AC adapter having a function for lowering and heightening an...

Details AC adapter having a function for lowering and heightening an... AC adapter having a function for lowering and heightening an...

2006-07-04

2006-07-04

Berhane, Adolf Deneke (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell charging

With detection of current or voltage integral

C320S160000

Reexamination Certificate

active

07071655

ABSTRACT:
Disposed in a secondary side circuit of an AC adapter (10A), a−ΔI detection circuit (45) detects that a charging current (Ic) lowers less than a set current value to produce a detected signal. A voltage control circuit (42A) operates so as to repeat the steps of gradually lowering an adapter voltage (VADP) and of heightening the adapter voltage in response to the detected signal.

REFERENCES:
patent: 5442274 (1995-08-01), Tamai
patent: 5465039 (1995-11-01), Narita et al.
patent: 5654622 (1997-08-01), Toya et al.
patent: 6246890 (2001-06-01), Sato et al.

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