: The ultrasonic generator should never be switched on without the piezo-emitter submerged in water , as running it "dry" can destroy the circuit.
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. : The ultrasonic generator should never be switched
: The device typically utilizes a classical inductive three-point oscillator (inductive Hartley oscillator) to drive the piezoelectric element. : The device typically utilizes a classical inductive
Repair enthusiasts and technical forums describe the internal circuitry of the Retona USU-0707 : The ultrasonic generator should never be switched
: It is dangerous to put hands in the water while an ultrasonic device is active, as it may damage small blood vessels (capillaries).
: If the power indicator is on but no ultrasonic waves are visible, it usually points to a burned-out transducer or a generator fault .