Piezoelectric element driving circuit
US8541925B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2011 |
| Grant date | Sep 24, 2013 |
| Priority date | — |
| Expiry date | May 7, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/2047
Abstract
A transformer T1 receives a sinusoidal signal on the primary side. The transformer T1 is provided with a terminal 3, a terminal 5, and a center tap 4 on the secondary side. The center tap 4 is connected to the anode of a diode D1. The cathode of the diode D1 is connected to the cathode of a diode D2 and one electrode of a capacitor C1. The other electrode of the capacitor C1 is connected to the anode of a diode D3 and a connection point of the second electrode of a piezoelectric element C2 and the first electrode of a piezoelectric element C3. The second electrode of the piezoelectric element C3 is connected to the terminal 3. The first electrode of the piezoelectric element C2 is connected to the cathode of the diode D3, the anode of the diode D2, and the terminal 5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.