Piezoelectric buzzer driving circuit
US8023671B2 · kind B2 · utility
1Cited by
1References
10Claims
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Key dates
| Filing date | Oct 24, 2007 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | Jul 20, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B3/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A piezoelectric buzzer driving circuit (200) for driving a piezoelectric buzzer (211) with two terminals includes a reverser (216). The reverser includes an output terminal and an input terminal (24) configured for receiving a controlling signal to control an output of the reverser. The two terminals of the piezoelectric buzzer respectively connected to the input terminal and the output terminal such that a D-value of the voltage across the piezoelectric buzzer is twice as large as the voltage of the controlling signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.