Velleman Trasduttore piezo 30 v ca 0,5-20 Hz tipo di cavo 75 dB

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 1.5 mA Livello di pressione sonora 75 dB Connessione Drahtanschluss Tensione nominale 15 VAC Frequenza di risonanza 0.5-20 ± 0.5 kHz Peso del tessuto 3 g Colore dell'alloggiamento schwarz Tensione di esercizio 30 VAC Dimensioni ...