuating sound control system for electronic musical instruments
US3133259A (en) * 1960-08-26 1964-05-12 Bell Telephone Labor Inc Harmonic selective filter
DE2705010A1 (en) * 1977-02-07 1978-08-10 Kraftwerk Union Ag DEVICE FOR COUPLING PIPING IN REACTOR PRESSURE VESSELS, PREFERABLY THE PIPING OF THE FEED WATER DISTRIBUTOR
US4504897A (en) * 1983-11-15 1985-03-12 White Scientific Consultants Inc. Harmonic noise control in chopper type voltage regulators
US5013974A (en) * 1987-08-24 1991-05-07 Nilssen Ole K Electronic ballast with improved lamp current crest factor

Also Published As

Publication number Publication date
CH204388A (en) 1939-04-30
US2117752A (en) 1938-05-17
GB516844A (en) 1940-01-12
FR821372A (en) 1937-12-03
DE886927C (en) 1953-08-20
FR49760E (en) 1939-07-13

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