PAC2000B Power Amplifier User Manual
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4. Functions and Features
4.1 Basic Principle
Schematic Block Diagram of PAC2000B
PAC2000B current power amplifier is a kind of power amplifier with linear current output,
targeting at the CT characteristic of power system, of the strengths of high accuracy, high
current and quick response, which consists of below parts mainly:
1) High-speed differential input circuit for amplifier;
2) High order low pass filter with special transfer function, quick response and no
over-shoot;
3) High performance current power amplifier module;
4) High performance test circuit of output current of true RMS value;
5) Temperature protection circuit, which can shut off the amplifier when its temperature
is too high and will let it resume to work when it is cooled down to a reasonable degree.
6) Temperature-controlled fan, which means that when the temperature of the
amplifier is quite low, the fan will work at low speed for it’s better for prolonging the service
life and reducing the operation noise of the fan.