A phase-locked loop (PLL) is a nonlinear negative-feedback control system that
synchronizes its output in frequency as well as in phase with its input. PLLs are now widely …

Piezoelectric ultrasonic-assisted precision machining (PUAPM) technology is considered to
be an efficient and environmentally friendly machining strategy by virtue of cutting force …

The piezoelectric direct discharge (PDD) is a comparatively new type of atmospheric
pressure gaseous discharge for production of cold plasma. The generation of such …

A review on piezoelectric transformer structural modeling is presented. The operating
principle and the basic behavior of piezoelectric transformers as governed by the linear …

This paper presents a new resonance tracking method for the piezoelectric ultrasonic
transducer used in thermosonic wire bonding. Based on the relationships among the …

To realize the broadest potential of nonthermal atmospheric-pressure plasma (APP)
technology, there is a need to develop low-cost, compact devices that can be used for …

To date, piezoelectric transformers (PTs) have been extensively commercialised in step-up
applications, such as cold cathode fluorescent lamp backlighting for LCDs. As step-down PT …

This paper presents a novel control method for a current-fed full-bridge inverter actuating an
ultrasonic piezoelectric transducer (PT). In the conventional ultrasonic detection system, the …

For ultrasonic systems, the resonance frequency tracking (RFT) is the most critical step. The
rapid development in advanced material processing and microelectronics package has …

The input electrical impedance behaves as a capacitive when a piezoelectric transducer is
excited near its resonance frequency. In order to increase the energy transmission …