GB1524107A - Circuit arrangement for an acoustic generator - Google Patents

Circuit arrangement for an acoustic generator

Info

Publication number
GB1524107A
GB1524107A GB4877576A GB4877576A GB1524107A GB 1524107 A GB1524107 A GB 1524107A GB 4877576 A GB4877576 A GB 4877576A GB 4877576 A GB4877576 A GB 4877576A GB 1524107 A GB1524107 A GB 1524107A
Authority
GB
United Kingdom
Prior art keywords
acoustic generator
circuit arrangement
mark
space ratio
monostable
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
GB4877576A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1524107A publication Critical patent/GB1524107A/en
Expired legal-status Critical Current

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
    • B06B1/0215—Driving circuits for generating pulses, e.g. bursts of oscillations, envelopes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
    • H03K3/03—Astable circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Toys (AREA)
  • Electromechanical Clocks (AREA)
  • Amplifiers (AREA)

Abstract

1524107 Tone generators INTERNATIONAL STANDARD ELECTRIC CORP 23 Nov 1976 [3 Dec 1975] 48775/76 Heading G5J In an acoustic generator, the mark-space ratio of the signals from oscillator AM to switching transistor T, and hence the volume of the sound from loudspeaker L, is varied by adjusting the RC value of a monostable M3 timing circuit. Additional circuitry (Fig. 2, not shown) ensures maximum and minimum values for the mark-space ratio.
GB4877576A 1975-12-03 1976-11-23 Circuit arrangement for an acoustic generator Expired GB1524107A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752554219 DE2554219A1 (en) 1975-12-03 1975-12-03 CIRCUIT ARRANGEMENT FOR AN ACOUSTIC SIGNAL GENERATOR

Publications (1)

Publication Number Publication Date
GB1524107A true GB1524107A (en) 1978-09-06

Family

ID=5963278

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4877576A Expired GB1524107A (en) 1975-12-03 1976-11-23 Circuit arrangement for an acoustic generator

Country Status (2)

Country Link
DE (1) DE2554219A1 (en)
GB (1) GB1524107A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205676A (en) * 1987-04-29 1988-12-14 William Cruickshank Audible warning device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2852196C2 (en) * 1978-12-02 1983-01-27 Richard Hirschmann Radiotechnisches Werk, 7300 Esslingen Acoustic warning signal generator with periodically changing frequency of the output signal
DE2931437C2 (en) * 1979-08-02 1981-09-24 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for controlling a signal loudspeaker
DE3147916A1 (en) * 1981-12-03 1983-06-23 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for generating an adjustable-volume audible signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205676A (en) * 1987-04-29 1988-12-14 William Cruickshank Audible warning device

Also Published As

Publication number Publication date
DE2554219A1 (en) 1977-06-16

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee