Midé Technology’s QPA202 is a single-channel, linear power amplifier specifically designed for driving Midé’s line of Quickpack / PowerAct transducers and other high-voltage piezoelectric capacitive transducers. The QPA202 is an improved version of the QPA200, with an extended bandwidth (8kHz) and output current increased to 2 Amperes (2A). It offers a fixed or adjustable DC gain up to 50 V/V with a bipolar output range from +200V to –200V.
Piezos need to be driven by an amplifier to be effectively used in a myriad of ways. They can be used in laser mirror alignment, or to reduce vibrations in a structure. They can be used to acoustically cancel noise, or to replace solenoid valves in controlling the flow of fluids or gases. Piezos can be driven to move air, or to stir fluids for medical or manufacturing processes. The recently released QPA202 QuickPack Piezo Power Amplifier is able to drive these piezoelectric dependant technologies even further.
Midé Technology’s QPA202 is a single-channel, linear power amplifier specifically designed for driving Midé’s line of Quickpack / PowerAct transducers and other high-voltage piezoelectric capacitive transducers. The QPA202 is an improved version of the QPA200, with an extended bandwidth (8kHz) and output current increased to 2 Amperes (2A). It offers a fixed or adjustable DC gain up to 50 V/V with a bipolar output range from +200V to –200V. An analog output jack is provided on the face of the amplifier for precisely monitoring scaled output voltage.
The QPA202 is equipped with thermal overload protection and output short-circuit protection. Midé’s President, David Gilbert stated that “its low-cost, simple functions and high performance make the QPA202 an excellent choice for a wide range of piezoelectric transducer applications.” The amplifier is packaged in a compact aluminum enclosure measuring 12 x 9 x 3.5 inches with a total weight of 5.2 kg (11.4 lbs). It is designed for benchtop or rack-mount operation. The Piezo Power Amplifier is available in two voltages; the QPA202-U (115V, 60Hz AC), and the QPA202-I (230V, 50Hz AC).
The QPA202 Piezo Power Amplifier represents a sample of the technologies developed by Mide’s capable team of electronics engineers. Since 1989, Mide engineers have been performing advanced research and development for countless applications, including: distributed wireless brake force sensors for freight trains; Volture range of piezoelectric energy harvester devices for self-powered sensors; resonant structural health monitoring; and efficient piezo valves for space and medical applications. Midé also develops and manufactures a huge range of patented QuickPack packaged piezoelectric transducers, and PowerAct conformable packaged piezoelectric transducers – the QPA202 was designed to specifically complement these and other high-voltage piezoelectric capacitive transducers.
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