Leak detecting circuit

Details Leak detecting circuit Leak detecting circuit

2011-08-23

2011-08-23

Hollington, Jermele M (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of ground fault indication

Reexamination Certificate

active

08004284

ABSTRACT:
A leak detecting circuit includes: a current path having one end connected to a conductor housing a device supplied with a direct-current voltage from a direct-current power source, and having another end connected to a negative electrode of the direct-current power source; the current path including a limiting resistance for limiting a current, a switch element having a first electrode, a second electrode, and a control electrode, conduction between the first electrode and the second electrode being controlled, a detecting resistance for detecting a current flowing through the current path, and a variable direct-current power source allowing a plurality of leak detecting reference voltages for detecting a leak to be selected, and having a negative electrode connected to the negative electrode of the direct-current power source; an amplifier for amplifying a voltage across the detecting resistance; and a constant-voltage circuit for making constant a potential difference between a voltage of the control electrode of the switch element and a voltage of a positive electrode of the variable direct-current power source; wherein a leak between the conductor and the direct-current power source is detected on a basis of the voltage across the detecting resistance, the voltage across the detecting resistance being amplified by the amplifier.

REFERENCES:
patent: 4768371 (1988-09-01), Joshi
patent: 5412315 (1995-05-01), Tsuda
patent: 6320389 (2001-11-01), Tamesue et al.
patent: 6833708 (2004-12-01), Furukawa
patent: 7375936 (2008-05-01), Morishita
patent: 2009/0287430 (2009-11-01), Atoji et al.
patent: 2009/0295401 (2009-12-01), Kamata
patent: 2011/0006777 (2011-01-01), Park et al.
patent: 2007-256114 (2007-10-01), None

Affiliated with

Also associated with

Rating

Leak detecting 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 Leak detecting circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leak detecting circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2674008