There is at least one piezoelectric element incorporated in the package or device and the piezoelectric element generates a sourceofvoltage when it is activated.
存在被引入包装或器具中的至少一个压电元件，且压电元件在被 激活时产生电压源。
2
Depending on the polarity of the voltagesource, one of the two diodes (d) in parallel is used to reduce noise while the other provides a discharge path.
根据电压源的极性，互相并联的两个二极管(D)中的一个用来减小噪声，而另一个二极管则提供放电通路。
3
That's not a problem, Kish says: transistors can be a good sourceof noise when operated at low voltage, and we can already fit billions of them on a chip.