Piezoelectric Transformers

Rosen-Type Piezoelectric Transformers Based on 0.5Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3 Ceramic and Doped with Sb2O3

“…The function generator generates an input signal, which is supplied to the V in electrode of the piezoelectric transformer through the amplifier to increase the input signal. The input voltage induces vibrations in the piezoelectric transformer [13]. When an AC voltage is supplied to the ceramic's halfway point, it initiates continuous longitudinal oscillations at the same frequency as the provided voltage, which demonstrates the inverse piezoelectric effect.…”

“…The amplified voltage output from the piezoelectric transformer can be quantified with the use of an oscilloscope. In this way, we can ascertain the step-up amplification ratio; it is related to the geometry of the piezoelectric transformer and its piezoelectric properties [13]. As seen in Figure 3a, the capacitance and dielectric constant (εr) were measured with an impedance analyzer (Agilent 4294 A) at 1 kHz according to Sb2O3 dopant (0.0, 0.05, 0.1, Figure 2 presents a schematic diagram of a features arrangement for the piezoelectric transformer.…”

“…The charge generated by the piezoelectric transformer's piezoelectric transfer effect is directly utilized by the collecting output electrodes. These AC voltages are amplified as well by driving a piezoelectric transformer using mechanical vibration [13][14][15]. Piezoelectric transformers have been extensively studied because of their high-power densities, small sizes, low weights, and high efficiency.…”

“…Moreover, the voltage of the natural vibration frequency on the secondary side vibrates in a certain direction; this vibration provides the converted secondary voltage at the output. When the secondary voltage is provided, it is affected by the piezoelectric characteristics, The electromechanical coupling factors(k 31 , and k 33 ), mechanical quality factor (Q m ), elastic compliance constants (s E 33 , s E 11 , and s D 33 ), piezoelectric transformer output length (L out ), and thickness(t) can be arranged to make the output formula for this piezoelectric transformer as follows in Equation (1) [13].…”

“…Piezoelectric transformers can be supplied for cell phone battery chargers, fluorescent lamp lighting, and LCD backlight driving circuits. Their application field is increasing [4,13,22,23].…”