GB568556A - Improvements in or relating to frequency dividing circuits - Google Patents

Improvements in or relating to frequency dividing circuits

Info

Publication number
GB568556A
GB568556A GB17375/43A GB1737543A GB568556A GB 568556 A GB568556 A GB 568556A GB 17375/43 A GB17375/43 A GB 17375/43A GB 1737543 A GB1737543 A GB 1737543A GB 568556 A GB568556 A GB 568556A
Authority
GB
United Kingdom
Prior art keywords
valve
vibrator
buffer stage
fed
resistance
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
GB17375/43A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB568556A publication Critical patent/GB568556A/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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/04—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback
    • H03K3/05—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback using means other than a transformer for feedback
    • H03K3/06—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback using means other than a transformer for feedback using at least two tubes so coupled that the input of one is derived from the output of another, e.g. multivibrator

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Particle Accelerators (AREA)

Abstract

568,556. Valve generating circuits. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Oct. 21, 1943, No. 17375. Convention date, Oct. 22, 1942. [Class 40 (v)] The invention relates to frequency dividing circuits comprising a multi-vibrator to which the frequency to be divided is fed through a buffer stage. The cathodes of the multivibrator pair are connected together and grounded through a resistance, while the anode of one valve is connected through a resistance to a direct-current ,source and through a coupling condenser to the grid of the other valve. The buffer stage whose output is fed to the control grid of one of the multi-vibrator valves has its cathode positively biassed relatively to ground, while its control grid is connected both to the anode of one of the multivibrator valves and to means for impressing on it a voltage which increases with time relatively to ground. In this way only the first valve of the multi-vibrator is conductive during the charging period while the gain in the buffer stage, and thus the amplitude of the negative pulses fed to the conductive valve in the multi-vibrator, increases rapidly at the point at which the valves in the multi-vibrator change over in conductivity. In this way, division of frequency in a ratio much greater than 10 to 1 is achieved with reliable operation. The Figure shows a multi-vibrator 1, 2 with the common cathode resistance 9 from which the output is derived, while the ratio of division is determined by the negative bias applied from the potentiometer 12 to the grid of the valve 2 and the time constant of the condenser 31 charged over resistance 29 and discharged by valve 2. The input is applied to terminals 27 of the buffer stage 16, from the output of which negative pulses are fed over a condenser 22 to the multi-vibrator valve 1. The point at which the gain of the buffer stage 16 increases is determined by the bias applied to the cathode from potentiometer 28.
GB17375/43A 1942-10-22 1943-10-21 Improvements in or relating to frequency dividing circuits Expired GB568556A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US462998A US2365583A (en) 1942-10-22 1942-10-22 Frequency-dividing circuits

Publications (1)

Publication Number Publication Date
GB568556A true GB568556A (en) 1945-04-10

Family

ID=23838526

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17375/43A Expired GB568556A (en) 1942-10-22 1943-10-21 Improvements in or relating to frequency dividing circuits

Country Status (4)

Country Link
US (1) US2365583A (en)
BE (1) BE472352A (en)
GB (1) GB568556A (en)
NL (1) NL66092C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116679125A (en) * 2023-06-07 2023-09-01 海安市综合检验检测中心 Strain resistance measuring circuit device for generating measured signal by using multivibrator

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE472237A (en) * 1943-06-22
US2455616A (en) * 1944-11-15 1948-12-07 Remco Electronic Inc Transientless modulator system for keying
US2567845A (en) * 1945-04-12 1951-09-11 Philco Corp Counter circuit
US2526000A (en) * 1945-05-26 1950-10-17 Rca Corp Frequency divider
US2573354A (en) * 1945-07-26 1951-10-30 Rca Corp Variable frequency multivibrator
US2747094A (en) * 1945-12-10 1956-05-22 Robert M Walker Dividing circuit
US3316490A (en) * 1945-12-28 1967-04-25 Thomas F Jones Variable time delay circuit for producing pulses of predetermined width or pulses after a predetermined interval
US2562889A (en) * 1946-07-22 1951-08-07 Farnsworth Res Corp Frequency divider
GB631678A (en) * 1947-02-19 1949-11-08 Graham John Scoles Improvements relating to electronic timing circuits
US2661421A (en) * 1950-06-28 1953-12-01 Du Mont Allen B Lab Inc Sweep generator protection circuit
US2762923A (en) * 1953-08-06 1956-09-11 Stewart Warner Corp Pulse frequency divider
US2884525A (en) * 1956-03-05 1959-04-28 Daystrom Inc Sawtooth wave generator
US3140446A (en) * 1962-08-03 1964-07-07 Gen Electric Communication receiver with noise blanking
US3332036A (en) * 1964-04-17 1967-07-18 Ohio Crankshaft Co High frequency electrical power source with pulsating control

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116679125A (en) * 2023-06-07 2023-09-01 海安市综合检验检测中心 Strain resistance measuring circuit device for generating measured signal by using multivibrator
CN116679125B (en) * 2023-06-07 2024-04-09 海安市综合检验检测中心 Strain resistance measuring circuit device for generating measured signal by using multivibrator

Also Published As

Publication number Publication date
NL66092C (en)
BE472352A (en)
US2365583A (en) 1944-12-19

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