ELECTRONIC DRIVE SYSTEM FOR A DROPLET SPRAY GENERATION DEVICE

摘要

An electronic drive system for a droplet spray generation device (11) of the type having a droplet generator including a perforate membrane driven by a piezoelectric transducer, the electronic drive system comprising: a programmable micro-controller (20) providing a power supply (21) for converting, in use, a battery (12) supply voltage to power the device, a power amplifier (23) connected to receive electric power from the power supply (21) and supply a drive signal to the piezoelectric generator at regular intervals; a mono-stable switch connected to a timer to generate the drive signal as a plurality of pulses of fixed interval over a predetermined period when the switch is operated.