GB847334A - Improvements in or relating to magnetic trigger devices - Google Patents

Improvements in or relating to magnetic trigger devices

Info

Publication number
GB847334A
GB847334A GB36489/58A GB3648958A GB847334A GB 847334 A GB847334 A GB 847334A GB 36489/58 A GB36489/58 A GB 36489/58A GB 3648958 A GB3648958 A GB 3648958A GB 847334 A GB847334 A GB 847334A
Authority
GB
United Kingdom
Prior art keywords
core
windings
signal
cores
bias
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
GB36489/58A
Inventor
Arthur Edward Brewster
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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
Priority claimed from GB21295/58A external-priority patent/GB849894A/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to US840770A priority Critical patent/US3181001A/en
Priority to CH8038459A priority patent/CH387100A/en
Priority to NL245274D priority patent/NL245274A/xx
Priority to BE584582A priority patent/BE584582A/en
Priority claimed from GB15660/60A external-priority patent/GB900366A/en
Publication of GB847334A publication Critical patent/GB847334A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
    • G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
    • G11C11/36—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using diodes, e.g. as threshold elements, i.e. diodes assuming a stable ON-stage when driven above their threshold (S- or N-characteristic)
    • G11C11/38—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using diodes, e.g. as threshold elements, i.e. diodes assuming a stable ON-stage when driven above their threshold (S- or N-characteristic) using tunnel diodes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2/00—Lime, magnesia or dolomite
    • C04B2/02—Lime
    • C04B2/04—Slaking
    • C04B2/06—Slaking with addition of substances, e.g. hydrophobic agents ; Slaking in the presence of other compounds
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
    • H03B19/03—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source using non-linear inductance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/58—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being tunnel diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/80—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using non-linear magnetic devices; using non-linear dielectric devices
    • H03K17/82—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using non-linear magnetic devices; using non-linear dielectric devices the devices being transfluxors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K25/00—Pulse counters with step-by-step integration and static storage; Analogous frequency dividers
    • 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
    • H03K3/45—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of non-linear magnetic or dielectric devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
    • H04B14/044—Sample and hold circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/14—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

847,334. Circuits employing bi-stable magnetic elements. STANDARD TELEPHONES & CABLES Ltd. Nov. 13, 1958, No. 36489/58. Class 40 (9). [Also in Group XL (c)] In a circuit in which a group of bi-stable magnetic cores are biased to different extents so that only one core at any time has its bias substantially cancelled by the instantaneous level of an amplitude-modulated signal, and in which the core so influenced by the instantaneous level is switched by a periodically-applied triggering pulse so as to produce an identifying output pulse, each core such as 1, 3, Fig. 1, is paired with an auxiliary core 2, 4 and the respective output windings 8 are connected in series opposition, the arrangement causing the spurious outputs produced by both cores of a pair when the signal level fluctuates in the periods between triggering pulses to neutralize each other in the output circuit. The circuit may be applied to a coder in which sampling of the amplitude modulated signal is being effected at periodic intervals by a trigger core 15 applying a triggering pulse to windings 5. The energy content of a triggering pulse is only sufficient to change the magnetic state of the main core 1, 3 in which the signal and bias currents substantially neutralize each other. Since the trigger and output windings 5, 8 are wound in opposite respects on the main and auxiliary cores forming a pair, while the signal and bias windings 6, 7 are wound in the same sense, the triggering pulse is without effect on the auxiliary core. As described in the prior Specification, the trigger core 15 is controlled by a sinusoidal voltage from a sampling source 13, and the signal and bias currents are derived from sources 9 and 10 respectively. The main and auxiliary cores of a pair may be constituted by a single ferrite ring 18, Fig. 4, formed with a radial aperture 18, the signal and bias windings 6, 7 encircling the whole structure, while the trigger and output windings 5, 8 are threaded together through the aperture as shown so as to form two separate windings around each of two magnetic flux paths corresponding to the cores 1 and 2.
GB36489/58A 1958-07-03 1958-11-13 Improvements in or relating to magnetic trigger devices Expired GB847334A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US840770A US3181001A (en) 1958-11-13 1959-09-17 Magnetic trigger devices
CH8038459A CH387100A (en) 1958-11-13 1959-11-09 Trigger device, for example for coding devices
NL245274D NL245274A (en) 1958-07-03 1959-11-12
BE584582A BE584582A (en) 1958-11-13 1959-11-13 Improvements to magnetic tripping devices.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB21295/58A GB849894A (en) 1958-07-03 1958-07-03 Improvements in or relating to magnetic information storage arrangements
GB33933/58A GB849895A (en) 1958-07-03 1958-10-23 Improvements in or relating to magnetic information storage arrangements
GB6659/59A GB849896A (en) 1958-07-03 1959-02-26 Improvements in or relating to coders and decoders for pulse code modulation systems
GB15660/60A GB900366A (en) 1960-05-04 1960-05-04 Improvements in or relating to electrical storage and gating arrangements

Publications (1)

Publication Number Publication Date
GB847334A true GB847334A (en) 1960-09-07

Family

ID=32475555

Family Applications (2)

Application Number Title Priority Date Filing Date
GB36489/58A Expired GB847334A (en) 1958-07-03 1958-11-13 Improvements in or relating to magnetic trigger devices
GB6659/59A Expired GB849896A (en) 1958-07-03 1959-02-26 Improvements in or relating to coders and decoders for pulse code modulation systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB6659/59A Expired GB849896A (en) 1958-07-03 1959-02-26 Improvements in or relating to coders and decoders for pulse code modulation systems

Country Status (5)

Country Link
US (2) US3069641A (en)
CH (1) CH378949A (en)
DE (1) DE1223879B (en)
GB (2) GB847334A (en)
NL (4) NL248777A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3181001A (en) * 1958-11-13 1965-04-27 Int Standard Electric Corp Magnetic trigger devices
US3296455A (en) * 1962-08-15 1967-01-03 Bell Telephone Labor Inc Bistable magnetic core circuit
US3387264A (en) * 1964-07-29 1968-06-04 Allen Bradley Co Time division multiplexer having synchronized magnetic core transmitter and receiver

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1849485A (en) * 1930-02-15 1932-03-15 Westinghouse Electric & Mfg Co Transformer
US2284401A (en) * 1940-08-27 1942-05-26 Bell Telephone Labor Inc Modulation circuit
US2696347A (en) * 1953-06-19 1954-12-07 Rca Corp Magnetic switching circuit
US2768367A (en) * 1954-12-30 1956-10-23 Rca Corp Magnetic memory and magnetic switch systems
US2913596A (en) * 1957-08-05 1959-11-17 Gen Electric Magnetic frequency converter

Also Published As

Publication number Publication date
US3110895A (en) 1963-11-12
NL244645A (en)
NL264359A (en) 1964-06-10
DE1223879B (en) 1966-09-01
GB849896A (en) 1960-09-28
NL248777A (en) 1964-03-10
US3069641A (en) 1962-12-18
CH378949A (en) 1964-06-30
NL253229A (en) 1964-03-25

Similar Documents

Publication Publication Date Title
GB821946A (en) Improvements in circuits employing bi-stable ferromagnetic elements
GB817252A (en) Magnetic device of the transfluxor type
GB1226697A (en)
GB847334A (en) Improvements in or relating to magnetic trigger devices
GB880088A (en) A microwave ferrite device
GB847224A (en) Improvements in or relating to electrical decision element circuits
GB886934A (en) Magnetic core switching devices
GB938131A (en) Improvements in or relating to relays having sealed contact devices
GB862855A (en) Improvements in or relating to coders for electric pulse code modulation systems
GB1003872A (en) A magnetic field detecting device
GB953176A (en) Improvements in or relating to monostable circuits
GB832585A (en) Improvements in signal translating devic í¡í¡ising magnetic cores
GB856014A (en) Improvements in or relating to electric gating devices
GB1022064A (en) Transfluxor amplifier circuit arrangement
GB830111A (en) Magnetic switching circuit
GB1000495A (en) Magnetic core switch
GB898741A (en) Improvements in or relating to bi-stable trigger circuits
GB890953A (en) Improvements in and relating to high order detector circuit
GB970751A (en)
GB1091514A (en) Circuit arrangement to compare two information items
GB858209A (en) Integrating device using transfluxors
GB1005581A (en) Phase shift type analog to digital converter
GB907492A (en) Delay circuits
GB801548A (en) Demodulator
GB850565A (en) Improvements in or relating to decoding equipment