Velleman Trasduttore piezo 1,5 v ca 2,048 kHz 88 dB tipo pcb

The piezoelectric ceramic buzzer has a simple structure in which a ceramic piezo-element is glued to a vibration plate. The piezoceramic element expands or shrinks diametrically when an alternating voltage is applied. This characteristic is used to bend the vibration plate, which generates sound. The acoustic generating method can be subdivided roughly into the self-drive oscillation method and the external drive oscillation method. The former yields the lowest impedance on the acoustic generator and produces sound through the oscillator circuit's positive feedback. This allows the creation of sound pressure using a simple circuit. The external drive oscillation method uses a fixed frequency and produces sound through the oscillator. Consumo di energia 10 mA (max) Impedenza della bobina 120 Ohm Livello di pressione sonora 88dB Resistenza della bobina 42 +/- 6 Ohm Connessione Printmontage Tensione nominale 1.5 VAC Frequenza di risonanza 2.048 ± 0.5 kHz Peso del tessuto 2 g Colore ...