GB989436A - Electrical pulse generating systems - Google Patents

Electrical pulse generating systems

Info

Publication number
GB989436A
GB989436A GB4909/62A GB490962A GB989436A GB 989436 A GB989436 A GB 989436A GB 4909/62 A GB4909/62 A GB 4909/62A GB 490962 A GB490962 A GB 490962A GB 989436 A GB989436 A GB 989436A
Authority
GB
United Kingdom
Prior art keywords
transistor
line
pulses
base
current pulse
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
GB4909/62A
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB989436A publication Critical patent/GB989436A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03K17/60—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 bipolar transistors
    • H03K17/62—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors
    • H03K17/6285—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors with several outputs only combined with selecting means
    • 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
    • H03K17/60—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 bipolar transistors
    • H03K17/66—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will
    • H03K17/661—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will connected to both load terminals
    • H03K17/662—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will connected to both load terminals each output circuit comprising more than one controlled bipolar transistor
    • 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
    • H03K17/74—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of diodes
    • H03K17/76—Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/74—Simultaneous conversion

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Electronic Switches (AREA)

Abstract

989,436. Electric selective signalling systems. INTERNATIONAL BUSINESS MACHINES CORPORATION. Feb. 8, 1962 [March 31, 1961], No. 4909/62. Heading G4H. [Also in Division H3] A circuit for driving a current pulse through an inductive line comprises a transistor having an emitter resistor and a base clamping device and having its collector connected to one end of the line and via a resistor to a reverse bias voltage so as to maintain the collector/base capacitance charged. As shown in Fig. 6, all transistors are normally non-conductive. When it is desired to pass a current pulse from right to left in line 1, a positive pulse is applied to the base of transistor T3 so that transistors T4, T5 are also made conductive. A negative pulse applied to the base of transistor T2 drives transistor T1 into conduction so that a constant current pulse travels in line 1 via diodes D1, D2. A current pulse may be driven from left to right by applying control pulses to transistors T<SP>1</SP>2 and T3<SP>1</SP>. Fig. 7 (not shown) relates to a storage matrix in which bipolar pulses may be driven through any one of thirty two lines under control of twelve voltage pulse generators and twelve current pulse generators. Reference is made to control of an n x m matrix by 2(#n + m) drivers. Simpler switching circuits are described (see Division H3). Digital-analogue conversion. Fig. 8 shows an arrangement in which current pulses can be driven in either direction along a selected one of lines 1, 11, 111. Transistors T1 are normally non-conductive; digital data pulses being applied to terminals Gi, the appropriate line being selected by voltage pulses applied to terminals Vg. The amplitude of current pulse in any line 1, 11, 111 is dependent on the values of emitter resistor Re or clamping voltage VX, so that these values are selected so that the constant current through any transistor T1 is weighted according to the value of digital data fed to its base. If more than one transistor T1 is made conductive, the current in the selected line is equal to the sum of transistor currents.
GB4909/62A 1961-03-31 1962-02-08 Electrical pulse generating systems Expired GB989436A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US99845A US3300772A (en) 1961-03-31 1961-03-31 Controlled current amplitude energizing system

Publications (1)

Publication Number Publication Date
GB989436A true GB989436A (en) 1965-04-14

Family

ID=22276879

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4909/62A Expired GB989436A (en) 1961-03-31 1962-02-08 Electrical pulse generating systems

Country Status (4)

Country Link
US (1) US3300772A (en)
DE (1) DE1156106B (en)
FR (1) FR1320048A (en)
GB (1) GB989436A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3492500A (en) * 1966-08-05 1970-01-27 Foringer & Co Inc Solid state control modules having optimized compatibility with electromechanical components and systems
US3519851A (en) * 1967-05-26 1970-07-07 Corning Glass Works Driver for bipolar capacitive loads

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2784396A (en) * 1953-04-02 1957-03-05 Hughes Aircraft Co High-speed electronic analogue-todigital converter system
US2835828A (en) * 1953-08-07 1958-05-20 Bell Telephone Labor Inc Regenerative transistor amplifiers
US2831985A (en) * 1955-07-28 1958-04-22 Sperry Rand Corp Amplifier with feedback
US2969535A (en) * 1957-08-29 1961-01-24 Bell Telephone Labor Inc Analog-digital interconversion circuitry
US3185858A (en) * 1959-07-08 1965-05-25 North American Aviation Inc Bi-directional constant current device
US3174055A (en) * 1960-11-03 1965-03-16 Ibm Pulse shaper and differentiator

Also Published As

Publication number Publication date
US3300772A (en) 1967-01-24
FR1320048A (en) 1963-03-08
DE1156106B (en) 1963-10-24

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