4/2/2023 0 Comments Piezo pronunciation![]() ![]() ![]() Hence, when the electronic drive circuit is driving the piezo-electric element 10 to produce a particular sound, the overall sound pressure level may be significantly enhanced for a given power consumption, if the piezo-electric element is also excited at the dominant resonant frequency.Ī suitable waveform for producing a first audible sound at a high perceived first tone, while also exciting the piezo-electric element at its dominant resonant frequency is described with reference to Figure 3 below, and a suitable waveform for producing a second audible sound at a low perceived second tone, while also exciting the piezo- electric element at its dominant resonant frequency is described with reference toġ0 A sounder, substantially as hereinbefore described and with reference to the accompanying drawings numbered from Figure 1 to Figure 8. When resonating at the dominant resonant frequency, the power consumed by the piezo-electric element for a given sound pressure level is at a minimum. The piezo-electric element has a dominant resonant frequency that is stimulated when the audible sound is produced. with modulation, harmonicsįrom Figure 1 an electronic drive circuit 100 for an alarm sounder is shown, the circuit being arranged to drive the piezo-electric element 10 to produce an audible sound. B06B1/0276- Driving circuits for generating signals continuous in time for generating multiple frequencies with simultaneous generation, e.g.B06B1/0269- Driving circuits for generating signals continuous in time for generating multiple frequencies.B06B1/0223- Driving circuits for generating signals continuous in time.B06B1/02- Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy.B06B1/00- Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency.FOR PERFORMING MECHANICAL WORK IN GENERAL B06B- METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g.B06- GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL.238000004519 manufacturing process Methods 0.000 description 2.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority claimed from GB0211987 external-priority Application filed by Gent Ltd filed Critical Gent Ltd Publication of EP1507603A1 publication Critical patent/EP1507603A1/en Application granted granted Critical Publication of EP1507603B1 publication Critical patent/EP1507603B1/en Status Active legal-status Critical Current Anticipated expiration legal-status Critical Links ![]() Original Assignee Gent Ltd 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 or warranty as to the accuracy of the list.) ( en Inventor Michael Barson Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number EP03730331A Other languages German ( de) Google Patents Acoustic alarm having a piezo-electric element driven at multiple frequencies Google Patents EP1507603A1 - Acoustic alarm having a piezo-electric element driven at multiple frequencies EP1507603A1 - Acoustic alarm having a piezo-electric element driven at multiple frequencies ![]()
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