The ultrasonic signal generator consists of an ultrasonic power amplifier module which can convert 50/60Hz ac power into super audio power for the transducer and a control module with "system protection monitoring" and "automatic tuning" functions. The control module can cut off the ultrasonic energy when the ultrasonic welding work fails so as to provide high safety and reliability for the generator and even the whole welding equipment.   Time and energy welding mode   Automatic frequency control; Automatic data storage Automatic display of machine malfunction Common error reminding  System protection monitoring