piezo electric transformer
Answers
Answer:
The VT3 model shown below is custom made to drive piezo stacks and actuators with up to 200V, using waveforms of any kind.
This amplifier can typically drive a 40uF load with 200V square wave at 120Hz.
Rise/fall time is 400uS for a 200V step and 40uF load (2 V/uS).
Rise/fall times will slower with higher capacitance and faster with lower capacitance.
The max. output charging current is 20A.
Full power bandwidth to 20KHz
Output is protected for short circuits, so if the stack shorts out the amplifier just shuts down.
Amplifier also protected against high temperature.
Monitor outputs for output current and output voltage on the front panel.
Answer:
The piezoelectric transformer is made from a ceramic material with a high dielectric constant. It is composed of equal sized elements with different polarization. Element A has a standing wave at f/2. Element B is coupled mechanically and it has a standing wave at nX f/2.
The mechanical energy is stored in the two elements. Boost up or down conversion is possible at very high efficiency levels.