| 摘要 |
PURPOSE:To rapidly reset by detecting the nonconductive state of an AC power source, and producing a reset signal when becoming a conductive state after the prescribed time from when becoming the nonconductive state to reset control means. CONSTITUTION:If a malfunction occurs when an AC power source Va is turned ON, charge is stored in a smoothing condenser 1b and an inverter 1c is operated, the power source Va is turned OFF and again reset. If the power source Va is turned OFF during the prescribed time at this time, a trigger signal of a monostable multivibrator 17 is not input, and when the power source Va is reset, an output signal is converted from H level to L level. A monostable multivibrator 20 generates a reset signal E only during a period set by a resistor 18 and a capacitor 19 to reset an inverter controller 3. |
