Power Amplifier

An important part used in vibration test systems for boosting vibration testing capabilities with reliable continuous operation

Power Amplifier
  • Power Amplifier
  • Power Amplifier
  • Power Amplifier

    • Power Amplifier

    An important part used in vibration test systems for boosting vibration testing capabilities with reliable continuous operation

    Power amplifiers have an important role in electrodynamic vibration testing, converting low-power signals into controlled high-energy outputs that drive shakers with precision. Each amplifier integrates power conversion circuits, intelligent control modules, protective systems to avoid overload or short circuits, and a responsive user interface for monitoring and adjustments. This combination supports long-duration vibration, shock, and fatigue testing with consistent output and stable performance. The design helps maintain system safety, reliable operation, and accurate simulation of dynamic loads across demanding test scenarios.

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    Technical Parameters
    Power range 0.1~600 kVA
    Output voltage 150 Vrms (rated), 180 Vrms (max.)
    Input impedance ≥10 kΩ
    Signal-to-noise ratio ≥65dB
    Harmonic distortion (resistive load) ＜ 1.0 % (typical value)
    Output current ≤ 4000A(200A step increase)
    Output current crest factor ≥ 3
    DC stability Output terminal zero drift≤ 50mv/8h
    Frequency response DC ~5000Hz ± 3dB
    Medium-frequency gain ≥ 80
    DC/ AC conversion efficiency ＞ 95%
    Load type Resistive, capacitive, inductive (optional)
    Parallel operation current unbalanceness ≤ 1%
    MTBF ≥ 3000(Hours)
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    Vibration testing involves applying controlled and measurable vibrational forces to a test specimen. The main purpose is to evaluate how these forces impact the structural integrity and performance of the product. This process helps identify hidden weaknesses or potential failure points that could emerge under daily use or extreme conditions.

    Vibration testing is essential across industries such as aerospace, automotive, and electronics, where components must reliably withstand environmental stress throughout their service life. By simulating real-world vibrations, these tests help ensure that:

    • Products remain robust and durable.
    • Safety and performance standards are consistently met or exceeded.
    • Costly recalls or repairs due to vibration-induced failures are avoided.

    The duration varies widely depending on the product, the type of test, and the standards being applied. Some tests can be completed in a few hours, while others require extended cycles over days or weeks to thoroughly simulate long-term use.