| 摘要 |
A voltage generation circuit in which an alternating voltage is inputted through an input node and a constant voltage is outputted through an output node, wherein charge transfer means, which is provided between the input node and the output node, is so controlled by the alternating voltage of the input node that an amount of electric charge flowing from the input node to the output node is different from an amount of electric charge flowing from the output node to the input node. That is, movement of electric charge from the input node to the output node is allowed, while backflow of electric charge from the output node to the input node is prevented. The circuit includes a first input node to which an alternating voltage is inputted; a second input node to which a constant reference voltage is inputted; a first switching element which is connected between the first input node and an output node; a second switching element which is connected between the second input node and a control terminal of the first switching element; and a third switching element which is connected between the control terminal of the first switching element and the output node. The control terminals of the second and third switching elements are connected to the first input node.
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