| 摘要 |
PURPOSE: A pulse voltage automatic compensation device for vacuum fluorescence display element is provided to maintain input voltage value of vacuum fluorescence display element in constant range by adding an initial value to decreased value due to disturbances. CONSTITUTION: An input unit(1) samples an input voltage according to constant time and maintains the value, and transforms the generated value into digital value. A control unit(2) calculates deviation of the data received through the input unit(1) and the input voltage and outputs the voltage which exceeds the initial input voltage, and controls the input unit(1) and an output unit(3). The output unit(3) consists of an LED(light emitting diode) which connects the data output from the control unit(2) to a power source supply unit and displays the data output this time.
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