GB474388A - Improvements in or relating to electrical frequency dividing circuit arrangements - Google Patents

Improvements in or relating to electrical frequency dividing circuit arrangements

Info

Publication number
GB474388A
GB474388A GB12218/36A GB1221836A GB474388A GB 474388 A GB474388 A GB 474388A GB 12218/36 A GB12218/36 A GB 12218/36A GB 1221836 A GB1221836 A GB 1221836A GB 474388 A GB474388 A GB 474388A
Authority
GB
United Kingdom
Prior art keywords
frequency
valve
input
grids
circuit
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
GB12218/36A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
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 Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB12218/36A priority Critical patent/GB474388A/en
Priority to US131325A priority patent/US2154484A/en
Publication of GB474388A publication Critical patent/GB474388A/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
    • H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
    • H03B19/06—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes
    • H03B19/08—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device
    • H03B19/12—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device using division only

Landscapes

  • Lasers (AREA)
  • Transmitters (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

474,388. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and BELL, D. A. April 29, 1936, No. 12218. [Class 40 (v)] In a frequency-divider capable of dividing by any even number there is no output in the absence of input. The input frequency is applied through terminals 11 to the grids 5, 6 in parallel, while the subharmonic frequency is superimposed on the same grids by way of cross coupling condensers 15, 16, connected across a circuit 18 tuned to the subharmonic frequency. The grids 5, 6 are so biassed that no anode current flows in a valve unless both the component voltages on the grid of that valve are positive ; and such a coincidence of positive voltages is shown to occur in each valve once per cycle of the subharmonic frequency. The cross coupling is of such magnitude that it is insufficient to cause self-oscillation. The output circuit, having output terminals 21, is balanced with respect to the input circuit and is consequently freed from the input frequency.
GB12218/36A 1936-04-29 1936-04-29 Improvements in or relating to electrical frequency dividing circuit arrangements Expired GB474388A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB12218/36A GB474388A (en) 1936-04-29 1936-04-29 Improvements in or relating to electrical frequency dividing circuit arrangements
US131325A US2154484A (en) 1936-04-29 1937-03-17 Frequency divider

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12218/36A GB474388A (en) 1936-04-29 1936-04-29 Improvements in or relating to electrical frequency dividing circuit arrangements

Publications (1)

Publication Number Publication Date
GB474388A true GB474388A (en) 1937-10-29

Family

ID=10000518

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12218/36A Expired GB474388A (en) 1936-04-29 1936-04-29 Improvements in or relating to electrical frequency dividing circuit arrangements

Country Status (2)

Country Link
US (1) US2154484A (en)
GB (1) GB474388A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1086300B (en) * 1958-12-17 1960-08-04 Siemens Ag Circuit arrangement for frequency division and multiplication

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435259A (en) * 1940-06-14 1948-02-03 Western Union Telegraph Co Frequency control apparatus
US2537077A (en) * 1942-06-19 1951-01-09 Millard S Mcvay Double pulse generator
US2591114A (en) * 1945-09-14 1952-04-01 Us Navy Frequency divider
NL255389A (en) * 1959-08-31

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1086300B (en) * 1958-12-17 1960-08-04 Siemens Ag Circuit arrangement for frequency division and multiplication

Also Published As

Publication number Publication date
US2154484A (en) 1939-04-18

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