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AU500670B2 - Alarm circuit - Google Patents

Alarm circuit

Info

Publication number
AU500670B2
AU500670B2 AU86252/75A AU8625275A AU500670B2 AU 500670 B2 AU500670 B2 AU 500670B2 AU 86252/75 A AU86252/75 A AU 86252/75A AU 8625275 A AU8625275 A AU 8625275A AU 500670 B2 AU500670 B2 AU 500670B2
Authority
AU
Australia
Prior art keywords
alarm circuit
alarm
circuit
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
AU86252/75A
Other versions
AU8625275A (en
Inventor
K Eshraghian
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.)
Philips Industries Pty Ltd
Original Assignee
Philips Industries Pty 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 Philips Industries Pty Ltd filed Critical Philips Industries Pty Ltd
Priority to AU86252/75A priority Critical patent/AU500670B2/en
Publication of AU8625275A publication Critical patent/AU8625275A/en
Application granted granted Critical
Publication of AU500670B2 publication Critical patent/AU500670B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/15—Indicating that frequency of pulses is either above or below a predetermined value or within or outside a predetermined range of values, by making use of non-linear or digital elements (indicating that pulse width is above or below a certain limit)
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16585—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 for individual pulses, ripple or noise and other applications where timing or duration is of importance
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
AU86252/75A 1974-11-04 1974-11-04 Alarm circuit Expired AU500670B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU86252/75A AU500670B2 (en) 1974-11-04 1974-11-04 Alarm circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU86252/75A AU500670B2 (en) 1974-11-04 1974-11-04 Alarm circuit

Publications (2)

Publication Number Publication Date
AU8625275A AU8625275A (en) 1977-05-05
AU500670B2 true AU500670B2 (en) 1979-05-31

Family

ID=3762615

Family Applications (1)

Application Number Title Priority Date Filing Date
AU86252/75A Expired AU500670B2 (en) 1974-11-04 1974-11-04 Alarm circuit

Country Status (1)

Country Link
AU (1) AU500670B2 (en)

Also Published As

Publication number Publication date
AU8625275A (en) 1977-05-05

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