초록 ▼

An auxiliary power supply system serves as a consumer's primary power source during selected times and power outages in order to provide the consumer with a continuous supply of AC voltage. A power supply has a rechargeable DC source coupled to an inverter/charger circuit. A first switching means ha

An auxiliary power supply system serves as a consumer's primary power source during selected times and power outages in order to provide the consumer with a continuous supply of AC voltage. A power supply has a rechargeable DC source coupled to an inverter/charger circuit. A first switching means has an input port coupled to an AC voltage source and has an output port. The first switching means, programmable with at least one selected time period, couples the AC voltage source to the output port during a non-selected time period that is different than the selected time period and uncouples the AC voltage source from the output port during the selected time period. A second switching means is coupled to the output port and has a switch coupled between the output port and the inverter/charger circuit. The switch is selectively placed in one of a first position when a normal AC voltage is sensed and a second position when an inadequate AC voltage is sensed. In the first position, the switch is positioned to so that the normal AC voltage is available across the switch and is supplied to the inverter/charger circuit. In the second position, the switch is positioned to receive an AC output voltage from the inverter/charger circuit. As a result, one of the normal AC voltage and AC output voltage is available across the switch at all times.

대표청구항 ▼

1. A system for continuous supply of AC voltage, comprising:a power supply including rechargeable DC batteries coupled to an inverter/charger circuit that converts a supplied AC voltage to a DC voltage to charge said DC batteries, and that converts a DC output voltage from said DC batteries to an AC

1. A system for continuous supply of AC voltage, comprising:a power supply including rechargeable DC batteries coupled to an inverter/charger circuit that converts a supplied AC voltage to a DC voltage to charge said DC batteries, and that converts a DC output voltage from said DC batteries to an AC output voltage when said DC batteries are discharging; first means having an input port coupled to an AC voltage source and having an output port, said first means being programmable with at least one selected time period, said first means coupling said AC voltage source to said output port during a non-selected time period that is different than said selected time period and said first means uncoupling said AC voltage source from said output port during said selected time period; and second means coupled to said output port for sensing thereon one of a normal AC voltage and an inadequate AC voltage, said second means including a switch coupled between said output port and said inverter/charger circuit for selectively being placed in one of a first position when said normal AC voltage is sensed and a second position when said inadequate AC voltage is sensed wherein, in said first position, said switch is positioned to supply said normal AC voltage to said inverter/charger circuit as said supplied AC voltage wherein said normal AC voltage is available across said switch, and wherein, in said second position, said switch is positioned to receive said AC output voltage from said inverter/charger circuit as said DC batteries discharge wherein said AC output voltage is available across said switch, and wherein one of said normal AC voltage and said AC output voltage is available across said switch.