Piezo amplifier driver

All of them come with all cables and warranty. Training can be provided by Skype video or WeChat. Trek produces the best high voltage amplifiers with broad bandwidth and high reliability. While there is very long lead time 20 weeks , we can provide lease service to customers who are waiting for the delivery of their new amplifiers so they can start their project immediately. Cost of lease is related to the model and the period of the lease term. This option is only available to customers in the USA.

It also has a high-speed SPI digital front end for the input signal, which makes it great for incorporating into embedded electronic systems with minimal analog circuitry. This is one of the chips our company uses in haptics applications.

For example, we now have a commercial development kit for wearable haptic piezo actuators that provides a jump start for research and development with piezo-haptics. Texas Instruments offers a pair of chip based amplifiers, which are likewise marketed at piezo haptics. Since TI is interested in selling chips and not full piezo driver systems, they offer a lot of reference designs that can be used to create custom electronics boards.

User yurikleb on Instructables offers a tutorial to get the chip running with an Arduino. Since this unit packs so much power in a small package, it will be important to keep it cool during operation. Overheating can reduce the output current or even cause it to fail. At these power levels, the unit can operate Mide's piezos around 20 kHz. For users seeking a much higher frequency, the LT offers a reasonable power output albeit at a lower voltage in the megahertz frequency range.

When a small size is required, but a significant amount of power is needed, an amplifier module is typically the best option. I do a lot of work with synthetic jet actuators, which are often located on cars, trucks, or aircraft where space and weight are at a premium.

Modules will often require a DC power supply such as 12, 24, or 48 VDC, making them ideal for automotive and aerospace applications where DC voltage is readily available. Module style amplifiers can be rough in appearance consisting of exposed circuit boards, wires, and heat sinks. However, when the amplifiers are integrated into the final system, they are typically hidden under the hood of a car, for example like other electrical hardware.

PiezoDrive offers a wide selection of module based amplifiers including the PDmB. This unit is a nice balance of size and power. It offers a clean interface with clearly labeled inputs and outputs. Viking Industrial Products offers many piezo amplifier modules. The VPH model is capable of an output voltage range of Vpp at an output current of mA. With an average output power of 15W and a peak power output of W, these units offer a lot of power in a small form factor. A drawback of the amplifiers is that they operate on a bias voltage.

Instead of being centered on 0 V, the driving waveform has a bias of half the output voltage range. Care must be taken when using the units. Mide has found that if you try to connect a piezo while the amplifier is running, it could damage the piezo due to the bias voltage. Additionally, connecting to the units is a bit clumsy when compared to the PiezoDrive modules. When all hooked up, there are many wires coming from the amplifier that the user must solder to or connect with clips.

In many piezo driving applications such as speakers, haptics, and fans, the unit is driven at a constant or varying frequency so that it vibrates back and forth to create force, motion, or sound. However, there are also many applications where the piezo is controlled to a specific position, such as in a pneumatic valve application.

Such bi-state operations can be achieved with a standard DC power supply. When not powered, the piezo can relax to a known state.

Applying a DC voltage across the piezo will cause it to strain and change shape to the second state. This DC voltage can be a battery, voltage rail available in the system, or created by means of a voltage booster operational amplifier, DC to DC converter, or transformer.

An often overlooked way to drive a piezo is with mains wall power. Mains power can be useful in driving piezos in situations where the drive frequency and amplitude are not critical. Alternatively, the piezoelectric actuator can be designed to operate directly on mains power.

This is how we chose to design our piezo fan called PiezoFlo which you can see a video of here. Since the piezo fan will be integrated into existing systems that are probably mains powered such as a TV, computer, or LED lamp , powering the piezo fan with mains power reduces the electrical hardware requirements. When operating on mains power, it is not a bad idea to include hardware for current limiting or fusing since mains electricity can have surges and supply a significant amount of power.

The final method to drive a piezo is with a custom amplifier solution. These solutions typically will require significantly more electrical engineering knowledge than a commercial off-the-shelf COTS solution.

Custom solutions can be optimized for operating parameters, size, weight, power, and integration. The output voltage range can be unipolar, bipolar, or asymmetric from 50V to V.

The amplifier will deliver up to 4 Amps peak with a sinusoidal output, or up to 8 Amps peak for pulse applications. The PD32 is a high-bandwidth, low-noise amplifier for driving up to 32 piezoelectric actuators. The PD32 works seamlessly with common multi-channel DAC cards and provides exceptional ease of use and compatibility with programming tools such as LabView and Simulink.

Digital servo for advanced control algorithms 25 kHz control bandwidth For capacitive and piezo-restive strain gauge feedback sensors Optional high resolution analog control inputs and outputs Interfaces: Ethernet, USB, and RS Digital inputs and outputs.

Motion Controller for Fast Steering Mirrors. High-voltage amplifier up to 6kW peak power Linear amps and switched amps with energy recovery Output voltage 0 to V and bipolar Optional position servo-motion controller module Optional computer interface and display module Differential output. Controllers for Bender Piezo Actuators. Open-loop and closed-loop versions Most cost-efficient digital piezo motion controller Servo tuning and parameter setting by software Digital algorithms improve linearity Analog control input for target values.

Open-loop driver PCB-mount possible mA peak current for dynamic piezo operation Integrated high voltage power supply, requires one 24V source to operate Low noise, high stability Full overcurrent, short-circuit and temperature protection.

Cost effective piezo driver Up to 40 channel custom configurable versions Small size Low noise, high stability Easy-to-use Full overcurrent, short-circuit and temperature protection.