GB661335A - Improvements in and relating to trigger circuits employing grid controlled tubes - Google Patents

Improvements in and relating to trigger circuits employing grid controlled tubes

Info

Publication number
GB661335A
GB661335A GB18105/49A GB1810549A GB661335A GB 661335 A GB661335 A GB 661335A GB 18105/49 A GB18105/49 A GB 18105/49A GB 1810549 A GB1810549 A GB 1810549A GB 661335 A GB661335 A GB 661335A
Authority
GB
United Kingdom
Prior art keywords
pulses
circuit
triggering
capacitors
trigger
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
GB18105/49A
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 GB661335A publication Critical patent/GB661335A/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electrostatic Separation (AREA)

Abstract

661,335. Valve relay circuits. BRITISH TABULATING MACHINE CO., Ltd. July 8, 1949 [July 9, 1948], No. 18105/49. Class 40 (vi). A trigger-pair circuit comprises two valves cross-coupled with resistors between the anode and control grids and with a capacitor connected between the anode and control grid of each valve, so that when a triggering pulse is applied to either control grid the switching of the circuit from one of its two stable states to the other, occurs only after a time delay. The Figure shows a trigger-pair circuit comprising valves 10 and 11 cross connected by resistors 22, 19 and 24, 17 and with a common cathode resistor 15. Capacitors 26 and 28 are connected in feed-back circuits between the anode and control grid circuits of valves 10 and 11 respectively, so that when positive triggering pulses are applied to either input 29 or 34 the circuit only changes over after a predetermined delay dependent on the value of feed-back capacitors. The circuit will thus only change-over if the trigger pulses have at least a predetermined duration, e.g. if capacitors 26, 28 are each of 0.005 microfarad, the triggering pulses to effect a change-over must must be of at least 2,000 microseconds duration. The cathode resistor 15 tends to prevent the non-conducting tube becoming conductive when the current flow through the conductive tube is increased by a positive triggering pulse applied at the input. When positive going pulses are applied simultaneously or with a time interval at two inputs 29, 34 the current will not change over unless the interval between the two triggering pulses is greater than some predetermined value, e.g. 2,000 microseconds when capacitors 26, 28 have values of 0.005 microfarad. The circuit is thus protected against triggering by spurious noise pulses.
GB18105/49A 1948-07-09 1949-07-08 Improvements in and relating to trigger circuits employing grid controlled tubes Expired GB661335A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37939A US2524134A (en) 1948-07-09 1948-07-09 Bucking trigger circuit

Publications (1)

Publication Number Publication Date
GB661335A true GB661335A (en) 1951-11-21

Family

ID=21897171

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18105/49A Expired GB661335A (en) 1948-07-09 1949-07-08 Improvements in and relating to trigger circuits employing grid controlled tubes

Country Status (6)

Country Link
US (1) US2524134A (en)
BE (1) BE489565A (en)
CH (1) CH277470A (en)
FR (1) FR990423A (en)
GB (1) GB661335A (en)
NL (1) NL147458B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696557A (en) * 1949-11-16 1954-12-07 Gen Precision Lab Inc Self-monitoring trigger generator
US2934603A (en) * 1951-07-12 1960-04-26 Nederlanden Staat Electronic relay and the control of arrangements therewith
US2782306A (en) * 1951-08-09 1957-02-19 Ibm Electronic trigger circuit
US2764677A (en) * 1952-12-23 1956-09-25 Bell Telephone Labor Inc Monostable multivibrator
US2894128A (en) * 1954-12-24 1959-07-07 Ibm Mono-stable multivibrator
US2903525A (en) * 1956-09-04 1959-09-08 Hughes Aircraft Co Phase inverter
US3008088A (en) * 1957-11-07 1961-11-07 Bell Telephone Labor Inc Synchronized multivibrator with selectable clamping means for rendering it inoperative
US2892084A (en) * 1957-11-25 1959-06-23 Jr Dwight D Wilcox Pulse gating circuit
US3111626A (en) * 1959-10-23 1963-11-19 Nederlanden Staat Gating circuit with stabilizing means at the voltage divider output tap of each multivibrator therein
US3249762A (en) * 1961-10-09 1966-05-03 Cutler Hammer Inc Binary logic modules
US3335333A (en) * 1964-11-12 1967-08-08 Ideal Ind Bistable multivibrator for operating a pair of control coils

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB480289A (en) * 1937-03-09 1938-02-21 Cable & Wireless Ltd Improvements relating to wireless telegraph systems
US2457974A (en) * 1943-06-17 1949-01-04 Rca Corp Pulse type telegraph receiver
US2461871A (en) * 1947-08-01 1949-02-15 Avco Mfg Corp Relaxation oscillator capacitance multivibrator

Also Published As

Publication number Publication date
CH277470A (en) 1951-08-31
BE489565A (en)
NL147458B (en)
US2524134A (en) 1950-10-03
FR990423A (en) 1951-09-21

Similar Documents

Publication Publication Date Title
GB661335A (en) Improvements in and relating to trigger circuits employing grid controlled tubes
GB614328A (en) Improvements in electron trigger circuits
GB638066A (en) Improvements in or relating to electronic switching means and commutators
US3226568A (en) Gating means for passing a predetermined number of pulses
GB740367A (en) Improvements in or relating to trigger and counter circuits
GB664895A (en) Improvements in or relating to electronic counters
US2684440A (en) Pulse-controlled bistable multivibrator
GB813860A (en) Improvements in or relating to transistor circuits
US3034070A (en) Multivibrator controlled oscillator
GB665821A (en) Improvements in or relating to electronic trigger circuits
GB614550A (en) Improvements in or relating to pulse delay system
US2926248A (en) Time delay monostable electronic control unit
US2901608A (en) Polystable trigger circuit
US2554994A (en) Electronic switching circuit
US2775696A (en) Millivolt gating circuit
GB1006719A (en) Improvements in or relating to transistor bistable circuits
US2743359A (en) Counting circuit
US2862104A (en) Compensated gate circuit
GB782233A (en)
GB663455A (en) Improvements in or relating to trigger circuits
SU131787A1 (en) Trigger electronic contact
US2933688A (en) Static electrical switches
GB1059633A (en) n-stable circuit arrangement
US2560922A (en) Counter control circuits
GB874740A (en) Electronic bistable storage circuit and other circuits including the same