| 摘要 |
<p>PURPOSE:To stabilize a circuit voltage by dividing a power supply voltage, and providing a split resistance for applying a split voltage to a comparator, on a circuit side so as to apply a feedback voltage. CONSTITUTION:A circuit voltage which has passed through a diode 12 or a transistor 13 from a battery 11 is applied to a data terminal equipment through a smoothing capacitor 20. In this regard, this terminal equipment is constituted of a storage device 21, an operation control means 22, a display means 23 and an indicator 25, and an input device 24. This circuit voltage is compared with a reference voltage VREF of a reference voltage device 18 by a comparator 14, and the circuit voltage is satisfied by controlling the transistor 13. In such a case, the circuit to be compared is a voltage which is obtained through split resistance 15-16 from the voltage which has passed through the diode 12 or the transistor 13. In such a way, an output voltage is stabilized without being switched instantaneously, therefore, a variance, etc. of a display variable density can be eliminated.</p> |
