Electricity: battery or capacitor charging or discharging – Battery or cell charging
Reexamination Certificate
1999-11-16
2001-03-27
Tso, Edward H. (Department: 2838)
Electricity: battery or capacitor charging or discharging
Battery or cell charging
C320S140000
Reexamination Certificate
active
06208118
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates generally to a remotely controllable rectifier, and more particularly, to a rectifier provided with an inside rechargeable back-up battery serving as an uninterrupted power supply which is remotely controlled from a far place by detecting phone rings.
2. Description of the Prior Art
A rectifier which plays, an indispensable role in almost every kind of household electric appliance nowadays, is used to convert the civil alternating current (AC) into a direct current (DC). However, in the case of an unexpected power failure caused by insufficiency of power source, impairment of transformer station, or breakdown of a power transmission circuit of the electric power company, people might get annoyed due to lack of an uninterrupted power supply (UPS).
Besides, generally speaking, a maker of household electric appliance would rather care more about the function of his products than about the rectifier, and needless to say management and control of the power supply. Further, the electric appliance usually could be controlled only by people on the spot; it seemed a mission impossible for people to actuate the power supply from somewhere a long distance away during the old days.
In view of the above-described imperfections, after years of constant effort in research, the inventor of this invention has consequently developed and proposed this improved mechanism pertaining to the subject matter of a remotely controllable rectifier.
SUMMARY OF THE INVENTION
The primary object of this invention is to provide a rectifier with a replaceable and rechargeable back-up battery that can supply power during a failure of civil power.
Another object of this invention is to provide a rectifier that can keep the DC power available actuated by detecting of a phone call.
For realizing the abovesaid remotely controllable rectifier, this invention comprises an AC/DC converter, a charger, a battery detector, a DC/DC converter, a controller, a pilot lamp, a replaceable and rechargeable back-up battery, and a ring detector. The AC/DC converter is employed to convert the civil AC power into a DC power supply via a transformer and a bridge rectifier. The charger is used to charge the battery when the civil power is available and control the charging voltage and current appropriately to obtain a best efficacy and prolong lifetime of the battery. The battery detector used to detect a battery power is offered with a resistor-divided voltage in addition to the battery power for applying a voltage signal to the controller to shut down the battery power if necessary to avoid over-discharge. The DC/DC converter is used for converting DC power, which may come from the civil AC power or the battery, into another stable DC power as desired. The controller is composed of some electronic circuits or a programmed microprocessor for controlling the DC/DC converter to output or not output DC power according to the state of a power switch, the battery, phone bell. etc. The pilot lamp is employed to indicate the present output state of the rectifier. The replaceable and rechargeable back-up battery is placed in a battery compartment of a machine case. The ring detector is used to an detect alternating signal of a phone ring which will be rectified by a bridge rectifier to become a discrete DC signal and thereby to drive a photocoupler to create a grounded signal for the controller to judge and take a due action.
REFERENCES:
patent: 4885766 (1989-12-01), Yasuoka et al.
patent: 5825283 (1998-10-01), Camhl
Bacon & Thomas PLLC
Digi Power Manufacturing Inc.
Tso Edward H.
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