| 摘要 |
PURPOSE:To realize the circuit constitution operated normally by suppressing a signal inputted to a logical circuit at a low power supply voltage just after application of circuit power supply and resetting automatically the inputted signal when the circuit power supply voltage is increased sufficiently. CONSTITUTION:A drain and a gate of an enhancement insulation gate FET(E- MOSFET)1 are connected in common and the connecting point is connected to a circuit power supply 5, and the source is connected to a gate and drain common connecting point A of an E-MOSFET2. Further, the source is connected to the drain of the 3rd E-MOSFET3 and one input B of an NAND circuit 4, and the gate is connected to the power supply 5. Moreover, the source of the FET 3 is connected to the circuit power supply 6. The input signal to a gate circuit of the FET3 is controlled by detecting a potential difference between the power supplies 5 and 6. |
