GB1524107A - Circuit arrangement for an acoustic generator - Google Patents
Circuit arrangement for an acoustic generatorInfo
- 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
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.
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)
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)
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 |
-
1975
- 1975-12-03 DE DE19752554219 patent/DE2554219A1/en not_active Withdrawn
-
1976
- 1976-11-23 GB GB4877576A patent/GB1524107A/en not_active Expired
Cited By (1)
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 |