BE861926A - Circuit electrique pour la commande d'alarmes sonores - Google Patents

Circuit electrique pour la commande d'alarmes sonores

Info

Publication number
BE861926A
BE861926A BE183515A BE183515A BE861926A BE 861926 A BE861926 A BE 861926A BE 183515 A BE183515 A BE 183515A BE 183515 A BE183515 A BE 183515A BE 861926 A BE861926 A BE 861926A
Authority
BE
Belgium
Prior art keywords
electrical circuit
audible alarms
alarms control
control
audible
Prior art date
Application number
BE183515A
Other languages
English (en)
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of BE861926A publication Critical patent/BE861926A/fr

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
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
    • H03K3/288—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable using additional transistors in the input circuit
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • 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
BE183515A 1976-12-17 1977-12-16 Circuit electrique pour la commande d'alarmes sonores BE861926A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/751,882 US4079271A (en) 1976-12-17 1976-12-17 Alarm driver for a smoke detector

Publications (1)

Publication Number Publication Date
BE861926A true BE861926A (fr) 1978-04-14

Family

ID=25023912

Family Applications (1)

Application Number Title Priority Date Filing Date
BE183515A BE861926A (fr) 1976-12-17 1977-12-16 Circuit electrique pour la commande d'alarmes sonores

Country Status (9)

Country Link
US (1) US4079271A (fr)
JP (1) JPS5394800A (fr)
AU (1) AU504991B2 (fr)
BE (1) BE861926A (fr)
CA (1) CA1096450A (fr)
DE (1) DE2755670A1 (fr)
FR (1) FR2374706A1 (fr)
GB (1) GB1587740A (fr)
NL (1) NL7714016A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496849A (en) * 1982-02-22 1985-01-29 General Motors Corporation Power transistor protection from substrate injection
US4511809A (en) * 1983-01-27 1985-04-16 Motorola, Inc. Switch circuit having improved switching characteristics
US5077756A (en) * 1990-05-31 1991-12-31 Acculan Ltd. Data network line driver
EP0578098B1 (fr) * 1992-07-07 1996-09-04 Siemens Aktiengesellschaft circuit de commande intégré pour une charge réactive
US5990797A (en) * 1997-03-04 1999-11-23 Bkk Brands, Inc. Ultraloud smoke detector
US6509838B1 (en) * 2000-02-08 2003-01-21 Peter P. Payne Constant current flame ionization circuit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1200362B (de) * 1960-09-03 1965-09-09 Telefunken Patent Schaltungsanordnung zur Auswahl eines Verbrauchers
US3237125A (en) * 1962-11-14 1966-02-22 Honeywell Inc Frequency stabilized saturable core oscillator
US3473051A (en) * 1966-02-08 1969-10-14 Sylvania Electric Prod Bistable logic circuit
US3538353A (en) * 1967-10-13 1970-11-03 Gen Electric Switching circuit
US3569745A (en) * 1968-11-06 1971-03-09 Sylvania Electric Prod Transistor logic circuit
US3684983A (en) * 1970-06-19 1972-08-15 E & M Lab High speed circulator switch
US3770986A (en) * 1972-04-20 1973-11-06 Hewlett Packard Co Switching circuit for inductive loads

Also Published As

Publication number Publication date
FR2374706A1 (fr) 1978-07-13
JPS5394800A (en) 1978-08-19
AU3098477A (en) 1979-05-31
DE2755670A1 (de) 1978-06-22
AU504991B2 (en) 1979-11-01
US4079271A (en) 1978-03-14
NL7714016A (nl) 1978-06-20
GB1587740A (en) 1981-04-08
CA1096450A (fr) 1981-02-24

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