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High-voltage power amplifier for dielectric applications

Posted: 02 Aug 2013 ?? ?Print Version ?Bookmark and Share

Keywords:Trek? amplifier? particle accelerators? plasma research? dielectric?

Trek Inc. is set to introduce its Model 20/20C-HS high-speed, high-voltage amplifier at the 2013 North American Particle Accelerator Conference. This 20kV four-quadrant DC-stable amplifier provides high speed of response with slew rate greater than 800V/us, output current to 60mA peak AC, and large signal bandwidth of DC to greater than 5.2kHz (1 per cent distortion).

Model 20/20C-HS features an all-solid-state design to deliver high slew rate, wide bandwidth and low-noise operation. This amplifier provides precise control of output voltages in the range of 0 to 20kV DC or peak AC with an output current range of 0 to 20mA DC or 60mA peak AC for 1ms. It is configured as a non-inverting amplifier with a fixed gain of 2000 V/V.

Applications of the high voltage amplifier include use in particle accelerators, plasma research and dielectric applications. Additional applications include AC or DC biasing, delta tan testing, dielectric barrier discharge, electro-coalescence, electro-optic modulation, electro-spinning, electrostatic deflection, fusion research, insulation breakdown testing, ion beam steering, material characterisation (ferroelectrics) and material poling.

The four-quadrant, active output stage sinks or sources current into reactive or resistive loads throughout the output voltage range. This is essential for achieving the accurate output response and high slew rates demanded by reactive loads. Model 20/20C-HS is protected against over-voltage and over-current conditions that may be generated by active loads or by output short circuits to ground.

Precision voltage and current monitors provide low-voltage representations of the high-voltage output and load current for monitoring purposes or for use as feedback signals in a closed loop system.

The remote high-voltage on/off feature provides a connection for a remote device to turn on/off the high-voltage output, making Model 20/20C-HS suitable for automated or computer-controlled systems.

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