The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 1999
Filed:
Mar. 07, 1997
Hiroshi Hayama, Tokyo, JP;
Takashi Nose, Tokyo, JP;
NEC Corporation, , JP;
Abstract
A drive circuit is provided which enables low-power-consumption drive of even a low-voltage capacitive load. The drive circuit used has a capacitance, one end of which is grounded and other end of which is connected in series via an analog switching circuit to one end of an inductive element, thereby forming a series LC resonant circuit, the other end of the inductive element being connected to one end of a capacitive load, the other end of which is grounded, a PMOS switching element being connected between the ungrounded end of the above-noted load capacitance and a positive drive voltage supply and an NMOS switching element being connected between the ungrounded end of the load capacitance and a ground terminal.