LOW VOLTAGE DRIVING CIRCUIT FOR TRACKING MAXIMUM POWER POINT AND LOW VOLTAGE DRIVING DEVICE INCLUDING THE SAME
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United States of America Patent
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Issued Date -
May 11, 2017
app pub date -
Apr 1, 2016
filing date -
Nov 9, 2015
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Abstract
An electronic circuit includes an electricity generating element circuit outputting an input voltage and an input current according to a temperature of an electricity generating element, a current detecting circuit detecting the input current, a power tracking control circuit receiving the detected input current, detecting the input voltage, and outputting a control signal, a switch selecting circuit selectively outputting switch selection signals in response to the control signal, a switch circuit adjusting a resistance value of a resistor according to the switch selection signals that are selectively output from the switch selecting circuit, the resistor being connected to an output terminal of the electricity generating element circuit, and a transformer transforming the input voltage to output an increased voltage, wherein the power tracking control circuit adjusts the control signal such that power according to the input current and the input voltage is maintained in a reference ratio.
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