IT1120506B - IMPROVEMENT IN CIRCUIT PROVISIONS WITHOUT CONTACT ELEMENTS FOR SUITABLE ACOUSTIC SIGNALS - Google Patents

IMPROVEMENT IN CIRCUIT PROVISIONS WITHOUT CONTACT ELEMENTS FOR SUITABLE ACOUSTIC SIGNALS

Info

Publication number
IT1120506B
IT1120506B IT50025/79A IT5002579A IT1120506B IT 1120506 B IT1120506 B IT 1120506B IT 50025/79 A IT50025/79 A IT 50025/79A IT 5002579 A IT5002579 A IT 5002579A IT 1120506 B IT1120506 B IT 1120506B
Authority
IT
Italy
Prior art keywords
improvement
contact elements
acoustic signals
suitable acoustic
circuit provisions
Prior art date
Application number
IT50025/79A
Other languages
Italian (it)
Other versions
IT7950025A0 (en
Original Assignee
Schaltbau Gmbh
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 Schaltbau Gmbh filed Critical Schaltbau Gmbh
Publication of IT7950025A0 publication Critical patent/IT7950025A0/en
Application granted granted Critical
Publication of IT1120506B publication Critical patent/IT1120506B/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
    • B06B1/023—Driving circuits for generating signals continuous in time and stepped in amplitude, e.g. square wave, 2-level signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
IT50025/79A 1978-08-31 1979-08-10 IMPROVEMENT IN CIRCUIT PROVISIONS WITHOUT CONTACT ELEMENTS FOR SUITABLE ACOUSTIC SIGNALS IT1120506B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2837951A DE2837951C2 (en) 1978-08-31 1978-08-31 Circuit for an electrical, contactless, acoustic signal transmitter

Publications (2)

Publication Number Publication Date
IT7950025A0 IT7950025A0 (en) 1979-08-10
IT1120506B true IT1120506B (en) 1986-03-26

Family

ID=6048320

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50025/79A IT1120506B (en) 1978-08-31 1979-08-10 IMPROVEMENT IN CIRCUIT PROVISIONS WITHOUT CONTACT ELEMENTS FOR SUITABLE ACOUSTIC SIGNALS

Country Status (5)

Country Link
DE (1) DE2837951C2 (en)
ES (1) ES482602A1 (en)
FR (1) FR2435169A1 (en)
IT (1) IT1120506B (en)
YU (1) YU199879A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2908970C2 (en) * 1978-08-31 1985-09-05 Schaltbau GmbH, 8000 München Circuit for acoustic signal generator
DE2847208C2 (en) * 1978-10-30 1983-11-24 Siegas Metallwarenfabrik Wilhelm Loh Gmbh & Co Kg, 5900 Siegen Control circuit for a vibratory electromechanical system
GB2346758B (en) * 1999-02-10 2003-07-30 Manhar Amlani Audible warning devices
US7424120B2 (en) 2003-08-06 2008-09-09 Avago Technologies General Ip Pte Ltd Method and apparatus for volume control

Also Published As

Publication number Publication date
ES482602A1 (en) 1980-04-01
IT7950025A0 (en) 1979-08-10
YU199879A (en) 1983-02-28
FR2435169B3 (en) 1982-06-04
DE2837951A1 (en) 1980-03-13
DE2837951C2 (en) 1983-09-22
FR2435169A1 (en) 1980-03-28

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