Thomas L Sharp

US Patent:

7294995, Nov 13, 2007

Filed:

May 8, 2006

Appl. No.:

11/430385

Inventors:

Kerry A. Stevens - Beaverton OR, US
Michael J. Mende - Portland OR, US
Jonathan S. Dandy - Beaverton OR, US
Thomas J. Sharp - Tigard OR, US

Assignee:

Tektronix, Inc. - Beaverton OR

International Classification:

G01R 31/02

US Classification:

324 725

Abstract:

A current probing system has a current probe and a detachable adapter. The current probe has a probe body with electrically conductive contacts that mate with electrically conductive contacts on the adapter. Leads extend from the adapter for coupling to a current carrying conductor. The leads can connect to a plug that is coupled to a current diverting device for coupling a current signal to the current probe. The adapter may also include a switch that selectively couples the current signal to the current probe when the adapter is mated with the current probe. The contacts of the current probe are coupled to a current sensing circuit which generates a voltage output representative of the current signal. The voltage output is coupled to an oscilloscope via an electrical cable.

US Patent:

7358717, Apr 15, 2008

Filed:

May 8, 2006

Appl. No.:

11/430394

Inventors:

Jonathan S. Dandy - Beaverton OR, US
Kerry A. Stevens - Beaverton OR, US
Michael J. Mende - Portland OR, US
Thomas J. Sharp - Tigard OR, US

Assignee:

Tektronix, Inc. - Beaverton OR

International Classification:

G01R 1/20

US Classification:

324126, 324754, 3241581

Abstract:

An input by-pass circuit for a current probe has first and second switches coupled between current probe inputs and current sensing circuit inputs. A switch control is coupled to the switching circuit for selectively coupling and decoupling the current probe inputs to the current sensing circuit such that the current signal continuously flows in the device under test.

US Patent:

20070257661, Nov 8, 2007

Filed:

May 8, 2006

Appl. No.:

11/430386

Inventors:

Michael Mende - Portland OR, US
Robert Nordstrom - Beaverton OR, US
Thomas Sharp - Tigard OR, US

International Classification:

G01R 15/20
G01R 15/18

US Classification:

32411700R

Abstract:

A current probing system for acquiring a current signal from a current carrying conductor has a current diverting element mounted on the conductor for serially coupling the current signal to a current probe. The current probe has a probe body and first and second electrically conductive contacts extending from one end of the probe body for connecting to the current diverting element. A current sensing circuit is coupled to the first and second electrically conductive contacts for generating an output signal representative of the current flowing in the current carrying conductor. An electrically conductive cable is coupled to receive the output signal from the current sensing device and extends from the other end of the probe body for coupling to an oscilloscope.

US Patent:

20070257662, Nov 8, 2007

Filed:

May 8, 2006

Appl. No.:

11/430398

Inventors:

Michael Mende - Portland OR, US
Robert Nordstrom - Beaverton OR, US
Thomas Sharp - Tigard OR, US

International Classification:

G01R 15/18

US Classification:

32411700R

Abstract:

A current probe for acquiring a current signal from a current carrying conductor via a current diverting element has a probe body and first and second electrically conductive contacts extending from one end of the probe body for connecting to current diverting element. A current sensing circuit is coupled to the first and second electrically conductive contacts for generating an output signal representative of the current flowing in the current carrying conductor. An electrically conductive cable is coupled to receive the output signal from the current sensing device and extends from the other end of the probe body for coupling to an oscilloscope.