GB552301A - Improvements in or relating to trigger circuits employing thermionic valves - Google Patents

Improvements in or relating to trigger circuits employing thermionic valves

Info

Publication number
GB552301A
GB552301A GB1260841A GB1260841A GB552301A GB 552301 A GB552301 A GB 552301A GB 1260841 A GB1260841 A GB 1260841A GB 1260841 A GB1260841 A GB 1260841A GB 552301 A GB552301 A GB 552301A
Authority
GB
United Kingdom
Prior art keywords
valve
coupling
valves
current
signal
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
GB1260841A
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.)
THOMAS CAYTON NUTTALL
Cinema Television Ltd
Original Assignee
THOMAS CAYTON NUTTALL
Cinema Television 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 THOMAS CAYTON NUTTALL, Cinema Television Ltd filed Critical THOMAS CAYTON NUTTALL
Priority to GB1260841A priority Critical patent/GB552301A/en
Publication of GB552301A publication Critical patent/GB552301A/en
Priority to FR938032D priority patent/FR938032A/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
    • H03K3/12—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 bistable
    • H03K3/13—Bistables with hysteresis, e.g. Schmitt trigger

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

552,301. Valve relay circuits. CINEMATELEVISION, Ltd., and NUTTALL, T. C. Sept. 29, 1941, No. 12608. [Class 40 (v)] A circuit comprises two valves with a common cathode resistance and an impedance in the anode circuit of one valve to which the signal is fed and with a coupling to the grid of the other valve from the anode of the first valve. Change in current in the anode circuit of either valve may be utilized and the coupling impedances have a value such that the coupling is greater than the minimum value required to produce instability so that the current changes over abruptly from one valve to the other. The Figure shows a pair of valves 1, 2 coupled by resistances 5, 6, 7 and having a common cathode resistance 4. In this manner a closed regenerative path is provided which will produce instability if the transmission round the path exceeds unity and cause one valve to be cut off and the other to pass full current in both directions. To reduce the overlap between the two critical values at which the valves change over without restricting the magnitude of the current change, the intervalve coupling may be given a rising frequency characteristic as by the provision of condenser 8. One of the coupling impedances may be variable to control the extent of the overlap. The signal may be derived from a photo-cell so that operation is effected by light values or the arrangement may be used as a discriminating circuit in a counting system. An electro-magnetic relay may be operated on receipt of a definite value of signal or the arrangement may be used for wave shaping.
GB1260841A 1941-09-29 1941-09-29 Improvements in or relating to trigger circuits employing thermionic valves Expired GB552301A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1260841A GB552301A (en) 1941-09-29 1941-09-29 Improvements in or relating to trigger circuits employing thermionic valves
FR938032D FR938032A (en) 1941-09-29 1946-12-27 Improvements to electrical breaking devices using thermionic lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1260841A GB552301A (en) 1941-09-29 1941-09-29 Improvements in or relating to trigger circuits employing thermionic valves

Publications (1)

Publication Number Publication Date
GB552301A true GB552301A (en) 1943-03-31

Family

ID=10007770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1260841A Expired GB552301A (en) 1941-09-29 1941-09-29 Improvements in or relating to trigger circuits employing thermionic valves

Country Status (2)

Country Link
FR (1) FR938032A (en)
GB (1) GB552301A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429844A (en) * 1945-01-13 1947-10-28 Max I Rothman Pulse delay circuits
US2432188A (en) * 1944-06-22 1947-12-09 Rca Corp Telegraph secrecy system
US2459852A (en) * 1945-06-08 1949-01-25 Gen Electric Trigger network
US2513954A (en) * 1942-09-28 1950-07-04 Gen Electric Synchronized pulse generator
US2693531A (en) * 1948-09-06 1954-11-02 Pye Ltd Apparatus for generating television and like waveforms
US2754417A (en) * 1943-11-24 1956-07-10 Jr George A Brettell Non-inverting amplifier relay system
US2997600A (en) * 1959-03-04 1961-08-22 Telefunken Gmbh Pulse generator with means for producing pulses independent of load conditions

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9169781B2 (en) 2012-01-31 2015-10-27 United Technologies Corporation Turbine engine gearbox
US11092020B2 (en) 2018-10-18 2021-08-17 Raytheon Technologies Corporation Rotor assembly for gas turbine engines

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2513954A (en) * 1942-09-28 1950-07-04 Gen Electric Synchronized pulse generator
US2754417A (en) * 1943-11-24 1956-07-10 Jr George A Brettell Non-inverting amplifier relay system
US2432188A (en) * 1944-06-22 1947-12-09 Rca Corp Telegraph secrecy system
US2429844A (en) * 1945-01-13 1947-10-28 Max I Rothman Pulse delay circuits
US2459852A (en) * 1945-06-08 1949-01-25 Gen Electric Trigger network
US2693531A (en) * 1948-09-06 1954-11-02 Pye Ltd Apparatus for generating television and like waveforms
US2997600A (en) * 1959-03-04 1961-08-22 Telefunken Gmbh Pulse generator with means for producing pulses independent of load conditions

Also Published As

Publication number Publication date
FR938032A (en) 1948-09-02

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