Collabora Ltd since May 2008
Software Engineer
GNOME Foundation since Jul 2006
Member
Rosemount Dec 2004 - May 2008
Senior Software Engineer
Rosemount Jun 2001 - Dec 2004
Electrical Engineer
Education:
Dordt College 1995 - 2000
Skills:
C++ Open Source Gtk+ Debugging Free Software Linux Bash Git Subversion Software Design Python Embedded Software C Software Development Programming Debian Software Engineering
Garrie D. Huisenga - Chaska MN, US James A. Johnson - Savage MN, US Jonathon M. Jongsma - Minneapolis MN, US
Assignee:
Rosemount, Inc. - Eden Prairie MN
International Classification:
G05F 1/40 H02H 7/16
US Classification:
323282
Abstract:
A process field device for coupling to a two wire process control loop includes a field device circuitry and a switching regulator to power the circuitry. A series regulator provides a regulated supply voltage to the switching regulator. A noise filter reduces the amount of noise from the switching regulator which enters the two wire process control loop.
Analog-To-Digital Converter With Range Error Detection
Jonathon Jongsma - Minneapolis MN, US Garrie Huisenga - Chaska MN, US
Assignee:
Rosemount Inc. - Eden Prairie MN
International Classification:
H03M001/00
US Classification:
341110000
Abstract:
A circuit includes a multiplexer, an analog-to-digital converter, and a processor that compares a sequence of digital outputs from the analog-to-digital converter to a sequence of normal ranges that correspond with the digital outputs in order to provide an error output when one of the digital outputs is outside its normal range.