| 摘要 |
The present invention relates to a voltage dividing circuit comprising capacitors or resistors. In the case of a voltage dividing circuit comprising capacitors, the capacitors are connected at one end to an output terminal and at the other end connected alternately to two power sources through changeover switches. The switches are selectively operated so that the capacitors divide the source voltages into fractions of the voltage. The average of the fractions of voltage is used an output voltage. The averaging of the fractions of voltage cancels out the characteristic difference among the capacitors. The fractions of voltage are changed by varying the time during which each capacitor is connected to either power source. Similarly, in the case of a voltage dividing circuit comprising resistors, the resistors divide a voltage into fractions. The average of the fractions of voltage is used as an output voltage. The voltage dividing circuit according to the present invention may employ the method used in the known voltage dividing circuits which comprise capacitors or resistors. In this case, the circuit can divide a voltage into smaller fractions of voltage than the known voltage dividing circuits. In other words, the circuit of the present invention can enhance the resolution of the analog output signal.
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