Ultrasonic Transducer Driver Amplifiers

A piezo transducer behaves somewhat as a capacitor. As your driver transistor allows only a single polarity intermittent current to flow in the transducer (with or without D1) there is no oscillation as would be required for an ultrasonic output. The transducer's capacitance simply charges up to about the supply voltage. PGA460 Ultrasonic Signal Processor and Transducer Driver. Chip ultrasonic transducer driver and signal. Consisting of a low-noise amplifier followed by a.

Free zbrush tutorials for beginner. I am trying to make a ultrasonic signal generator and transistor amplifier for experimenting in sonochemistry. I am a machinist by trade trying to learn electronics. The transducer I am trying to power is a 40KH 70W unit. Here is the specifications, I used the signal generator on my Picoscope 2203. The signal was a 40KH square wave with a 50% duty cycle.

Being new to electronics I figured a regular audio amplifier would work. I used a Sony Xploid amplifier and got little results. The transducer vibrated enough to be barely audible. Thinking I needed more power I built a 500W amp from Elliot Sound Products(project 68.) The amp worked great on music but again it didn't work on the transducer. I have since found this site and have studied a lot about transistors and believe that I need to use IGBT transistors instead of bipolar transistors.

Could IGBT transistors be used to drive a circuit like this? Can I use a standard current mirror and differential amp for a pre-amp and use IGBT transistors for the power stage? Is a square wave the normal signal used on ultrasonic transducers and can I use a 555IC in astable mode to provide the signal or does the signal need to be a AC square wave? Thank you for taking the time to read this post and I appreciate any help that you can offer.