Charging circuit

Details Charging circuit Charging circuit

2008-05-20

2008-05-20

Philogene, Haissa (Department: 2821)

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

C315S219000, C315S20000A, C315S24100S, C315S232000, C315S276000, C323S271000, C323S277000, C363S021130, C363S021050

Reexamination Certificate

active

07375471

ABSTRACT:
A charging circuit has a battery12, switching element14, and resistor16for current detection arranged on the primary side of transformer10. Diode18and capacitor20for storing electric power are arranged on the secondary side of transformer10. In a normal state, the ON/OFF states of switching element14are repeated corresponding to output signals U1, U2of two comparators28, 30. However, if switching element14stays on or off longer than a prescribed period of time for some reason, the status of switching14will be switched forcibly by an auxiliary sequence of the logic parts in control logic42.

REFERENCES:
patent: 4479076 (1984-10-01), Yamaoka et al.
patent: 5068575 (1991-11-01), Dunsmore et al.
patent: 5912552 (1999-06-01), Tateishi

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