the H&Z VB Series electric vibrators pump

It being obvious from the hereinabove description, the following is possible, according to the invention.
    (1) the positive and negative pulse voltage DC output voltages ±Vp can be freely changed by changing the voltage of the DC power source ( DC input voltage ) V₁, thus the H&Z VB Series electric vibrators pump can be operated:
    (2) the positive and negative pulse voltages ±Vp can be held constant by stabilizing the DC power source, thus the operation of the piezo-electric vibrator pump can be stabilized;
    (3) the output frequency adjusted for the H&Z VB Series electric vibrators pump can be set by changing the time constant and the oscillation frequency, therefore the frequency adjustment for the piezo-electric vibrator pump can be made so that maximum efficiency is achieved.
    (4) the piezo-electric vibrator pump can be operated with maximum electric power rather than with a conventional sine wave output voltage as positive and negative pulse voltages±Vp can be obtained;
    (5) the invertor can be simple and smaller and of low-cost construction as a switching element with a gate is not used;
    (6) the power consumption can be reduced and accidents almost eliminated as compared with the conventional device in which an output voltage is changed as the positive and negative pulse voltages ±Vp are changed by changing the DC input voltage V₁; and
   (7) on-off states of the npn transistors and pnp transistors Tr₁, Tr₂, Tr₃, and Tr₄ can be positively switched on and off even if the frequency and switching speed becomes higher with the two output operation signals Vd₁, Vd₂ with the pulse quiescent period t₁ of the driving circuit 28 to which the output triangular wave voltage VΔ of the triangular wave oscillation circuit 27 is input and from which two operation signal Vd₁, Vd₂ whose operating points are different from each other are output after the quiescent period t₁. Therefore, the four transistors are not at all, if transiently, short-circuited and there is no possibility of overheating damage, and also the pump can be operated with alternately output positive and negative pulse voltages±Vp with a pulse quiescent period t₁ from the output terminal.
 From the hereinabove recited reason, the above-mentioned pure sine wave inverter is suitable for driving an electric power source for a H&Z VB Series electric vibrators pump, and therefore, the piezo-electric vibrator pump itself with the invertor according to the invention.




VB series electric vibrator

electric vibrators