Active current limiting circuit

Details Active current limiting circuit Active current limiting circuit

2005-05-05

2009-10-27

Barnie, Rexford N (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

Reexamination Certificate

active

07609499

ABSTRACT:
A current controller for a device is provided. The current controller includes power and ground inputs for connecting to a source of energization, and power and ground outputs for connecting to the device. A variable impedance is coupled in series between the power input and the power output and has an impedance control input. The impedance control input controls the variable impedance between a high impedance, OFF state and a low impedance, ON state. An impedance control circuit is coupled to the impedance control input, which biases the variable impedance in the high impedance, OFF state when at least one of the following conditions occur: the resistance between the power and ground outputs is less than a threshold resistance, and current drawn by the current controller through the power input exceeds a threshold current level.

REFERENCES:
patent: 4841313 (1989-06-01), Weiner
patent: 4943762 (1990-07-01), Campbell et al.
patent: 4999728 (1991-03-01), Curl
patent: 5311071 (1994-05-01), Ueda
patent: 5519264 (1996-05-01), Heyden et al.
patent: 5559660 (1996-09-01), Watson et al.
patent: 5694305 (1997-12-01), King et al.
patent: 5861737 (1999-01-01), Goerke et al.
patent: 6127882 (2000-10-01), Vargha et al.
patent: 6181030 (2001-01-01), Carpenter et al.
patent: 6185645 (2001-02-01), Klein et al.
patent: 6225797 (2001-05-01), Willis et al.
patent: 6233625 (2001-05-01), Vander Kamp et al.
patent: 6262493 (2001-07-01), Garnett
patent: 6333643 (2001-12-01), Kurooka et al.
patent: 6408394 (2002-06-01), Vander Kamp et al.
patent: 6525515 (2003-02-01), Ngo et al.
patent: 6535944 (2003-03-01), Johari et al.
patent: 6538492 (2003-03-01), Sano et al.
patent: 6643087 (2003-11-01), Kuroki et al.
patent: 6917504 (2005-07-01), Nguyen et al.
patent: 6949961 (2005-09-01), Robb et al.
patent: 2002/0118501 (2002-08-01), Ochi
patent: 2002/0196004 (2002-12-01), Berson et al.
patent: 2003/0056125 (2003-03-01), O'Conner et al.
patent: 2004/0012263 (2004-01-01), Hussein et al.
patent: 2004/0246642 (2004-12-01), Ball
patent: 2006/0250738 (2006-11-01), Hussein et al.
Paul Horowitz and Winfield Hill, The Art of Electronics, Second Edition, pp. 239-232.
U.S. Appl. No. 10/824,866, filed Apr. 15, 2004.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4094031