GB663455A - Improvements in or relating to trigger circuits - Google Patents

Improvements in or relating to trigger circuits

Info

Publication number
GB663455A
GB663455A GB27707/49A GB2770749A GB663455A GB 663455 A GB663455 A GB 663455A GB 27707/49 A GB27707/49 A GB 27707/49A GB 2770749 A GB2770749 A GB 2770749A GB 663455 A GB663455 A GB 663455A
Authority
GB
United Kingdom
Prior art keywords
anode
resistors
valve
cross
control
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
GB27707/49A
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.)
British Tabulating Machine Co Ltd
Original Assignee
British Tabulating Machine 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 British Tabulating Machine Co Ltd filed Critical British Tabulating Machine Co Ltd
Publication of GB663455A publication Critical patent/GB663455A/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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/82—Pulse counters comprising counting chains; Frequency dividers comprising counting chains using gas-filled tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Electrotherapy Devices (AREA)
  • Amplifiers (AREA)

Abstract

663,455. Valve relay circuits. BRITISH TABULATING MACHINE CO., Ltd. Oct. 28, 1949 [Nov. 17, 1948], No. 27707/49. Class 40 (vi). In a trigger-pair circuit comprising tetrode valves having cross couplings between their anode and control-grids the speed of operation is increased by capacitors connected between the anode of each valve and the screen grid of the other which reduce the effect of the interelectrode capacities and cause the voltages on the control and screen grid of each valve to change simultaneously in the same direction. The Figure shows a trigger-pair circuit comprising cross-connected tetrode valves A<SP>1</SP>, A<SP>2</SP> which is triggered by negative going pulses applied to the common anode circuit at terminal 32. The anode and control grids are cross-connected by the parallel connected capacitors and resistors 23, 20 and 26, 28 respectively and the inter-electrode capacities are reduced by the neutralizing networks 35, 36 and 37, 38 respectively, which lessen the tendency to parasitic oscillation at high operative speeds. The values of the capacitance and resistance in the series connected neutralizing networks is adjusted to effect a compromise between complete neutralization and the deleterious effect on speed of operation of capacitive loading of the output circuit. Resistors 24, 29 and 14, 17 are grid and anode stopper resistors respectively.
GB27707/49A 1948-11-17 1949-10-28 Improvements in or relating to trigger circuits Expired GB663455A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60537A US2540025A (en) 1948-11-17 1948-11-17 Neutralized trigger circuit

Publications (1)

Publication Number Publication Date
GB663455A true GB663455A (en) 1951-12-19

Family

ID=22030119

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27707/49A Expired GB663455A (en) 1948-11-17 1949-10-28 Improvements in or relating to trigger circuits

Country Status (5)

Country Link
US (1) US2540025A (en)
DE (1) DE904326C (en)
FR (1) FR999582A (en)
GB (1) GB663455A (en)
NL (1) NL149934B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913578A (en) * 1954-03-17 1959-11-17 Bell Telephone Labor Inc Multivibrator circuits
US3140434A (en) * 1959-08-11 1964-07-07 Ass Elect Ind Bistable multivibrator controlled oscillating d.-c. motor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2416513A (en) * 1942-11-25 1947-02-25 Philco Corp Multivibrator
US2404047A (en) * 1943-01-21 1946-07-16 Rca Corp Electronic computing device

Also Published As

Publication number Publication date
US2540025A (en) 1951-01-30
FR999582A (en) 1952-02-01
NL149934B (en)
DE904326C (en) 1954-02-18

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