Invention Grant
- Patent Title: Piezoelectric element driving circuit
- Patent Title (中): 压电元件驱动电路
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Application No.: US13039226Application Date: 2011-03-02
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Publication No.: US08541925B2Publication Date: 2013-09-24
- Inventor: Yoshinobu Nakayama , Takahiro Imai
- Applicant: Yoshinobu Nakayama , Takahiro Imai
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Limited
- Current Assignee: Ricoh Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Dickstein Shapiro LLP
- Priority: JP2010-052378 20100309
- Main IPC: H01L41/09
- IPC: H01L41/09
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.
Public/Granted literature
- US20110223044A1 PIEZOELECTRIC ELEMENT DRIVING CIRCUIT Public/Granted day:2011-09-15
Information query
IPC分类:
