Test contact connection checking method and circuit

Details Test contact connection checking method and circuit Test contact connection checking method and circuit

1997-08-15

1999-03-23

Do, Diep N.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

With auxiliary means to condition stimulus/response signals

324421, 324538, 324756, G01R 2714, G01R 3104

Patent

active

058865306

ABSTRACT:
A contact resistance check circuit and method for verifying that a sufficient electrical connection is established between a source and a sense lead of a Kelvin connection. The circuit includes a microprocessor for driving a transformer that is connected to the source/sense probe (i.e., contact resistance) with an input pulse. The input pulse is altered in relation to the magnitude of the contact resistance to produce a check pulse. A comparator is used to compare the check pulse with a threshold voltage and for generating a fault indication signal. A flip flop then stores the fault indication signal so that the fault indication signal may be monitored by the microprocessor.

REFERENCES:
patent: 3822398 (1974-07-01), Rovnyak
patent: 4178543 (1979-12-01), Wrinn et al.
patent: 4342957 (1982-08-01), Russell
patent: 4876515 (1989-10-01), Ball
patent: 4954782 (1990-09-01), Ball

Affiliated with

Also associated with

Rating

Test contact connection checking method and circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Test contact connection checking method and circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Test contact connection checking method and circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2129992