GB452790A - Improvements in or relating to electron discharge device circuit arrangements - Google Patents

Improvements in or relating to electron discharge device circuit arrangements

Info

Publication number
GB452790A
GB452790A GB6397/35A GB639735A GB452790A GB 452790 A GB452790 A GB 452790A GB 6397/35 A GB6397/35 A GB 6397/35A GB 639735 A GB639735 A GB 639735A GB 452790 A GB452790 A GB 452790A
Authority
GB
United Kingdom
Prior art keywords
grid
current
anode
resistances
causes
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
GB6397/35A
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.)
Marconis Wireless Telegraph Co 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
Publication of GB452790A publication Critical patent/GB452790A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines

Abstract

452,790. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.- (Assignees of Mathes, R. E. ; 755, Belvidero Avenue, Westfield, New Jersey, U.S.A.) Feb. 28, 1935, No. 6397. Convention date, Feb. 28, 1934. [Class 40 (v)] A thermionic trigger arrangement comprises a single valve having two control grids G1, G4, a grid-anode G2 and a plate anode P. With no signal from S, the control grid G1 is so biassed from - EC and R1 that the electron stream is partially blocked. The grid-anode G2 passes current due to positive bias from +EB through R6, the values of resistances R4, in the circuit of the second control grid G4 and R5, connecting anode G2 and grid G4, being chosen so that the p.d. across R6 produces such a potential on G4 that the anode P passes current which flows through R3. Resistances R1, R2 are such that the potential of G1 is not affected. A positive pulse from S increases current from G2 through R6 and the negative bias on grid G4 is thereby increased, reducing current drawn by anode P through R3. The action is cumulative until current from G2 reaches saturation ; this is the first condition of stability. A negative signal pulse from S causes the converse cycle to occur, anode current from P reaching a maximum and current from G2 a minimum; until the second stable condition is reached. In a modification, Fig. 2 (not shown), the signals are applied to the outer grid G4, the inner grid G1 being connected to the cathode ; resistances R1, R2 are consequently omitted. The grid G4 when positive causes plate current to increase and when negative causes increase in current to the grid G2, robbing the plate current. Values of the resistances are indicated in the Specification.
GB6397/35A 1934-02-28 1935-02-28 Improvements in or relating to electron discharge device circuit arrangements Expired GB452790A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US452790XA 1934-02-28 1934-02-28

Publications (1)

Publication Number Publication Date
GB452790A true GB452790A (en) 1936-08-28

Family

ID=21936976

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6397/35A Expired GB452790A (en) 1934-02-28 1935-02-28 Improvements in or relating to electron discharge device circuit arrangements

Country Status (2)

Country Link
DE (1) DE680103C (en)
GB (1) GB452790A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB663574A (en) * 1949-03-04 1951-12-27 Standard Telephones Cables Ltd Improvements in or relating to electrical circuits employing static electrical switches
US2631233A (en) * 1950-12-28 1953-03-10 Ibm Secondary emission trigger circuit

Also Published As

Publication number Publication date
DE680103C (en) 1939-08-22

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