AT322412B - CIRCUIT ARRANGEMENT FOR REQUESTING DC OR LOW FREQUENCY AC SIGNALS - Google Patents

CIRCUIT ARRANGEMENT FOR REQUESTING DC OR LOW FREQUENCY AC SIGNALS

Info

Publication number
AT322412B
AT322412B AT435272A AT435272A AT322412B AT 322412 B AT322412 B AT 322412B AT 435272 A AT435272 A AT 435272A AT 435272 A AT435272 A AT 435272A AT 322412 B AT322412 B AT 322412B
Authority
AT
Austria
Prior art keywords
requesting
signals
low frequency
circuit arrangement
arrangement
Prior art date
Application number
AT435272A
Other languages
German (de)
Original Assignee
Siemens Ag
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 claimed from DE19712132617 external-priority patent/DE2132617C3/en
Application filed by Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of AT322412B publication Critical patent/AT322412B/en

Links

Classifications

    • 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

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
AT435272A 1971-06-30 1972-05-18 CIRCUIT ARRANGEMENT FOR REQUESTING DC OR LOW FREQUENCY AC SIGNALS AT322412B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712132617 DE2132617C3 (en) 1971-06-30 Circuit arrangement for querying direct current or low-frequency alternating current signals

Publications (1)

Publication Number Publication Date
AT322412B true AT322412B (en) 1975-05-26

Family

ID=5812294

Family Applications (1)

Application Number Title Priority Date Filing Date
AT435272A AT322412B (en) 1971-06-30 1972-05-18 CIRCUIT ARRANGEMENT FOR REQUESTING DC OR LOW FREQUENCY AC SIGNALS

Country Status (3)

Country Link
AT (1) AT322412B (en)
FR (1) FR2143632B1 (en)
IT (1) IT956793B (en)

Also Published As

Publication number Publication date
DE2132617B2 (en) 1977-01-13
IT956793B (en) 1973-10-10
FR2143632A1 (en) 1973-02-09
FR2143632B1 (en) 1977-01-28
DE2132617A1 (en) 1973-01-18

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee