model was designed with an increased power consumption (from 9W to 30W in some iterations) to improve the efficiency of the ultrasonic emission into the liquid.
: The ultrasonic generator should never be switched on without the piezo-emitter submerged in water , as running it "dry" can destroy the circuit.
: Features a standard step-down transformer followed by a diode bridge (e.g., VD2–VD5) for rectification, providing a pulsating voltage of approximately 9V to 12V. Key Components : Transistor model was designed with an increased power consumption
: Often an unmarked NPN transistor. Common successful replacements include the , , or .
: It features a more impact-resistant activator housing compared to earlier models. Repair and Safety Warnings Key Components : Transistor : Often an unmarked
Стир. машина РЕТОНА УСУ-0707. Блок питания
Repair enthusiasts and technical forums describe the internal circuitry of the Retona USU-0707 Repair and Safety Warnings Стир
Retona USU-0707 " is a compact ultrasonic washing device consisting of a power supply unit and a small piezoceramic radiator (activator). The device works by emitting ultrasonic waves into water to dislodge dirt from fabric fibers.