| 摘要 |
Voltage dividing circuits which are comprised of capacitors or resistors. …<??>In the case of a voltage dividing circuit comprised of capacitors (Fig. 5), the capacitors (C1, C2) are connected each at one end to an output terminal (Vout) and at the other end connected alternately to two power sources (V1, V2) through changeover switches (S1, S2). The switches (S1, S2) are selectively operated so that the capacitors (C1, C2) divide a voltage into fractions of that voltage. The average of the fractions of voltage is taken out as an output voltage (Vout). The averaging of the fractions of voltage cancels out the characteristic difference among the capacitors (C1, C2). The fractions of voltage are changed by varying the time during which each capacitor (C1, C2) is connected to either power source (V1, V2). …<??>In the case of a voltage dividing circuit comprised of resistors (Fig. 12), the resistors divide a voltage into fractions. The average of the fractions of voltage is taken out as an output voltage (Vout). The voltage dividing circuit may employ a method used in 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 can enhance the resolution of the analog output signal. |
