A/D converter with adjustable internal connection and method for the sameoperating
AssigneeDelta Electronics, Inc.
InventorsLi Yun-Xiu, Wei Chen, Yung-Wei Peng
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Abstract
An A/D converter with adjustable internal connection and a method for operating the same are provided. The A/D converter comprises: a plurality of piezo-transforming devices for detecting an input voltage from the alternating current source and adjusting an connection of input terminals of the plurality of piezo-transforming devices based on the input voltage to obtain an input/output voltage ratio of the plurality of piezo-transforming devices inversely proportional to the input voltage.
Claims8
An A/D converter with adjustable internal connection, for converting an alternating current source to a direct current source, comprising:
- a rectifier driver module, adapted for rectifying an input voltage from said alternating current source and converting said input voltage to a corresponding driver voltage;
- a transformer module, including:
- a plurality of piezoelectric transformers, each of said plurality of piezoelectric transformers having two input terminals and two output terminals, said two output terminals of said plurality of piezoelectric transformers being connected in parallel to serve as two output terminals of said transformer module;
- and
- a control module, adapted for receiving said driver voltage, wherein said control module responsive to said input voltage and thereby adjust a connection between said input terminals of said plurality of piezoelectric transformers;
- and
- an output rectifier module, adapted for receiving an output voltage from saidtwo output terminals of said transformer module, and rectifying said output voltage from saidtwo output terminals to output said direct current source.
A method for operating an A/D converter with adjustable internal connection, for converting an alternating current source to a direct current source, comprising:
- a. providing a plurality of piezo-transforming devices;
- b. detecting an input voltage from said alternating current source;
- and
- c. adjusting an connection of input terminals of said plurality of piezo-transforming devices based on said input voltage to obtain an input/output voltage ratio of said plurality of piezo-transforming devices inversely proportional to said input voltage.
Dependencies are inferred from the claim text.