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. 10, 1983
Filed:
Nov. 16, 1981
Ronald H Randall, Cuba, NY (US);
Acme Electric Corporation, Cuba, NY (US);
Abstract
An inverter circuit is disclosed in which the alternating current output is rectified to become a DC power supply with a regulated output voltage. The inverter is controlled to limit the peak current conducted by the power semiconductors and a current limit circuit is provided to limit the DC output current. The invention provides an output current sensing circuit utilizing a current transformer, with the primary winding thereof connected in the alternating current portion of the inverter circuit and with current flow in the primary winding proportional to the DC output. Rectifier means is provided to rectify the output of the secondary winding of the current transformer, and this is supplied across a first resistor. There is means to sample the voltage across this first resistor only during the conduction period of the power semiconductors. An integrating means is provided to integrate the sampled voltage and develop an output current signal for control of the output current from the inverter circuit. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.