BE841114A - MOBILE ELECTRONIC SYSTEM, PROVIDING A POLICE SIREN TYPE ELECTRO-ACOUSTIC ALARM SIGNAL - Google Patents

MOBILE ELECTRONIC SYSTEM, PROVIDING A POLICE SIREN TYPE ELECTRO-ACOUSTIC ALARM SIGNAL

Info

Publication number
BE841114A
BE841114A BE166450A BE166450A BE841114A BE 841114 A BE841114 A BE 841114A BE 166450 A BE166450 A BE 166450A BE 166450 A BE166450 A BE 166450A BE 841114 A BE841114 A BE 841114A
Authority
BE
Belgium
Prior art keywords
providing
alarm signal
electronic system
mobile electronic
type electro
Prior art date
Application number
BE166450A
Other languages
French (fr)
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 filed Critical
Publication of BE841114A publication Critical patent/BE841114A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits
    • B06B1/0223—Driving circuits for generating signals continuous in time
    • B06B1/0269—Driving circuits for generating signals continuous in time for generating multiple frequencies
    • B06B1/0284—Driving circuits for generating signals continuous in time for generating multiple frequencies with consecutive, i.e. sequential generation, e.g. with frequency sweep
    • 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/02—Synthesis of acoustic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
BE166450A 1975-04-26 1976-04-26 MOBILE ELECTRONIC SYSTEM, PROVIDING A POLICE SIREN TYPE ELECTRO-ACOUSTIC ALARM SIGNAL BE841114A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2518708A DE2518708B1 (en) 1975-04-26 1975-04-26 Mobile electro-acoustic alarm system, so-called electronic police horn

Publications (1)

Publication Number Publication Date
BE841114A true BE841114A (en) 1976-08-16

Family

ID=5945114

Family Applications (1)

Application Number Title Priority Date Filing Date
BE166450A BE841114A (en) 1975-04-26 1976-04-26 MOBILE ELECTRONIC SYSTEM, PROVIDING A POLICE SIREN TYPE ELECTRO-ACOUSTIC ALARM SIGNAL

Country Status (5)

Country Link
BE (1) BE841114A (en)
DE (1) DE2518708B1 (en)
FR (1) FR2309006A1 (en)
NL (1) NL7604329A (en)
NO (1) NO761392L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2829404C2 (en) * 1978-07-05 1986-11-13 Becker Autoradiowerk Gmbh, 7516 Karlsbad Electronic circuit arrangement for generating a periodic signal tone sequence from at least two frequencies
DE2847208C2 (en) * 1978-10-30 1983-11-24 Siegas Metallwarenfabrik Wilhelm Loh Gmbh & Co Kg, 5900 Siegen Control circuit for a vibratory electromechanical system
DE2936981C2 (en) * 1979-09-13 1985-08-22 Wandel & Goltermann Gmbh & Co, 7412 Eningen Warning signal generator with a high proportion of harmonics to feed a pressure chamber loudspeaker
DE3420988A1 (en) * 1984-06-06 1985-12-12 Robert Bosch Gmbh, 7000 Stuttgart Electronic warning signal system especially for motor vehicles
FR2631505B1 (en) * 1988-05-11 1990-08-31 Neiman Sa DEVICE FOR POWERING A LOUDSPEAKER OF ACOUSTIC SIGNALING

Also Published As

Publication number Publication date
DE2518708B1 (en) 1976-02-26
NL7604329A (en) 1976-10-28
FR2309006B3 (en) 1979-01-19
NO761392L (en) 1976-10-27
FR2309006A1 (en) 1976-11-19

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