Automatic start-up circuit and uninterruptible power supply apparatus having such automatic start-up circuit
First Claim
1. An automatic start-up circuit for use in an uninterruptible power supply apparatus, said uninterruptible power supply apparatus comprising an energy storage unit and a switching circuit, said automatic start-up circuit comprising:
- an operating status detecting circuit connected to an energy storage unit connecting node for detecting an operating status of said energy storage unit indicative of whether the energy storage unit is installed in the uninterruptible power supply apparatus or not through said energy storage unit connecting node, and generating an start-up control signal according to said operating status of said energy storage unit; and
a secondary switch driving circuit connected to said operating status detecting circuit, a control terminal of said switching circuit and a common terminal for determining whether said switching circuit is to be driven to be conducted when said start-up signal indicates that the energy storage unit is installed in the uninterruptible power supply apparatus, thereby automatically starting up said uninterruptible power supply apparatus.
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Accused Products
Abstract
An automatic start-up circuit for use in an uninterruptible power supply apparatus is provided. The uninterruptible power supply apparatus includes an energy storage unit and a switching circuit. The automatic start-up circuit includes an operating status detecting circuit and a secondary switch driving circuit. The operating status detecting circuit is connected to an energy storage unit connecting node for detecting an operating status of the energy storage unit through the energy storage unit connecting node, and generating an start-up control signal according to the operating status of the energy storage unit. The secondary switch driving circuit is connected to the operating status detecting circuit, a control terminal of the switching circuit and a common terminal for determining whether the switching circuit is automatically driven to be conducted to start up the uninterruptible power supply apparatus according to the start-up control signal.
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Citations
20 Claims
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1. An automatic start-up circuit for use in an uninterruptible power supply apparatus, said uninterruptible power supply apparatus comprising an energy storage unit and a switching circuit, said automatic start-up circuit comprising:
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an operating status detecting circuit connected to an energy storage unit connecting node for detecting an operating status of said energy storage unit indicative of whether the energy storage unit is installed in the uninterruptible power supply apparatus or not through said energy storage unit connecting node, and generating an start-up control signal according to said operating status of said energy storage unit; and a secondary switch driving circuit connected to said operating status detecting circuit, a control terminal of said switching circuit and a common terminal for determining whether said switching circuit is to be driven to be conducted when said start-up signal indicates that the energy storage unit is installed in the uninterruptible power supply apparatus, thereby automatically starting up said uninterruptible power supply apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An uninterruptible power supply apparatus comprising:
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an AC-to-DC converting circuit for converting an input AC voltage into a first DC voltage; an energy storage unit connected to an energy storage unit connecting node for storing electric energy; a charging circuit interconnected between said AC-to-DC converting circuit and said energy storage unit for charging said energy storage unit; a selection circuit connected to said AC-to-DC converting circuit, said energy storage unit connecting node and a load for selectively outputting said first DC voltage or an energy storage unit connecting node voltage to said load; a switching circuit connected to said energy storage unit connecting node; an automatic start-up circuit connected to said energy storage unit connecting node and a control terminal of said switching circuit for detecting an operating status of said energy storage unit indicative of whether the energy storage unit is installed in the uninterruptible power supply apparatus, wherein said switching circuit is driven to be conducted when said start-up signal indicates that the energy storage unit is installed in the uninterruptible power supply apparatus, thereby automatically starting up said uninterruptible power supply apparatus; a control circuit connected to said switching circuit for controlling operations of said uninterruptible power supply apparatus and generating a first control signal; and a main switch driving circuit connected to said control terminal of said switching circuit and said control circuit for driving conduction of said switching circuit according to said first control signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification