GB495404A - Improvements in or relating to thermionic valve oscillation generators - Google Patents

Improvements in or relating to thermionic valve oscillation generators

Info

Publication number
GB495404A
GB495404A GB13549/37A GB1354937A GB495404A GB 495404 A GB495404 A GB 495404A GB 13549/37 A GB13549/37 A GB 13549/37A GB 1354937 A GB1354937 A GB 1354937A GB 495404 A GB495404 A GB 495404A
Authority
GB
United Kingdom
Prior art keywords
potential
rectifiers
valves
grid
grid potential
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
GB13549/37A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB495404A publication Critical patent/GB495404A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03K3/08—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 astable

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electron Tubes For Measurement (AREA)
  • Particle Accelerators (AREA)

Abstract

495,404. Valve generating circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. May 13, 1937, No. 13549. Convention date, May 12, 1936. [Class 40 (v)] In a multi-vibrator, variation of the impulse frequency due to change of valve characteristics with age is overcome by providing in parallel with the grid-cathode path of one or both valves, a rectifier and D.C. potential sources in series. Valves 10, 11, anode resistances 12, 13, and resistance-capacity units 14, 15 and 17, 18, Fig. 1, form a normal multivibrator arrangement with potentials supplied from potentiometer 24. Rectifiers 20, 21 have a negative bias with respect to the cathodes equal to the potential between points P1, P3, and rectifiers 22, 23, have as bias the potential between P1, P2. The full curves, Figs. 2, 3, show the variation in grid potential of the two valves when rectifiers 22, 23 are not considered, the minimum values of grid potential, P4, P5, being dependent upon the steepness of the anode current-grid potential characteristic of the valves. ego Represents the grid potential at which anode current ceases. When rectifiers 22, 23 are considered the grid potential does not fall below P2 and the curves A, B, are obtained.
GB13549/37A 1936-05-12 1937-05-13 Improvements in or relating to thermionic valve oscillation generators Expired GB495404A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE495404X 1936-05-12

Publications (1)

Publication Number Publication Date
GB495404A true GB495404A (en) 1938-11-14

Family

ID=6544880

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13549/37A Expired GB495404A (en) 1936-05-12 1937-05-13 Improvements in or relating to thermionic valve oscillation generators

Country Status (3)

Country Link
US (1) US2207511A (en)
FR (1) FR821506A (en)
GB (1) GB495404A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423931A (en) * 1933-05-05 1947-07-15 Rca Corp Apparatus for generating sweep voltages
US2429809A (en) * 1942-09-17 1947-10-28 Gen Electric Radio locating equipment
US2562660A (en) * 1943-12-04 1951-07-31 Chance Britton Pulse generating circuit
US2452586A (en) * 1944-03-23 1948-11-02 Sperry Corp Phase shift circuits
US2502687A (en) * 1944-12-30 1950-04-04 Rca Corp Multivibrator and control of same
US2591249A (en) * 1946-06-28 1952-04-01 Belmont Radio Corp Transformerless saw-tooth current generator
BE481991A (en) * 1947-04-22
US2540539A (en) * 1947-10-11 1951-02-06 Rca Corp Multivibrator type oscillator
US6525579B1 (en) * 1954-01-12 2003-02-25 The United States Of America As Represented By The Attorney General Pulse translational circuits
US2834885A (en) * 1954-12-24 1958-05-13 Pye Ltd Oscillator circuits
US2904756A (en) * 1957-05-13 1959-09-15 Nagard Ltd Astable multivibrators
US3064205A (en) * 1958-09-29 1962-11-13 Honeywell Regulator Co Variable frequency oscillator
US3026487A (en) * 1959-06-30 1962-03-20 Ibm Pulse generators

Also Published As

Publication number Publication date
FR821506A (en) 1937-12-07
US2207511A (en) 1940-07-09

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