Charging or discharging apparatus for electrically charging...

Details Charging or discharging apparatus for electrically charging... Charging or discharging apparatus for electrically charging...

2007-02-16

2009-11-24

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Capacitor charging or discharging

Reexamination Certificate

active

07622898

ABSTRACT:
A charging apparatus for electrically charging a capacitor storage type power source comprises a switching circuit for turning on/off the charge current, a current detection circuit for detecting the charge current, a voltage detection circuit for detecting the voltage of power source, a constant current control circuit for outputting an error amplifying signal according to the current value, a power control circuit for outputting an error amplifying signal according to the current value, the voltage value-and a power reference value, a constant voltage control circuit for outputting an error amplifying signal according to the voltage value and a voltage reference value, an OR circuit for selecting one of the error amplifying signals and a control circuit for generating a pulse width modulation signal according to the error amplifying signal output from the OR circuit to turn on/off the switching circuit and control the charge current.

REFERENCES:
patent: 6917124 (2005-07-01), Shetler et al.
patent: 7541782 (2009-06-01), Narendra et al.

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