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:
May. 30, 2000
Filed:
Feb. 05, 1999
Joseph Pernyeszi, Scotts Valley, CA (US);
General Electronics Applications, Inc., Scotts Valley, CA (US);
Abstract
A PWM inverter includes a first and a second switching transistor to generate power at an output voltage which is a function of a duty cycle of an input control signal and voltages at a positive rail and a negative rail, wherein the first switching transistor switches current from the positive rail through a first current node to an output load and the second switching transistor switches current from the negative rail through a second current node to the output load. The PWM inverter also includes a number of components to capture switching power, such as a first inductor coupled between the first current node and a first intermediate node and a second inductor coupled between the second current node and a second intermediate node, a first output inductor coupled between the first intermediate node and an output node, and a second output inductor coupled between the second intermediate node and the output node. A first diode pair is coupled between the second current node and the positive rail wherein current flows from the second current node to the positive rail when the first diode pair is forward biased. A second diode pair is coupled between from the negative rail and the first current node wherein current flows from the negative rail to the first current node when the second diode pair is forward biased. The circuit can also be used in pulse frequency circuits.