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:
Sep. 27, 2011
Filed:
Jul. 13, 2007
Johannes Schwarzkopf, Marktheidenfeld, DE;
Johannes Schwarzkopf, Marktheidenfeld, DE;
Abstract
The invention specifies a circuit arrangement () for controlling a brushless electric motor () with a control chip (), particularly a microcontroller, which has a number of PWM contacts (), which can be used to output a PWM signal, and a number of commutation contacts (), which can be used to output a commutation signal. In this case, provision is made for at least one commutation contact () to be alternately controllable as an input and an output, for the at least one commutation contact () to have its output electrically connected to a PWM contact (), and for the commutation contact () connected in this manner to be able to be contacted for the purpose of tapping off a control signal. Such a circuit arrangement () increases the control options for a given control chip (). The number of PWM sources required is reduced.