Power Amplifier

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Website: http://testchamber-en.com/14-5-power-amplifier.html

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.

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)