Circuit and method of operation for an electrical power supply

Details Circuit and method of operation for an electrical power supply Circuit and method of operation for an electrical power supply

2011-08-16

2011-08-16

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

C320S158000, C320S132000, C320S159000, C320S160000, C320S114000, C307S032000, C307S152000

Reexamination Certificate

active

07999514

ABSTRACT:
A battery charging circuit comprising: a semiconductor switch having an output connected to a rechargeable battery; a battery charge controller for receiving power from an external source, and supplying output power to a portable device and the input of the semiconductor switch, the current output of the battery charge controller being controllable; and a voltage sensing circuit for: measuring the voltage drop across the battery charge controller; and responding to the voltage drop across the battery charge controller by modulating the semiconductor switch to reduce the quantity of current supplied to the rechargeable battery when the voltage drop is too great; whereby the total power dissipated by the battery charge controller is controlled, the portable device receiving the power it needs to operate and the rechargeable battery receiving any additional available power.

REFERENCES:
patent: 5721481 (1998-02-01), Narita et al.
patent: 5734254 (1998-03-01), Stephens
patent: 5804894 (1998-09-01), Leeson et al.
patent: 5814972 (1998-09-01), Shimada et al.
patent: 6140801 (2000-10-01), Aoki et al.
patent: 6157169 (2000-12-01), Lee
patent: 6184652 (2001-02-01), Yang
patent: 6191552 (2001-02-01), Kates et al.
patent: 6211649 (2001-04-01), Matsuda
patent: 6252375 (2001-06-01), Richter et al.
patent: 6346794 (2002-02-01), Odaohhara
patent: 6373229 (2002-04-01), Slusky
patent: 6437541 (2002-08-01), Sakurai
patent: 6437543 (2002-08-01), Oler et al.
patent: 2002/0079866 (2002-06-01), Odaohhara
patent: 2003/0052547 (2003-03-01), Fischer et al.
patent: 2003/0076138 (2003-04-01), Hwang
patent: 2003/0155892 (2003-08-01), Poletti
patent: 2003/0204708 (2003-10-01), Hulme et al.
patent: 2004/0042138 (2004-03-01), Saito et al.
Examiner's report on European Patent Application No. 04712979.6 mailed Dec. 15, 2010, from the European Patent Office (4 pages).
“Notice Requesting Submission of Opinion,” issued in corresponding Korean Patent Application No. 10-2005-7015376, dated Oct. 27, 2010, pp. 1-6.

Affiliated with

Also associated with

Rating

Circuit and method of operation for an electrical power supply does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit and method of operation for an electrical power supply, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit and method of operation for an electrical power supply will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2639852