A power amplifier is a laboratory instrument that can amplify AC/DC signals and generate maximum power output to drive a certain load under given distortion conditions.

The main technical parameters of a power amplifier include bandwidth, voltage, power, channel, voltage swing rate, impedance, gain, etc. When selecting a suitable power amplifier for a specific application, the characteristics of voltage, power, gain, bandwidth and waveform should be considered.

Power amplifiers can be used in conjunction with mainstream signal generators to achieve signal amplification, and are widely used in fields such as MEMS testing, ultrasonic testing, electromagnetic field driving, wireless energy transmission, and electronic experimental testing in universities.