US3128456A - Annunciators with manual reset - Google Patents

Annunciators with manual reset Download PDF

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Publication number
US3128456A
US3128456A US635529A US63552957A US3128456A US 3128456 A US3128456 A US 3128456A US 635529 A US635529 A US 635529A US 63552957 A US63552957 A US 63552957A US 3128456 A US3128456 A US 3128456A
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US
United States
Prior art keywords
transistor
flip
flop
alarm
individual
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 - Lifetime
Application number
US635529A
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English (en)
Inventor
Sheldon D Silliman
John F Reuther
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CBS Corp
Original Assignee
Westinghouse Electric 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
Priority to BE563463D priority Critical patent/BE563463A/xx
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US635529A priority patent/US3128456A/en
Priority to GB38189/57A priority patent/GB856724A/en
Priority to DEW22542A priority patent/DE1091910B/de
Priority to CH5483058A priority patent/CH365309A/de
Application granted granted Critical
Publication of US3128456A publication Critical patent/US3128456A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/14—Central alarm receiver or annunciator arrangements
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions

Definitions

  • Our invention relates generally to alarm and indicating apparatus, and has reference in particular to annunciators.
  • Yet another object of our invention is to provide in an annunciator for connecting an amplifier to the off output circuit of a flip-flop to obtain an on output signal.
  • each drop of a static annunciator comprises an individual direct-coupled transistor flip-flop circuit which is triggered to the on condition by an associated trouble contact and operates to trigger separate lamp and alarm amplifiers for the drop.
  • a common alarm flip-flop is triggered by the individual alarm amplifier to sound an audible alarm.
  • a common reset circuit interrupts the base circuit of the individual flip-flop to reset it and turn the lamp off. Reset of the common alarm flip-flop is effected by operating a reset switch to ground the base of the saturated transistor thereof.
  • a flip-flop is a circuit which provides an on output signal in response to a first condition, which output signal continues even though said first condition ceases to exist, and terminates said output signal and pro Jerusalem an off output signal in response to a second condition.
  • FIG. 2 is a schematic diagram of a modification of the invention shown in FIG. 1;
  • the reference numeral 10 may denote generally an annunciator system wherein a plurality of trouble contacts represented by the contacts TC1 and TC2 are associated with the individual drops 12 and 13 of the annunciator for operating trouble lamps L1 and L2 individual to the drops, as well as effecting operation of a common alarm means 15.
  • a capacitor 22 is connected in shunt with the resistor 16 so that the charging current thereof, when the flip-flop is connected to the source, provides sufficient base current for the transistor T2 to become saturated.
  • the emitters e are connected to ground, the emitter e of transistor T1 being connected to a common lamp reset bus 23, which is connected to the ground conductor 18 through a lamp reset switch 25, which may be opened to lift the emitters e from ground and effect saturation of transistor T2 to trigger the flipflop FF1 back to its initial condition after it has been triggered to the on condition by the closing of the trouble contact TC1.
  • the indicating lamp L1 may be connected to the source by a transistor T4 which is connected in series therewith.
  • the base electrode 11 of the transistor T4 is connected to the collector c of a NOT amplifier, comprising a transistor T3 which is connected to the source through a resistor 27.
  • Control of the indicating lamp L1 is effected by connecting the base electrode b of the transistor T3 to the collector c of transistor T1, so that when the flip-flop FF1 is triggered to the on condition by the closing of the trouble contact TC1, the absence of an off output signal at the collector of transistor T1 will produce an output signal at the collector c of transistor T3, so as to effect saturation of the indicating lamp transistor T4.
  • This signal is also applied to the base b of an alarm control transistor T5 which is connected to discharge a capacitor 30 and apply a control pulse to an alarm bus 31 through a rectifier device 32 for effecting operation of the alarm means 15.
  • a resistor 28 connects capacitor 30 to conductor 18 for slowly charging it when transistor T5 is blocked.
  • the indicating lamp flip-flop FFI goes to the off condition since the capacitor 22 effects saturation of the transistor T2, making the transistor T1 cut off, so that the collector c thereof is at the same potential as the base b of T2.
  • This voltage is applied to the base b of the NOT amplifier T3 to eflect saturation thereof. Accordingly, the collector c of transistor T3 will be dropped to substantially ground potential so that the base b of transistor T4 is grounded, causing transistor T4 to out 011, so that the lamp L1 is deenergized.
  • Transistor T5 is likewise cut off, and the capacitor 30 is slowly charged through a resistor 28 and the collector resistor 33 of the transistor T5.
  • the flip-flop FFZ initially goes to the on condition, since capacitor 37 momentarily provides sufficient base current for the transistor T11 to effect saturation. Accordingly, transistor T12 is cut off, and the collector c thereof is at the same potential as base b of transistor T11. Accordingly, this voltage is applied to the base b of transistor T13, causing it to saturate. This causes transistor T14 to cut oh, so that base b of transistor T15 is raised to the voltage of the collector c of transistor T14 causing transistor T15 to saturate.
  • the alarm relay 40 is thereby connected between the conductors 18 and 20 through the low impedance of the saturated transistor T15, and 1s operated.
  • the voltage of the base of transistor T4 is applied to the base electrode b of transistor T5, causing it to saturate and connect the capacitor 30 to ground at conductor 18, so that the capacitor voltage is made available at the alarm bus 31 through the rectifier device 32.
  • a common alarm device operable from one stable condition to another condition to effect energization of the alarm device, a plurality of indicating devices, a flip-flop individual to each indicating device operable from one stable condition to another condition to apply a signal to the indicating device and trigger said first mentioned common flip-flop to said another condition, energy storage means connected in circuit between said individual flip-flops and the common flip-flop, reset means common to the individual flip-flops, and additional reset means individual to the common flip-flop.
  • An annunciator comprising an alarm device, a fliprlop individual to the alarm device, a plurality of indicating devices, a flip-flop individual to each indicating device, switch means effecting operation of each of the individual flip-flops, means for resetting the individual fiipflops, and capacitor means connecting the individual flipfiops to the alarm device flip-flop.
  • an alarm In an annunciator, an alarm, a flip-flop having two stable states including an off state during which a voltage is produced at an off terminal and an on state during which no voltage is produced at the off terminal, an indicator, switch means for the indicator, another flip-lop having an off stable state and operable to an on stable state to apply a voltage to effect operation of the alarm, and a NOT amplifier connected to respond to the lack of an oif signal at said one flip-flop to effect energization of the alarm flip-flop and the indicator switch means.
  • an indicating lamp a transistor having a base electrode with collector and emitter electrodes connected in series with the lamp and a source, an impedance, an additional transistor having a base electrode with collector and emitter electrodes connected in series with the impedance and the source, circuit means connecting the collector of the additional transistor to the base of the first mentioned transistor, a flip-flop comprising two transistors having base electrodes with emitter and collector electrodes, circuit means cross-connecting the base and collector electrodes, impedance means connecting the collector electrodes to the negative side of the source, additional circuit means connecting the emitter electrodes to the positive side of the source, a capacitor connected in shunt with .the impedance means of one of the fliptfiop transistors, circuit means connecting the collector electrode of one of said two transistors to the base electrode of the additional transistor, and a switch for con necting the collector and emitter electrodes of said one transistor.
  • an indicating lamp an alarm
  • a flip-flop having two stable states operable in one of said states to effect operation of the alarm
  • an additional flipflop having two stable states operable in one of said states to effect energization of the indicating lamp and trigger the first mentioned flip-flop to said one state
  • a control relay and contact means operable to simultaneously effect operation of the control relay and the additional flip-flop.
  • a flip-flop operable from one stable state to another to operate an alarm, indicating means, an additional flip-flop operable from one stable state to another to effect energization of the indicating means and tnigger the alarm fiip-flop to said another state
  • said additional flip-flop including two transistors with direct-connected emitters and cross-connected collectors and base electrodes, circuit means connecting the two transistors in common-emitter relationship with a direct current source, switch means connected between the emitter of one of said two transistors and the direct cur rent source operable to reset the additional flip-flop to its one state, and additional reset means to reset the alarm flip-flop to its one stable state.
  • a flip-flop circuit operable from one stable state to another to operate an alarm
  • a plurality of indicator means a plurality of additional flip-flop circuits each operable from one stable state to another to effect energization of one of the indicating means and each connected to trigger the alarm flip-flop to said another state
  • each additional flip-flop including a pair of transistors with direct-connected emitters and cross-connected collectors and base electrodes, circuit means connecting the collector and emitter of each transistor in commonemitter relationship with a direct current source and including means connecting the emitter of one transistor of each pair of transistors to a common point and including switch means connecting said common point to the direct current source, and additional reset means to change the alarm flip-flop to its one stable state.

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Emergency Alarm Devices (AREA)
US635529A 1957-01-22 1957-01-22 Annunciators with manual reset Expired - Lifetime US3128456A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE563463D BE563463A (da) 1957-01-22
US635529A US3128456A (en) 1957-01-22 1957-01-22 Annunciators with manual reset
GB38189/57A GB856724A (en) 1957-01-22 1957-12-09 Improvements in or relating to annunciators
DEW22542A DE1091910B (de) 1957-01-22 1958-01-11 Stoerungsmelder
CH5483058A CH365309A (de) 1957-01-22 1958-01-18 Störungsmelder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US635529A US3128456A (en) 1957-01-22 1957-01-22 Annunciators with manual reset

Publications (1)

Publication Number Publication Date
US3128456A true US3128456A (en) 1964-04-07

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ID=24548152

Family Applications (1)

Application Number Title Priority Date Filing Date
US635529A Expired - Lifetime US3128456A (en) 1957-01-22 1957-01-22 Annunciators with manual reset

Country Status (5)

Country Link
US (1) US3128456A (da)
BE (1) BE563463A (da)
CH (1) CH365309A (da)
DE (1) DE1091910B (da)
GB (1) GB856724A (da)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212079A (en) * 1961-03-18 1965-10-12 Eberle & Kohler Kommanditgesel Signalling arrangement
US3264626A (en) * 1963-08-01 1966-08-02 Sioc Ltd Alarm system
US3271754A (en) * 1963-07-09 1966-09-06 Johnson Service Co Monitoring system
US3273138A (en) * 1964-04-28 1966-09-13 Sonus Corp Swimming pool monitor
US3286250A (en) * 1964-10-16 1966-11-15 Teitelbaum Menashe Burglar alarm utilizing bi-stable electronic switches
US3287717A (en) * 1962-07-30 1966-11-22 Compudyne Corp Static annunciator with acknowledgment and ring back
US3357008A (en) * 1964-03-17 1967-12-05 All American Eng Co Automatic alarm annunciator circuits
US3392379A (en) * 1964-10-05 1968-07-09 Monsanto Co Static logic annunciator
US3449738A (en) * 1966-06-15 1969-06-10 Jeron Electronics Inc Electronic security system
US3457559A (en) * 1965-11-26 1969-07-22 Warren L Spielman Electronic annunciator means
US3550111A (en) * 1966-08-16 1970-12-22 Harold D Ervin Security alarm system
US3550122A (en) * 1967-06-26 1970-12-22 Inamur Rab Siddiqi Dual point annunciator system
US3631432A (en) * 1970-01-14 1971-12-28 John Stallebrass Annunciator unit for use in a fault warning system

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL269379A (da) * 1960-09-19
NL271406A (da) * 1960-11-16
DE1223725B (de) * 1961-10-28 1966-08-25 Eberle & Koehler K G Anordnung zur Fernanzeige der AEnderung beliebiger physikalischer Groessen
DE1150910B (de) * 1961-06-27 1963-06-27 Diehl Fa Stellungsanzeigegeraet
DE1278888B (de) * 1962-07-02 1968-09-26 Elektro App Werke Berlin Trept Schaltungsanordnung aus logischen Elementen zur Signalisierung von Zustandsaenderungen, insbesondere von Anlagen- und Prozessstoerungen
DE1441449B1 (de) * 1962-07-09 1971-12-30 Isi Inc Stoerungsmelder
DE1261556B (de) * 1964-04-24 1968-02-22 Neumann Elektronik Gmbh Rufspeicher mit Blinksignalanlage fuer Fernmeldeanlagen, insbesondere Wechselsprechanlagen
DE2005745C3 (de) * 1970-02-09 1984-06-28 ANT Nachrichtentechnik GmbH, 7150 Backnang Schaltungsanordnung für die Speicherung der Kennzeichnung von Anrufen in zentralen Vermittlungsstellen von Wechselsprechanlagen

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2168805A (en) * 1936-05-07 1939-08-08 Union Switch & Signal Co Signaling apparatus
US2309174A (en) * 1940-11-23 1943-01-26 Union Switch & Signal Co Indicating apparatus
US2709250A (en) * 1952-11-14 1955-05-24 Panellit Inc Alarm and annunciator system
US2709249A (en) * 1952-10-02 1955-05-24 Panellit Inc Instrument units for process alarm systems
US2712129A (en) * 1955-06-28 marmorstone
US2719966A (en) * 1951-11-01 1955-10-04 Electric Controller & Mfg Co Electronic annunciator
US2730704A (en) * 1955-02-14 1956-01-10 Howard C Warren Annunciator system
US2776420A (en) * 1954-11-01 1957-01-01 Rca Corp Transistor indicator circuits
US2816237A (en) * 1955-05-31 1957-12-10 Hughes Aircraft Co System for coupling signals into and out of flip-flops
US2832948A (en) * 1956-03-09 1958-04-29 Westinghouse Electric Corp Static annunciator
US2917731A (en) * 1958-05-23 1959-12-15 George H Rodgers Multiple indicator system with resettable warning signal
US2947980A (en) * 1957-01-08 1960-08-02 Information Systems Inc Alarm system
US2954484A (en) * 1956-02-13 1960-09-27 Gen Precision Inc Direct coupled transistor flip-flop
US3008055A (en) * 1955-03-29 1961-11-07 Sperry Rand Corp Bistable circuits having unidirectional feedback means

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2712129A (en) * 1955-06-28 marmorstone
US2168805A (en) * 1936-05-07 1939-08-08 Union Switch & Signal Co Signaling apparatus
US2309174A (en) * 1940-11-23 1943-01-26 Union Switch & Signal Co Indicating apparatus
US2719966A (en) * 1951-11-01 1955-10-04 Electric Controller & Mfg Co Electronic annunciator
US2709249A (en) * 1952-10-02 1955-05-24 Panellit Inc Instrument units for process alarm systems
US2709250A (en) * 1952-11-14 1955-05-24 Panellit Inc Alarm and annunciator system
US2776420A (en) * 1954-11-01 1957-01-01 Rca Corp Transistor indicator circuits
US2730704A (en) * 1955-02-14 1956-01-10 Howard C Warren Annunciator system
US3008055A (en) * 1955-03-29 1961-11-07 Sperry Rand Corp Bistable circuits having unidirectional feedback means
US2816237A (en) * 1955-05-31 1957-12-10 Hughes Aircraft Co System for coupling signals into and out of flip-flops
US2954484A (en) * 1956-02-13 1960-09-27 Gen Precision Inc Direct coupled transistor flip-flop
US2832948A (en) * 1956-03-09 1958-04-29 Westinghouse Electric Corp Static annunciator
US2947980A (en) * 1957-01-08 1960-08-02 Information Systems Inc Alarm system
US2917731A (en) * 1958-05-23 1959-12-15 George H Rodgers Multiple indicator system with resettable warning signal

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212079A (en) * 1961-03-18 1965-10-12 Eberle & Kohler Kommanditgesel Signalling arrangement
US3287717A (en) * 1962-07-30 1966-11-22 Compudyne Corp Static annunciator with acknowledgment and ring back
US3271754A (en) * 1963-07-09 1966-09-06 Johnson Service Co Monitoring system
US3264626A (en) * 1963-08-01 1966-08-02 Sioc Ltd Alarm system
US3357008A (en) * 1964-03-17 1967-12-05 All American Eng Co Automatic alarm annunciator circuits
US3273138A (en) * 1964-04-28 1966-09-13 Sonus Corp Swimming pool monitor
US3392379A (en) * 1964-10-05 1968-07-09 Monsanto Co Static logic annunciator
US3286250A (en) * 1964-10-16 1966-11-15 Teitelbaum Menashe Burglar alarm utilizing bi-stable electronic switches
US3457559A (en) * 1965-11-26 1969-07-22 Warren L Spielman Electronic annunciator means
US3449738A (en) * 1966-06-15 1969-06-10 Jeron Electronics Inc Electronic security system
US3550111A (en) * 1966-08-16 1970-12-22 Harold D Ervin Security alarm system
US3550122A (en) * 1967-06-26 1970-12-22 Inamur Rab Siddiqi Dual point annunciator system
US3631432A (en) * 1970-01-14 1971-12-28 John Stallebrass Annunciator unit for use in a fault warning system

Also Published As

Publication number Publication date
DE1091910B (de) 1960-10-27
CH365309A (de) 1962-10-31
BE563463A (da)
GB856724A (en) 1960-12-21

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