Control for piezo-electric vibrator

Abstract

Abstract PURPOSE:To simplify a power source device and to enable to manufacture the device at a low cost by a method wherein the impressed voltage is changed and the amount of displacement of the piezo-electric vibrator is controlled. CONSTITUTION:The voltage of a commercial power source 5a is changed by a variable transformer 6, the voltage is applied between the electrodes 2a and 2b of a piezo-electric vibrator 1 constituting the pump and the amount (d) of displacement of the piezo-electric vibrator 1 is controlled. The (d) is roughly proportioned to an impressed voltage (e). A fluid is sucked into by vibration of the vibrator 1 through a check valve 9a for suction, the fluid is discharged through a check valve 9b for discharge and the output of the vibrator can be changed by controlling the amount (d) of displacement. A variable resistor can be used instead of the transformer 6. According to this constitution, the power source device is simple and can be manufactured at a low cost.

Inventors

• 👤 Takeyuki Satou
• 👤 壮征 佐藤

Bibliographic Details