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. 27, 2004
Filed:
Jul. 29, 2002
Ulrich Schmidt, Preetz, DE;
Jörg Zessin, Ascheberg, DE;
NexPress Solutions LLC, Rochester, NY (US);
Abstract
A device for producing and controlling an alternating current with a direct current source in at least one inductive load, in particular for driving a stepper motor, preferably in microsteps. A device for producing and controlling an alternative current with a direct current source in at least one inductive load, in particular for driving a stepper motor, preferably in micro-steps. Such device includes a control loop circuit having an actuator for the control loop containing a complex programmable logic device (CPLD), which is for connecting the control boy to feedback elements. This provides for a flexible adjustment of the current producing and controlling device to the load to be operated, and to the function of the load, without changing the control loop circuit in which the CPLD is implemented. The actuator can be parameterized by use of a (universal) logic description by parameter constants.