| 摘要 |
A control circuit for an automatic shading welding helmet prevents a LCD driving from being delayed owing to a reset delay of a micro computer. The control circuit for the automatic shading welding helmet having a welding detecting part, a solar cell, a micro computer, a LCD driving part, a LCD driving power, a LCD part, a high voltage supplying part, and a power supply includes a welding detecting signal processing part for outputting a welding detecting signal when the welding detecting signal is inputted from the welding detecting part and allowing the power to be supplied to the micro computer through the power supply; and a temporary driving controller for allowing a temporary power to be directly supplied to the LCD driving part before a reset of the micro computer and allowing the power of the power supply to be supplied to the LCD driving part. |
