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:
Oct. 27, 2015
Filed:
Nov. 19, 2012
Hitachi Kokusai Electric Inc., Tokyo, JP;
Hitachi Kokusai Electric Inc., Tokyo, JP;
Abstract
A power supply circuit includes: a push-pull amplifier unit which amplifies an input signal with a push-pull amplification protocol; a variable power supply unit which varies, with a control signal, the voltage level of a power supply voltage which is supplied to the push-pull amplifier; a switch control unit which, on the basis of the input signal, outputs the control signal which controls the voltage level of the power supply voltage; and a timing control unit which applies a specified time delay to the input signal. When the control signal rises, the switch control unit causes the control signal to rise at a faster timing, according to the voltage level switch transition timing, than a delay time upon the timing control unit, and when the control signal falls, the switch control unit causes the control signal to fall at the timing of the delay time.