| 摘要 |
PURPOSE:To enlarge the width of change of an output voltage by providing four MOS transistors and connecting a gate input of the third and fourth MOS transistors to a common connecting end of the first and third MOS transistors. CONSTITUTION:The titled circuit consists of P channel type MOS transistors Q13, Q14 that set data lines L29, L21 as a gate input and N channel type MOS transistors Q15, Q16 connected between drains of transistors Q13, Q14 and the earth. A gate input of the transistors Q15, Q16 is connected to a common connecting end of the transistors Q13, Q15 and the transistors Q13, Q14 are connected to a power source terminal. In such a voltage sensing circuit, by using depletion type MOS transistors for the transistors Q13, Q14 minute potential difference generated between the L29, L21 can be amplified and a largely oscillating logical output can be taken out. |
