Vibrator Circuit Use Ultrasonic Driver Circuit 2000W 28kHz/40kHz for Ultrasonic Transducer - China Ultrasonic Generator PCB, High Power Ultrasonic Generator PCB | Made-in-China.com
Amazon.com: YaeCCC 110V Ultrasonic Cleaner Power Driver Board with 2PCS 50W 40K Transducers : Industrial & Scientific