PT71642B - Schaltungsanordnung zum ansteuern eines signallautsprechers - Google Patents

Schaltungsanordnung zum ansteuern eines signallautsprechers

Info

Publication number
PT71642B
PT71642B PT71642A PT7164280A PT71642B PT 71642 B PT71642 B PT 71642B PT 71642 A PT71642 A PT 71642A PT 7164280 A PT7164280 A PT 7164280A PT 71642 B PT71642 B PT 71642B
Authority
PT
Portugal
Prior art keywords
controlling
circuit arrangement
signal speaker
speaker
signal
Prior art date
Application number
PT71642A
Other languages
English (en)
Portuguese (pt)
Other versions
PT71642A (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
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of PT71642A publication Critical patent/PT71642A/de
Publication of PT71642B publication Critical patent/PT71642B/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Circuit For Audible Band Transducer (AREA)
PT71642A 1979-08-02 1980-08-01 Schaltungsanordnung zum ansteuern eines signallautsprechers PT71642B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2931437A DE2931437C2 (de) 1979-08-02 1979-08-02 Schaltungsanordnung zum Ansteuern eines Signallautsprechers

Publications (2)

Publication Number Publication Date
PT71642A PT71642A (de) 1980-09-01
PT71642B true PT71642B (de) 1981-06-26

Family

ID=6077496

Family Applications (1)

Application Number Title Priority Date Filing Date
PT71642A PT71642B (de) 1979-08-02 1980-08-01 Schaltungsanordnung zum ansteuern eines signallautsprechers

Country Status (8)

Country Link
EP (1) EP0023697A1 (de)
DE (1) DE2931437C2 (de)
DK (1) DK332580A (de)
ES (1) ES8104699A1 (de)
FI (1) FI802425A (de)
NO (1) NO802295L (de)
PT (1) PT71642B (de)
YU (1) YU191380A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4797932A (en) * 1987-11-23 1989-01-10 Ncr Corporation Speaker volume control apparatus and method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466649A (en) * 1966-03-01 1969-09-09 Gen Alarm Corp Multiple alarm system
US3657568A (en) * 1970-01-05 1972-04-18 Hamilton Watch Co Pulse shaping circuit using complementary mos devices
US3686666A (en) * 1970-05-11 1972-08-22 Xerox Corp Interrupted pulsing circuit for audible signaling
US3675133A (en) * 1971-06-21 1972-07-04 Ibm Apparatus and method independently varying the widths of a plurality of pulses
DE2554219A1 (de) * 1975-12-03 1977-06-16 Standard Elektrik Lorenz Ag Schaltungsanordnung fuer einen akustischen signalgeber

Also Published As

Publication number Publication date
DE2931437B1 (de) 1980-12-11
FI802425A (fi) 1981-02-03
PT71642A (de) 1980-09-01
DK332580A (da) 1981-02-03
ES493896A0 (es) 1981-04-01
DE2931437C2 (de) 1981-09-24
EP0023697A1 (de) 1981-02-11
ES8104699A1 (es) 1981-04-01
NO802295L (no) 1981-02-03
YU191380A (en) 1983-09-30

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