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GB1311342A - Electrical plug-in circuit card - Google Patents

Electrical plug-in circuit card

Info

Publication number
GB1311342A
GB1311342A GB3415970A GB1311342DA GB1311342A GB 1311342 A GB1311342 A GB 1311342A GB 3415970 A GB3415970 A GB 3415970A GB 1311342D A GB1311342D A GB 1311342DA GB 1311342 A GB1311342 A GB 1311342A
Authority
GB
United Kingdom
Prior art keywords
gate
circuit
voltage
fet
power
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
GB3415970A
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.)
Plessey Co Ltd
Original Assignee
Plessey 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Publication of GB1311342A publication Critical patent/GB1311342A/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
    • H03K3/353—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of field-effect transistors with internal or external positive feedback

Landscapes

  • Power Sources (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

1311342 Semi-conductor switching circuits PLESSEY CO Ltd 8 June 1971 [14 July 1970] 34159/70 Heading H3T In order to set bi-stable M1, M2-for example to a predetermined state by conduction of M7, when power is initially applied to terminals 2, 3, of the circuit board carrying it, a FET M5, for example, is held initially non-conductive but turns on when a capacitor C charges through R1 to a preset level, this level being maintained to keep M7 off and the bi-stable responsive to trigger inputs (not shown) until the power is disconnected, whereupon D1 and R2 are enabled to discharge C. Modifications include a second supply voltage (6, Fig. 3, not shown) with a separate discharge circuit (D2, R3); and the use of bipolar FET's (Fig. 4, not shown) in a core-reading arrangement. In another embodiment (Fig. 5, not shown) the pad 9 in M5 gate circuit is dispensed with and two other pads used (9a, 9b), which are necessary for other non- simultaneous circuit functions; each has an OR gate ga gb in its path, and both OR gates receive the voltage from C, R1 so that the pads (9a, 9b) are energized simultaneously only by the switching voltage from C, R1. An AND gate q responds to this coincidence and earths M5 gate.
GB3415970A 1970-07-14 1970-07-14 Electrical plug-in circuit card Expired GB1311342A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3415970 1970-07-14

Publications (1)

Publication Number Publication Date
GB1311342A true GB1311342A (en) 1973-03-28

Family

ID=10362134

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3415970A Expired GB1311342A (en) 1970-07-14 1970-07-14 Electrical plug-in circuit card

Country Status (4)

Country Link
US (1) US3732442A (en)
CA (1) CA935232A (en)
GB (1) GB1311342A (en)
ZA (1) ZA713693B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4594688A (en) * 1981-09-10 1986-06-10 Nippon Electric Co., Ltd. Power supply circuit for flip-flop memory

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769528A (en) * 1972-12-27 1973-10-30 Ibm Low power fet driver circuit
US3802091A (en) * 1973-05-07 1974-04-09 Whirlpool Co D.c. shutdown circuitry for i.c controlled dryer
US3950654A (en) * 1974-11-14 1976-04-13 American Microsystems, Inc. Power-on initializing circuit for a calculator system
CA1079804A (en) * 1977-03-14 1980-06-17 Ibm Canada Limited - Ibm Canada Limitee Voltage sequencing circuit for sequencing voltage to an electrical device
US4194136A (en) * 1977-06-17 1980-03-18 Fairchild Camera And Instrument Corporation Input stage using junction field effect transistors for biasing
US4316102A (en) * 1977-06-17 1982-02-16 Fairchild Camera And Instrument Corp. Input stage using junction field effect transistors for biasing
US4268763A (en) * 1979-04-05 1981-05-19 Signetics Corporation Conditioning circuit for use with I2 L and ISL logic arrays embodying two power supplies
US4617476A (en) * 1984-10-16 1986-10-14 Zilog, Inc. High speed clocked, latched, and bootstrapped buffer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942123A (en) * 1956-01-31 1960-06-21 Westinghouse Electric Corp Time delay control device
US2976487A (en) * 1958-08-07 1961-03-21 Bell Telephone Labor Inc Stabilized timing circuit
US3045150A (en) * 1958-10-13 1962-07-17 Leach Corp Time delay circuit
US3189751A (en) * 1960-04-01 1965-06-15 Cons Electronics Ind Timing circuit
US3158790A (en) * 1961-10-31 1964-11-24 Hi G Inc Timing circuit
US3383623A (en) * 1964-10-28 1968-05-14 Westinghouse Electric Corp Pulse generators for phase controlled systems
US3378698A (en) * 1965-04-23 1968-04-16 Minnesota Mining & Mfg Pulse responsive control unit
DE1563460A1 (en) * 1966-10-21 1969-11-27 Standard Elektrik Lorenz Ag Circuit arrangement with controllable semiconductor rectifiers
CA855386A (en) * 1968-10-07 1970-11-03 Westinghouse Electric Corporation Overcurrent protective device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4594688A (en) * 1981-09-10 1986-06-10 Nippon Electric Co., Ltd. Power supply circuit for flip-flop memory

Also Published As

Publication number Publication date
US3732442A (en) 1973-05-08
CA935232A (en) 1973-10-09
ZA713693B (en) 1972-01-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee