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:
Apr. 28, 1998
Filed:
Sep. 05, 1996
Joseph Henry Condon, Summit, NJ (US);
Joseph Peter Savicki, Clinton, NJ (US);
Other;
Abstract
In an amplifier for driving a large capacitive load, a boost circuit is included to improve the efficiency of the amplifier where an input to the amplifier has a small signal swing. The amplifier comprises a stack of series-connected charge-storage capacitors serving as secondary power sources. During a charging of the capacitive load, charge is obtained from voltage nodes between the stack capacitors. One or more low-voltage power supplies are connected to the capacitive load in the boost circuit. With these power supplies, during a discharge of the capacitive load, the latter appears to be charged to a higher voltage than it actually is so as to return some charge to the highest voltage node from where a portion of its charge was obtained. As a result, the power consumption in the amplifier is substantially reduced.