In the circuit, the 5K multiturn trimpot (RP1) can be used to set the oscillator frequency to 113 kHz (±5 kHz) (TP1). Even though the ultrasonic mist maker device is configured to run on a single ...

There have been many different ideas presented for increasing the acoustic output of a piezo buzzer or ultrasonic transducer ... The simplest piezo drive circuit consists of a transducer and a ...

these kits have the added advantage of including waterproof ultrasonic transducers, perfect for an outdoor weather station, and all the required circuitry to drive them. Some circuit surgery is ...