Variable-capacitance power supply apparatus
First Claim
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1. A power supply apparatus comprising:
- a plurality of series-coupled capacitors having one end thereof grounded and the other end coupled to an output terminal;
means for independently charging each of the plurality of series-coupled capacitors;
means for detecting a voltage across each of the plurality of capacitors;
means for coupling the nodes between adjacent ones of the plurality of series-coupled capacitors to the output terminal; and
means responsive to the voltages detected by the detecting means for controlling the charging means to produce an appropriate output power at the output terminal in accordance with a selected total capacitance of the plurality of series-coupled capacitors.
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Abstract
A variable-capacitance power supply apparatus has an inexpensive structure for variably supplying a desired high power to a load by selecting an appropriate total capacitance for storing charge. A number "n" (an arbitrary integer) of series-coupled capacitors each having capacitance C are independently charged to produce an appropriate output voltage. The total capacitance Cs of the series-coupled capacitors is obtained as Cs=C/n. The total charge Q stored in the series-coupled capacitors is proportional to the total capacitance Cs. The series-coupled capacitors are selectively charged to produce an appropriate output voltage and the desired high power to be supplied to the load.
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3 Claims
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1. A power supply apparatus comprising:
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a plurality of series-coupled capacitors having one end thereof grounded and the other end coupled to an output terminal; means for independently charging each of the plurality of series-coupled capacitors; means for detecting a voltage across each of the plurality of capacitors; means for coupling the nodes between adjacent ones of the plurality of series-coupled capacitors to the output terminal; and means responsive to the voltages detected by the detecting means for controlling the charging means to produce an appropriate output power at the output terminal in accordance with a selected total capacitance of the plurality of series-coupled capacitors. - View Dependent Claims (2, 3)
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Specification